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Page 1: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Frog Dissection

Page 2: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,
Page 3: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Scientists believe

other vertebrates

evolved from BONY

LOBE-FINNED fish

Page 4: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Scientific American; Dec 2005; Vol 293; p100-107

Page 5: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

TIK-TAALIK Intermediate between fish and early tetrapods

• Fins have basic wrist bones and simple fingers

• Earliest fish with a neck

• Discovered by Neil Shubin and Ted Daeschler in 2004

http://evolution.berkeley.edu/evolibrary/images/news/tiktaalik_reconstruction.jpg

Page 6: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

AMPHIBIAN

CHARACTERISTICS

Moist, thin skin without scales

Aquatic larva changes to terrestrial adult

Feet without claws

Respiration with gills, lungs, skin, mouth

Closed 2 loop circulation

Ectothermic (cold blooded)

Eggs without shells or multicellular membranes

Page 7: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

http://users.erols.com/jkimball.ma.ultranet/BiologyPages/V/Vertebrates.html

http://www.spekulantenguide.de/gifs/salamanderw.jpg

Page 8: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

FROG LATIN meaning

KINGDOM _____________

PHYLUM ____________________________

SUBPHYLUM ___________________________

CLASS _______________________________

ORDER _____________________________

ANIMALIA

CHORDATA

VERTEBRATA “backbone”

AMPHIBIA “double life”

ANURA “without a tail”

Page 9: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Thin, moist skin – no scales

Mucous glands make it “slimy”

Camouflage- for protection

Some have poison glands

http://www-binf.bio.uu.nl/dutilh/hall/kikkers.html

Page 10: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

BREATHING THROUGH SKIN is called

CUTANEOUS RESPIRATION

http://www.tvdsb.on.ca/westmin/science/snc2g1/frogresp.htm

Page 11: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

ECTOTHERMIC

“cold blooded”

Body temperature is dependent on

surrounding environment

http://www.vanscyoc.net/randy/garden/wildlife/image4.htm

Page 12: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

HIBERNATION/ ESTIVATION

Images from:

http://www.enc.org/Classroom_Calendar/CC_Units/Unit_Images/185.jpg

http://www.reptilis.org/pyxi/image5.htm

FAT stored in FAT BODIES provides energy

Page 13: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Nictitating membrane (3rd eyelid) “swim goggles”

Image by: Riedell/VanderWal©2006

Nostrils = external nares

Page 14: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

All tetrapods (amphibians, reptiles, birds, and mammals) have a middle ear with a tympanic membrane (= eardrum).

Image by: Riedell/VanderWal©2006

Page 15: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

The major difference in the middle ear:

– Amphibians, reptiles, birds have a single ear bone (= columella)

– Mammals have three middle-ear bones

http://www.earthlife.net/mammals/images/anatomy/m-ear.gif

Page 16: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

NO CLAWS

image from: http://www.spc.cc.tx.us/biology/jmckinney/Studyimages/frog/frogdissectlist.html

Page 17: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

EXIT OPENINGS DIGESTIVE WASTE (feces) = _________________ EXCRETORY & REPRODUCTIVE EXIT = _____________________________ (Urine & eggs OR Urine & sperm)

ANUS

UROGENITAL PORE

Page 18: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

EXIT OPENINGS

OPENING SHARED BY

EXCRETORY,

REPRODUCTIVE,

& DIGESTIVE =

________

VENT

Image by: Riedell/VanderWal©2006

Page 19: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

What sex is it?

Images from: http://sps.k12.ar.us/massengale/frog_dissection.htm

Page 20: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Image by: Riedell/VanderWal©2006

Page 21: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

AMPLEXUS “firm embrace”

Sperm and egg released @ same time and place

Increases chances of external fertilization Image from: http://portal.isis.org/partners/AARK/YOTF%20Campaign%20Pack%20images/Forms/DispForm.aspx?ID=336

Page 22: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

TONGUE attached at front not back like yours!

Imagse from:

http://www.animationlibrary.com

http://www.geocities.com/animalbio/biology.htm

Page 23: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Image by: Riedell/VanderWal©2006

PHARYNX Muscular Back of throat Pulls food into digestive system

Page 24: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

EUSTACHIAN TUBES Connect ears to back of throat

Image by: Riedell/VanderWal©2006

Page 25: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Image by: Riedell/VanderWal©2006

GLOTTIS Opening to respiratory system

GULLET Opening to digestive system

Page 26: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

MAXILLARY & VOMERINE TEETH

Image by: Riedell/VanderWal©2006

Page 27: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

INTERNAL NARES

Image by: Riedell/VanderWal©2006

http://whatdidyoubringme.homestead.com/files/Tshirts/Herp/amphibian/images_lg/Frog251.jpg

Allows frog to breathe with mouth closed!

Page 28: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Image from http://sps.k12.ar.us/massengale/frog_dissection.htm

Cut through skin first Then abdominal muscle Watch for squirting!

Page 29: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Image by Riedell/VanderWal©2006

LOTS OF BLOOD VESSELS for gas exchange CUTANEOUS RESPIRATION

Page 30: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Image by Riedell/VanderWal©2006

OVARY- Make eggs If yours looks like this . . . trade for a new frog

Page 31: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

FAT BODIES

Store fat for

energy during:

Hibernation

Estivation

Breeding

Image by Riedell/VanderWal©2006

Page 32: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

LIVER • Make bile to break down fats

• Store glycogen • Store vitamins • Process toxins (including nitrogen waste for kidneys)

Image by Riedell/VanderWal©2006

Page 33: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

STOMACH

Add acid

Start digestion

Grind/mash

food

Image by Riedell/VanderWal©2006

Page 34: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

GALL BLADDER

Storage sac under liver

Stores bile made by liver Used in small

intestine Image by Riedell/VanderWal©2006

Page 35: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

PANCREAS

http://curry.edschool.virginia.edu/go/frog/organs/home.html

Page 36: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Pancreas (enlarged)

Page 37: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

PANCREAS:

Makes TRYPSIN, INSULIN, GLUCAGON

TRYPSIN- breaks down proteins

INSULIN- tells cells to store glucose from

bloodstream as glycogen

GLUCAGON- tells cells to release stored

glucose to blood stream

Page 38: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Mesentery holds intestines together

Image by Riedell/VanderWal©2006

Page 39: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

SMALL INTESTINE

LARGE INTESTINE

Split up intestine

functions

Image by Riedell/VanderWal©2006

INTESTINE

Page 40: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

• Bile/trypsin added

• Finish digesting

• Absorb nutrients

VILLI-increase surface area for

more absorption

Image by Riedell/VanderWal©2006

SMALL INTESTINE

http://neuromedia.neurobio.ucla.edu/campbell/epithelium/wp_images/107%20villi.jpg

Page 41: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Removes water

from feces

Collects/concentrates

digestive waste

Image by Riedell/VanderWal©2006

LARGE INTESTINE

Page 42: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

DUODENUM-

Add bile/trypsin

Finish digestion

ILEUM-

Finish digestion

Absorb nutrients

Image by Riedell/VanderWal©2006

SMALL INTESTINE

Page 43: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

CLOACA Shared collecting space for

DIGESTIVE EXCRETORY REPRODUCTIVE SYSTEMS Image by Riedell/VanderWal©2006

Page 44: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

STOMACH

What’s for lunch? Cut open your stomach

Image by Riedell/VanderWal©2006

Page 45: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

STOMACH

RUGAE- Rough folds inside stomach

allow expansion

help to break down food

Image by Riedell/VanderWal©2006

Page 46: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

PYLORIC SPHINCTER CONTROLS passage of food from stomach into duodenum (intestine)

http://www.health.auckland.ac.nz/departments/neurophysiology/public/teaching/alimentary_lectures/datashow/1-overview/gfx/pylorus.jpg

Page 47: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

BLOOD CELL FACTORY

Makes, stores,

processes

worn out

red blood cells

Image by Riedell/VanderWal©2006

SPLEEN

Page 48: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

10 Body Systems : ___________________

Get rid of nitrogen waste made by cells

Nitrogen waste has different chemical forms:

___________ __________ _____________ MOST TOXIC made from LEAST TOXIC

ammonia by needs the least liver water to dilute

FISH HUMANS BIRDS, REPTILES

AMPHIBIANS

EXCRETORY

AMMONIA UREA URIC ACID

Page 49: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

ALL WASTE is NOT THE SAME! DIGESTIVE waste-

left over from undigested food travels through digestive system

leaves through digestive system as feces

EXCRETORY waste- (Also called NITROGEN WASTE) made by cells from break down of proteins

travels through blood stream

leaves through excretory system as

ammonia, urea, or uric acid

Page 50: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Diagram by: Riedell

Page 51: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Image by Riedell/VanderWal©2006

KIDNEYS- •Remove nitrogen waste from blood and dilute it with water to make urine; •Osmoregulation •Adult frogs excrete as UREA TO CONSERVE WATER

Page 52: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

URINARY BLADDER

Image by Riedell/VanderWal©2006

STORES URINE MADE BY KIDNEYS LARVAE (Tadpoles) Excrete AMMONIA like fish Adult frogs excrete UREA to conserve water

Page 53: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

CLOACA Shared collecting space for

DIGESTIVE EXCRETORY REPRODUCTIVE SYSTEMS Image by Riedell/VanderWal©2006

Page 54: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

OVARIES Make eggs

Image by Riedell/VanderWal©2006

Page 55: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Image from: http://step.sdsc.edu/projects95/Frog.Dissection/index.html

Carry eggs to cloaca

Add jelly coating

Page 56: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

OVARY without eggs

Image by Riedell/VanderWal©2006

Page 57: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

TESTES-makes sperm VAS DEFERENS-tubules that carry sperm to cloaca

Image by Riedell/VanderWal©2006

Page 58: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

AMPLEXUS “firm embrace”

Sperm and egg released @ same time and place

Increases chances of external fertilization Image from: http://portal.isis.org/partners/AARK/YOTF%20Campaign%20Pack%20images/Forms/DispForm.aspx?ID=336

Page 59: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

INDIRECT DEVELOPMENT

Grow legs; Lose tail 2 chambers 3 chambers 1 loop 2 loops Breathe w/ gills lungs & skin Excrete ammonia excrete urea (gills & kidneys) (kidneys)

http://saczoo.com/3_kids/images

Page 60: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

ENDOCRINE SYSTEM

THYROID GLAND makes THYROXIN to control heart rate, metabolism, and METAMORPHOSIS

http://saczoo.com/3_kids/images

Page 61: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Ways tadpoles are like fish

Have a LATERAL LINE Breathe with gills Excrete nitrogen waste as AMMONIA (with gills & kidneys)

Have a 2 chamber heart Have a 1 loop circulatory system

http://upload.wikimedia.org/wikipedia/en/thumb/c/c7/L.littlejohni_tadpole.jpg/800px-L.littlejohni_tadpole.jpg

Page 62: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Pericardial membrane around heart

Mesentery holds intestines together

image from: http://www.spc.cc.tx.us/biology/jmckinney/Studyimages/frog/frogdissectlist.html

Page 63: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

LUNGS: GAS EXCHANGE

Image by Riedell/VanderWal©2006

http://www.stclement.pvt.k12.il.us/studentWeb/science98/GarrittPatM/alveoli.gif

Page 64: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

BREATHING WITH LUNGS is called PULMONARY RESPIRATION

Frogs PUSH AIR INTO LUNGS = POSITIVE PRESSURE

http://www.tvdsb.on.ca/westmin/science/snc2g1/frogresp.htm

Page 65: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Larvae breathe with GILLS

http://upload.wikimedia.org/wikipedia/en/thumb/c/c7/L.littlejohni_tadpole.jpg/800px-L.littlejohni_tadpole.jpg

Page 66: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

HEART 3 chambers 2 loops

Image by Riedell/VanderWal©2006

Page 67: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

HEART

3 chambered heart

Right atrium

Left atrium

Ventricle

Image from: http://www.digitalfrog.com/resources/froggallery.html

Page 68: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Images from: http://www2.volstate.edu/msd/BIO/1020/Lab7ChordateII.htm

ADULT FROG:

3 chamber heart

2 loop system

TADPOLES & FISH:

2 chambered heart

1 loop system

Page 69: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

MOST vertebrates have nuclei

in their RBC’s

RBCs’ image from:

http://www.fish-news.com/RG4001.jpg

Human RBC image from:

http://www.nigms.nih.gov/moleculestomeds/images/bloodcells.gif

MAMMALS DON’T

Page 70: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Sinus

venosus

Atrium

Ventricle Conus

arteriosus

BODY

organs

GILLS

FISH CIRCULATION

Page 71: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Sinus

venosus

RIGHT

Atrium

Ventricle Conus

arteriosus

Lungs

Body

organs

LEFT

Atrium

FROG CIRCULATION

Page 72: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

Sinus

venosus

RIGHT

Atrium

Ventricle Conus

arteriosus

Lungs

Body

organs

LEFT

Atrium

FROG CIRCULATION

Page 73: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

SYSTEMIC CIRCULATION

Kidneys = renal

Heart = coronary

Liver = hepatic

LUNGS = Pulmonary

Page 74: Frog Dissection - Mr. T Science · AMPHIBIAN CHARACTERISTICS Moist, thin skin without scales Aquatic larva changes to terrestrial adult Feet without claws Respiration with gills,

BRAIN

http://www.manheimcentral.org/~tw005690/Frog/frog.htm