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Form & Function
Circulatory Anatomy
Vocabulary
Blood
100
pump blood out of heart
ventricles
100
cardiovascular system is made up of these 3 things:
blood, heart, blood vessels
100
liquid part of blood
plasma
100
what part of the blood carries oxygen?
hemoglobin on Red BLood Cells
200
structures prevents blood from flowing backward
valves
200
blood returns to the heart via these vessels
veins
200
the largest artery in the body
aorta
200
what is blood composed of?
rbc's, wbc's, platelets, plasma
300
what causes blood pressure?
the ventricles contracting to pump blood through the body
300
blood leaves the heart and travels in these vessels
arteries
300
Substances are exchanged between the blood and body cells in the blood vessels known as
capillaries
300
what do white blood cells do?
fight disease (by recognizing disease-causing organisms & alerting body to invasion or producing chemicals to fight invaders or surround & kill)
400
blood pressure is higher in which type of blood vessel?
arteries
400
how does blood flow in "2 loops" through the body?
1. blood travels from the heart to the lungs & back to the heart 2. blood travels from the heart throughout the body and back to the heart
400
wall of tissue separating L & R side of the heart
septum
400
what do platelets do?
cell fragments that help form blood clots platelets collect at the site of the wound Fibrin (protein) produced to to weave a net of fibers across the cut which catches platelets & blood cells to form a clot
500
How does heart rate change with varied activity?
As observed in our pulse rate lab, heart rate increases with increased physical activity and returns to resting rate when physical activity subsides. Hearth Rate is higher for running than walking. (the demands on the cells in the body for oxygen and glucose & waste removal are greater during periods of high activity)
500
In what order does blood flow through the heart?
Blood enters the heart through the rt. atria, then proceeds to the right ventricle, out of the heart into the lungs, then back in the left atria, to the left ventricle and out the aorta to the body
500
what is the name of the device used to measure blood pressure
sphygmomanometer
500
Why are people with type O blood termed universal donors?
Type O blood has no markers on it (Type A has markers that recognize type B blood and mount a clumping defense) so it can be given to any individual with any type of blood since it will not be recognized as "foreign" / their body will not react to markers by clumping