Bios 255 exam 1 / Questions & Expertly Verified Answers, 2025 / 2026.name the structure and whether it contains oxygenated or deoxygenated blood -
Answer:
right atrium; deoxygenated
Qs: name the structure -
Answer:
aortic semilunar valve
Qs: oxygen is carried by _______ cells. it binds to proteins called ______ that
contain iron -
Answer:
erythrocytes; hemoglobin
Qs: of the formed elements, which cells are responsible for immune function,
clotting, and gas transfer-in that order? -
Answer:
leukocytes, platelets, erythrocytes
Qs: what are the major functions of blood? (you must name 3) -
Answer:
1) plays a role in immune function
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2) temp regulation 3) pH regulation 4) gas/nutrients/ waste transport 5) regulates water loss
Qs: 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 -
Answer:
CO=SVxHR=70ml/beat/min=4900ml/min=4.9L/min
Qs: which ions mediate the upstroke, plateau, and downstroke of a cardiac
action potential. indicate the contraction phase that correlates to these events -
Answer:
upstroke=sodium; depolarization plateau=calcium; contraction downstroke=potassium; relaxation
Qs: what are the three layers of the heart? -
Answer:
epicardium, myocardium, endocardium
Qs: what is the fluid filled sac called that surrounds the heart? -
Answer:
pericardium
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