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Hole's Essentials
Heart and Cardiovascular System
10
Anatomy
Undergraduate 1
01/17/2010

Additional Anatomy Flashcards

 


 

Cards

Term
pulse
Definition
ability to feel the pressure in the arteries during ventricular contraction
Term
blood pressure
Definition
force of blood against the inner walls of the blood vessels anywhere in the cardiovascular system
Term
3 reasons for high blood pressure
Definition
atherosclerosis, stress, activity
Term
venules
Definition
lead from capillaries and merge to form veins that return blood to the heart
Term
differences between arteries and veins
Definition
veins- tunica media is much thinner (one layer) larger lumen, have valves
Term
three layers of arteries
Definition
tunica intima (innermost layer) smooth for blood to flow through
tunica media (middle layer) smooth muscle to contract moving blood
tunica externa (outermost layer) connective tissue
Term
lubb
Definition
closing of aortic valves
Term
dubb
Definition
closing of ventricular valves
Term
reasons for change in heart rate
Definition
1. volume of blood pumped to accommodate cellular requirements (exercise)
2. body temperature
3. certain ions: K - lack of = arythmia
Ca - lack of = heart action depressed
Term
cardiac center
Definition
in brain, medulla oblongata contains cardiac center to maintain heart rate
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