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29 terms

Biology chapter 38

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cardiovascular system
connects the muscle and organ through the bodies through extensive vessels that transport blood
arteries
blood vessels that carry blood away from the heart
capillaries
tiny blood vessels that allow the exchange of gas, nutrients, and other molecules in the blood
veins
blood vessels that carry the blood back to the heart
valve
a flap of tissue that prevents the blood from flowing backwards on the way to the heart
lymphatic system
collects and recycles fluids leaked from the cardiovascular system
plasma
the liquid portion of the blood
red blood cells
cells that carry oxygen
anemia
a condition in which the oxygen carrying ability of the blood is reduced
white blood cells
cells whose primary job is to defend the body
platelets
play an important role in clotting
ABO blood group system
the primary blood types are A, B, AB, and O
Rh factor
can lead to fetal death
atria
chambers that receive blood going to the heart
ventricles
thick walled chambers that pump blood away from the heart
vena cava
2 large veins that collect oxygen poor blood
aorta
the largest artery in the body
coronary arteries
carry freshly oxygenated blood to the heart muscle
SA node
the cells that make this up act as the pace maker to the heart
blood pressure
the force exerted by blood as it moves through blood vessels
pulse
a series of pressure waves within an artery
heart attack
occurs when an area of the heart muscle stops working
stroke
when an area of the brain dies
pharynx
a muscular tube in the upper throat
larynx
the air continues through a passage way for air
trachea
a long straight tube in the chest cavity
bronchi
2 smaller tubes leading to the lungs
alveoli
clusters of air sacs where gases are exchanged
diaphragm
a powerful muscle spanning the rib cage under the lungs