AIM:AIM:What are the functions of the What are the functions of the

CIRCULATORY SYSTEM?CIRCULATORY SYSTEM?

Do NowDo Now:: How does glucose (which is absorbed by How does glucose (which is absorbed by the small intestine from food eaten) get the small intestine from food eaten) get to your muscles to be used for energy?to your muscles to be used for energy?

What are the 5 functions of the What are the 5 functions of the circulatory systemcirculatory system??1.1. Transport materials to the cells Transport materials to the cells

(nutrients, O(nutrients, O22))

2.2. Carry wastes away from cells Carry wastes away from cells (CO(CO2,2,, nitrogen, urea), nitrogen, urea)

3.3. Carry hormones to cellsCarry hormones to cells4.4. Fight disease (WBC, platelets)Fight disease (WBC, platelets)5.5. Regulate body temperatureRegulate body temperature

What are the parts of blood?What are the parts of blood?1.1. RED BLOOD CELLS (RBC’s)RED BLOOD CELLS (RBC’s)

- make up 44% of your blood. - make up 44% of your blood. - contain hemoglobin made with iron - contain hemoglobin made with iron which which carries oxygen. carries oxygen. - produced by the bone marrow- produced by the bone marrow

2.2. WHITE BLOOD CELLS (WBC’S)WHITE BLOOD CELLS (WBC’S)- make up 0.5% of your blood- make up 0.5% of your blood- fight infection by killing germs and - fight infection by killing germs and producing antibodiesproducing antibodies- produced by bone marrow and lymph - produced by bone marrow and lymph nodesnodes

3.3.PLATELETS PLATELETS - make up 0.5% of your blood- make up 0.5% of your blood- clot blood to stop bleeding- clot blood to stop bleeding- form scabs- form scabs

4. 4. PLASMAPLASMA- make up 55% of your blood- make up 55% of your blood- liquid part of the blood (mostly - liquid part of the blood (mostly

water) which carries water) which carries materials to materials to and from body and from body cellscells

Do NowDo Now::

Which blood cell is the largest? Which blood cell is the largest? The smallest? The smallest? Where is each blood cell made?Where is each blood cell made?Which blood cell is the most Which blood cell is the most numerous in blood?numerous in blood?

What are the 4 blood typesWhat are the 4 blood types??- A, B, AB, OA, B, AB, OWhy is knowing your blood Why is knowing your blood type type

importantimportant??- If you need to get blood, it must - If you need to get blood, it must

be a compatible type of blood. be a compatible type of blood. Crossing blood types could result Crossing blood types could result in blood clots and possibly death.in blood clots and possibly death.

What are the types of blood What are the types of blood vesselsvessels??1.1. ARTERIESARTERIES

- carry blood - carry blood AWAYAWAY from the heart. from the heart. - they are thick, muscular blood vessels. - they are thick, muscular blood vessels. - they have a - they have a PULSEPULSE. . - - AORTAAORTA is the largest artery in the is the largest artery in the body.body.

2. 2. VEINSVEINS- carry blood to the heart. - carry blood to the heart. - they have - they have VALVESVALVES to prevent backflow to prevent backflow of of blood.blood.- not as thick as arteries.- not as thick as arteries.

3.3. CAPILLARIESCAPILLARIES – – connect arteries and veinsconnect arteries and veins- smallest blood vessels- smallest blood vessels- only 1 cell thick to allow - only 1 cell thick to allow DIFFUSION DIFFUSION of nutrients and gasses of nutrients and gasses from blood to from blood to cellscells

AimAim:: How does the How does the HEARTHEART work??work??

Do NowDo Now::1)1) Take out HWTake out HW2)2) Which blood type is called …Which blood type is called …

the universal donor?the universal donor?the universal recipient?the universal recipient?

What is the heart?What is the heart?- Muscular organ which pumps bloodMuscular organ which pumps bloodWhat are the parts of the heartWhat are the parts of the heart??1.1. ATRIAATRIA

- small upper chambers (there are - small upper chambers (there are 2). 2). - collect blood from the body (right) - collect blood from the body (right)

and and lungs (left)lungs (left)2.2. VENTRICLESVENTRICLES

- large, muscular, lower chambers - large, muscular, lower chambers (there are 2)(there are 2)- pump blood to the body and lungs- pump blood to the body and lungs

3.3. VALVESVALVES– – flaps of tissue which prevent flaps of tissue which prevent blood blood from flowing backwards. from flowing backwards. - found between atria & ventricles- found between atria & ventricles

4. 4. SEPTUMSEPTUM- wall of muscle which separate left - wall of muscle which separate left

and and right sides of the heart. right sides of the heart. - this keeps oxygenated blood - this keeps oxygenated blood separate from deoxygenated blood.separate from deoxygenated blood.

Aim: Aim: What are Some Disorders of the What are Some Disorders of the Circulatory System?Circulatory System?

Do Now:Do Now:Study For QuizStudy For QuizYou have 4 minutesYou have 4 minutes

NO NO TALKING !!!!!TALKING !!!!!

What controls heart rateWhat controls heart rate??

- the brain (medulla) and special - the brain (medulla) and special tissue in heart called the tissue in heart called the PACEMAKERPACEMAKER. Avg. pulse is 70-. Avg. pulse is 70-80 beats per minute80 beats per minute

What are some diseases of the What are some diseases of the circulatory systemcirculatory system??

1.1. STROKESTROKE- blockage of blood to the brain- blockage of blood to the brain

2.2. HEART ATTACKHEART ATTACK- blockage of blood to the muscles - blockage of blood to the muscles of of the heartthe heart

3.3. HEART MURMURHEART MURMUR- leaky heart valve- leaky heart valve

4.4. VARICOSE VEINSVARICOSE VEINS- leaky leg valves- leaky leg valves

4.4. ANEMIAANEMIA- lack of RBC’s, can’t carry oxygen, - lack of RBC’s, can’t carry oxygen, due due to low iron in diet.to low iron in diet.

5.5. LEUKEMIALEUKEMIA- cancer resulting in too many WBC’s- cancer resulting in too many WBC’s

6.6. HEMOPHILIAHEMOPHILIA- slow blood clotting- slow blood clotting

7.7. ANEURISMANEURISM- tear in a blood vessel- tear in a blood vessel

Aim: Aim: What is the LYMPHATIC SYSTEM??What is the LYMPHATIC SYSTEM??

Do Now:Do Now:

1.1. Copy HWCopy HW2.2. What are the body’s three What are the body’s three

lines of defenses??lines of defenses??

LYMPHATIC SYSTEMLYMPHATIC SYSTEMWhat is LYMPHWhat is LYMPH??- Lymph is plasma which has diffused Lymph is plasma which has diffused

out of blood vessels and is recollected out of blood vessels and is recollected by lymph vessels to be returned to the by lymph vessels to be returned to the bloodblood

What are LYMPH NODESWhat are LYMPH NODES??- Specialized tissues which store and Specialized tissues which store and

produce WBC’s. produce WBC’s. - They filter foreign invaders from lymphThey filter foreign invaders from lymph- They become swollen when you are They become swollen when you are

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