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BIOS 255 EXAM 2026 QUESTIONS
AND CORECT ANSWERS
name the structure and whether it contains oxygenated or deoxygenated
blood - corect answer-right atrium; deoxygenated
name the structure - corect answer-aortic semilunar valve
oxygen is carried by _______ cells. it binds to proteins called ______ that
contain iron - corect answer-erythrocytes; hemoglobin
of the formed elements, which cells are responsible for immune function,
clotting, and gas transfer-in that order? - corect answer-leukocytes,
platelets, erythrocytes
what are the major functions of blood? (you must name 3) - corect answer-
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 - corect answer-
CO=SVxHR=70ml/beat/min=4900ml/min=4.9L/min
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which ions mediate the upstroke, plateau, and downstroke of a cardiac
action potential. indicate the contraction phase that correlates to these
events - corect answer-upstroke=sodium; depolarization
plateau=calcium; contraction
downstroke=potassium; relaxation
what are the three layers of the heart? - corect answer-epicardium,
myocardium, endocardium
what is the fluid filled sac called that surrounds the heart? - corect answer-
pericardium
when red blood cells get broken down, the iron molecule is transferred from
the macrophage to the liver with which transfer protein? - corect answer-
transferrin
Which wave indicates atrial depolarization? - corect answer-P wave
what makes up this component of whole blood? - corect answer-serum,
water, plasma proteins, nutrients, dissolved gases and electrolytes
what type of white blood cell is displayed in this image - corect answer-
eosinophils
where does the breakdown of red blood cells start? - corect answer-in a
macrophage
BIOS 255 EXAM 2026 QUESTIONS
AND CORECT ANSWERS
name the structure and whether it contains oxygenated or deoxygenated
blood - corect answer-right atrium; deoxygenated
name the structure - corect answer-aortic semilunar valve
oxygen is carried by _______ cells. it binds to proteins called ______ that
contain iron - corect answer-erythrocytes; hemoglobin
of the formed elements, which cells are responsible for immune function,
clotting, and gas transfer-in that order? - corect answer-leukocytes,
platelets, erythrocytes
what are the major functions of blood? (you must name 3) - corect answer-
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 - corect answer-
CO=SVxHR=70ml/beat/min=4900ml/min=4.9L/min
, 2 |Page
which ions mediate the upstroke, plateau, and downstroke of a cardiac
action potential. indicate the contraction phase that correlates to these
events - corect answer-upstroke=sodium; depolarization
plateau=calcium; contraction
downstroke=potassium; relaxation
what are the three layers of the heart? - corect answer-epicardium,
myocardium, endocardium
what is the fluid filled sac called that surrounds the heart? - corect answer-
pericardium
when red blood cells get broken down, the iron molecule is transferred from
the macrophage to the liver with which transfer protein? - corect answer-
transferrin
Which wave indicates atrial depolarization? - corect answer-P wave
what makes up this component of whole blood? - corect answer-serum,
water, plasma proteins, nutrients, dissolved gases and electrolytes
what type of white blood cell is displayed in this image - corect answer-
eosinophils
where does the breakdown of red blood cells start? - corect answer-in a
macrophage
