Chapter 9 Life Functions Common to living Things

Life Functions

•  Living Organisms must carry these out to survive. –  Transportation = movement –  Nutrition = food –  Growth and repair = healing, growing –  Reproduction = Making new cells or babies –  Regulation = responding to changes –  Metabolism = Breathing, digestion eliminating

waste –  Synthesis = When your cells make new

substances

Dormancy, Hibernation, and Torpor

•  Dormancy - Only happens in plants, they take the winter off

•  Hibernation - animals slow their heart rate and breathing down to avoid winter

•  Torpor - When animals become inactive in the hottest driest weather

Photosynthesis •  Only in plants •  Happens in the chloroplast •  Takes in Carbon Dioxide, sunlight and

water, and produces Oxygen and glucose

•  Requires sunlight

Cellular Respiration

•  Happens in both plants and animals •  In plants occurs at night •  Takes in Oxygen and Food and

produces energy, Carbon dioxide and water.

O2 + glucose ENERGY + CO2 + H2O

Organ Systems •  Nervous System

– Communicates with entire body

– Regulates your life functions

Urinary System

•  Kidneys filter your blood that has cellular waste in it, and transports it to the bladder.

Digestive System

•  Breaks Down and Digests Food

•  Gets rid of solid waste

Digestive System Parts

•  Esophagus - Pushes food to stomach •  Stomach - Food is mixed, Enzymes dissolve

food to liquid form •  Small Intestine - Neutralizes stomach acid,

This absorbs most of the food •  Large Intestine - Absorbs Vitamins, Minerals

and Water •  Anus - Discharges Undigested food in the

form of feces.

Circulatory System

•  Blood transports – Food – Oxygen – Carbon Dioxide – Waste

Circulatory System parts

•  Heart - pumps blood throughout the body •  3 Different Blood vessels •  1. Arteries - Carries oxygen rich blood from

the heart to rest of the body (Red) •  2. Veins - Carries oxygen low blood from the

body to the heart (Blue) •  3. Capillaries - Very tiny tubes that connect

veins and arteries (1 cell thick walls)

Digestive System and Circulatory System working

together •  The Digestive system breaks down food into

small enough pieces to be carried by the blood

•  The circulatory system transports the food around your body

•  Nutrients are fed to your cells •  Waste passes out of your cells and into your

blood •  Your blood helps dispose of the waste that

would be harmful to your body

Monitoring Life Functions

•  Doctors Need to know if your healthy •  They have designed machines to help

diagnose you

X-rays and CAT scans

•  These both take pictures of the inside of your body

•  X-Rays are for bones •  CAT scans are for brains

EKG

•  Electro Cardio Gram •  The heart monitor

EEG

•  Electro Encephalo Gram •  Studies the brain

Endoscope

•  A camera on the end of a long flexible tube that allows you to see inside your esophagus.

Blood Pressure

•  Sphygmomanometer (Blood Pressure Cuff) •  Measures your pressure •  Systolic and Diastolic readings •  When your heart pumps it’s the systolic

reading (The number is higher) •  When your heart relaxes it’s the diastolic

reading (The number is low) •  Its Reported in the form of 120 over 80

Assignment

•  Chapter 9 booklet 2 •  Keywords