Anatomy & Physiology III - BIOS 255 (Proficiency Exam Review)| Questions & answers

Anatomy & Physiology III - BIOS 255 (Proficiency Exam Review)




a patient has a stroke volume of 70ml/beat, a heart rate of 70 beats per
minute, a mean arterial pressure of 100, systolic BP of 95 and diastolic
BP of 60. Calculate the output of this patient. - CORRECT ANSWER -
CO = SV x HR

70 x 70 = 4900ml/min

= 4.9L/min



an individual has a increase in afterload, what effect would this have on
his MAP? - CORRECT ANSWER - increase in after load = decrease in SV
= decrease in CO = decrease in MAP



blood vessels closest to the heart - CORRECT ANSWER - highest BP



blood vessels furthest from the heart - CORRECT ANSWER - low BP



capillaries only consist of what? - CORRECT ANSWER - basement
membrane and endothelium layer



define cardiac output - CORRECT ANSWER - amount of blood pumped
out by each ventricle in one minute

, does the right atrium have oxygenated or deoxygenated blood? -
CORRECT ANSWER - deoxygenated



during the cardiac cycle, the heart experiences two isovulmetric states.
When do these occur? - CORRECT ANSWER - the beginning of
ventricular systole and beginning of ventricular diastole



during ventricular systole, what happens to the pressure in the
ventricle? - CORRECT ANSWER - it increases



during ventricular systole, what is happening to the blood volume within
the ventricle? - CORRECT ANSWER - first, there is no change

- then once the pressure is great enough, the semilunar valves open and
volume drops



how many cusps does the left AV valve have? - CORRECT ANSWER -
two cusps (Bicuspid)



how many cusps does the right AV valve have? - CORRECT ANSWER -
three cusps (TRIcuspid)



list physical characteristics of cardiac muscle cells - CORRECT ANSWER
- - intercalated discs

- striated

- nuclei