BIOS 255 2026 EXAM REVIEW PACK FULLY
SOLVED QUESTIONS
◉name the structure . Answer: aortic semilunar valve
◉oxygen is carried by _______ cells. it binds to proteins called ______
that contain iron . Answer: erythrocytes; hemoglobin
◉of the formed elements, which cells are responsible for immune
function, clotting, and gas transfer-in that order? . Answer:
leukocytes, platelets, erythrocytes
◉what are the major functions of blood? (you must name 3) .
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 . Answer:
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 . Answer: upstroke=sodium;
depolarization
plateau=calcium; contraction
downstroke=potassium; relaxation
◉what are the three layers of the heart? . Answer: epicardium,
myocardium, endocardium
◉what is the fluid filled sac called that surrounds the heart? .
Answer: pericardium
◉when red blood cells get broken down, the iron molecule is
transferred from the macrophage to the liver with which transfer
protein? . Answer: transferrin
◉Which wave indicates atrial depolarization? . Answer: P wave
◉what makes up this component of whole blood? . Answer: serum,
water, plasma proteins, nutrients, dissolved gases and electrolytes
SOLVED QUESTIONS
◉name the structure . Answer: aortic semilunar valve
◉oxygen is carried by _______ cells. it binds to proteins called ______
that contain iron . Answer: erythrocytes; hemoglobin
◉of the formed elements, which cells are responsible for immune
function, clotting, and gas transfer-in that order? . Answer:
leukocytes, platelets, erythrocytes
◉what are the major functions of blood? (you must name 3) .
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 . Answer:
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 . Answer: upstroke=sodium;
depolarization
plateau=calcium; contraction
downstroke=potassium; relaxation
◉what are the three layers of the heart? . Answer: epicardium,
myocardium, endocardium
◉what is the fluid filled sac called that surrounds the heart? .
Answer: pericardium
◉when red blood cells get broken down, the iron molecule is
transferred from the macrophage to the liver with which transfer
protein? . Answer: transferrin
◉Which wave indicates atrial depolarization? . Answer: P wave
◉what makes up this component of whole blood? . Answer: serum,
water, plasma proteins, nutrients, dissolved gases and electrolytes
