circulatory system

consists of the cardiovascular system and lymphatic system.

Blood carries:

oxygen, vitamins, nutrients, antibodies, away waste (co2) and other substances.

5 types of blood vessels:

arteries, capillaries, veins, arterioles, and venules.

directionality of blood pumped by heart:

arteries> arterioles> arterial capillaries> tissue cells> venous capillaries>venules> veins

arter/o

artery

-ole

little

lymphat/o

lymphatic

Heart chambers:

Right/left atrium and right/left ventricle

atrio+ventricul+ar

valves between the atria and ventricles

Aorta

artery where blood leaves heart to travel to body

aort/o

aorta

peri+card+ium

sac made up of double membrane, encloses heart.

peri-

around

-ium

membrane

myocardium

heart muscle

coronary

encircling, refers to how coronary arteries encircle heart.

Blood pressure:

pressure exerted by the blood on the wall of an artery

1st bp #:

represents maximum pressure on artery, systolic.

2nd bp # :

amount of pressure that still exists when heart is relaxed, diastolic.

lymphatic system function:

to collect fluid that escapes from the blood capillaries and return it to the circulation.

the lymphatic system depends on:

the muscular contraction because there is no pump action.

the lymphatic system is composed of:

lymph vessels, lymph nodes, lymph(fluid), tonsils, thymus and spleen.

adenoid/o

adenoids

cervic/o

neck

home/o

sameness

lymphat/o

lymphatic

splen/o

spleen

thromb/o

blood clot/ thrombus

Normal and healthy blood pressure

120/80 mmHg