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bios 255 exam 1; Questions & Answers 100% Solved
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bios 255 exam 1; Questions & Answers 100% Solvedname the structure and whether it contains oxygenated or deoxygenated blood CORRECT
ANS-right atrium; deoxygenated
name the structure CORRECT ANS-aortic semilunar valve
oxygen is carried by _______ cells. it binds to proteins called ______ that contain iron
CORRECT ANS-erythrocytes; hemoglobin
of the formed elements, which cells are responsible for immune function, clotting, and gas
transfer-in that order? CORRECT ANS-leukocytes, platelets, erythrocytes
what are the major functions of blood? (you must name 3) CORRECT ANS-1) plays a role in
immune function
2) temp regulation
3) pH regulation
4) gas/nutrients/ waste transport
5) regulates water loss
, bios 255 exam 1; Questions & Answers 100% Solved
a patient has a stroke volume of 70ml/beat, a heart rate of 70 beats/min, a mean arterial
pressure of 100, systolic BP of 95 and diastolic BP of 60. calculate output of this patient
CORRECT ANS-CO=SVxHR=70ml/beat/min=4900ml/min=4.9L/min
which ions mediate the upstroke, plateau, and downstroke of a cardiac action potential.
indicate the contraction phase that correlates to these events CORRECT ANS-
upstroke=sodium; depolarization
plateau=calcium; contraction
downstroke=potassium; relaxation
what are the three layers of the heart? CORRECT ANS-epicardium, myocardium,
endocardium
what is the fluid filled sac called that surrounds the heart? CORRECT ANS-pericardium
when red blood cells get broken down, the iron molecule is transferred from the macrophage
to the liver with which transfer protein? CORRECT ANS-transferrin
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