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Bios 255 exam 1 Questions with Complete Solutions (Latest 2025)
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Bios 255 exam 1 Questions with Complete Solutions (Latest 2025)
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Bios 255 exam 1 Questions withComplete Solutions (Latest 2025)
name the structure and whether it contains oxygenated or
deoxygenated blood - Correct Answers ✅right atrium;
deoxygenated
name the structure - Correct Answers ✅aortic semilunar
valve
oxygen is carried by _______ cells. it binds to proteins called
______ that contain iron - Correct Answers ✅erythrocytes;
hemoglobin
of the formed elements, which cells are responsible for
immune function, clotting, and gas transfer-in that order? -
Correct Answers ✅leukocytes, platelets, erythrocytes
what are the major functions of blood? (you must name 3) -
Correct Answers ✅1) plays a role in immune function
2) temp regulation
3) pH regulation
4) gas/nutrients/ waste transport
5) regulates water loss
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 -
, Bios 255 exam 1 Questions with
Complete Solutions (Latest 2025)
Correct Answers
✅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 Answers
✅upstroke=sodium; depolarization
plateau=calcium; contraction
downstroke=potassium; relaxation
what are the three layers of the heart? - Correct Answers
✅epicardium, myocardium, endocardium
what is the fluid filled sac called that surrounds the heart? -
Correct Answers ✅pericardium
when red blood cells get broken down, the iron molecule is
transferred from the macrophage to the liver with which
transfer protein? - Correct Answers ✅transferrin
Which wave indicates atrial depolarization? - Correct
Answers ✅P wave
what makes up this component of whole blood? - Correct
Answers ✅serum, water, plasma proteins, nutrients,
dissolved gases and electrolytes
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