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EXSS 276: Exam 3 Questions And Answers
Latest Updated 2025 |100% Verified.
Which of the following does not describe a physiological role of blood? - Answer✔A. Gas
transport
*B. Gas exchange*
C. Temperature regulation
D. Protection against infection
Blood plasma consists mostly of: - Answer✔Water
Which of the following is/are true regarding hemoglobin? - Answer✔It makes up approximately
1/3 of a red blood cell's weight
Which of the following factor(s) may lead to increased erythropoiesis? - Answer✔- Injecting
large doses of synthetic erythropoietin
- Increased tissue demands for oxygen, stimulated by aerobic exercise training.
- Spending several weeks in the Rocky Mountains
What is the first step in the process of hemostasis (intrinsic)? - Answer✔Vascular spasm or a
lesion to a vessel
The medical condition that is characterized, in one way, by a decreased number of erythrocytes
is called: - Answer✔Anemia
1
, ©EVERLY 2025 ALL RIGHTS RESERVED
Individuals with Type O- blood are considered "universal donors" because: - Answer✔Their red
blood cells contain neither the A antigen, the B antigen, nor the Rh antigen.
Which of the following is true regarding the coronary circuit (blood vessels)? - Answer✔- It is
the branch of circulation that provides blood to the heart itself
- Complete obstruction of a coronary artery can lead to a myocardial infarction.
- Coronary blood vessels fill due to the pressure gradient that occurs when the aorta is full of
blood and the heart is relaxed.
Reduced blood flow through a coronary artery could lead to which medical condition? -
Answer✔Ischemia
The mitral valve will be open: - Answer✔- During the ventricular filling phase of the cardiac
cycle
- When the pressure in the left atrium is higher than the pressure in the left ventricle
- During the atrial contraction phase of the cardiac cycle
The aortic semilunar valve opens when _______. What causes the aortic semilunar valve to
open? - Answer✔The left ventricle contracts; pressure in the left ventricle is higher than in the
aorta.
Which part of the heart's electrical conduction system is also called the pacemaker? -
Answer✔Sino Atrial node
Which of the following structures in a cardiac muscle cell is specifically responsible for the
propagation of action potentials throughout the myocardium (cardiac muscle cells)? -
Answer✔Gap junctions
2
EXSS 276: Exam 3 Questions And Answers
Latest Updated 2025 |100% Verified.
Which of the following does not describe a physiological role of blood? - Answer✔A. Gas
transport
*B. Gas exchange*
C. Temperature regulation
D. Protection against infection
Blood plasma consists mostly of: - Answer✔Water
Which of the following is/are true regarding hemoglobin? - Answer✔It makes up approximately
1/3 of a red blood cell's weight
Which of the following factor(s) may lead to increased erythropoiesis? - Answer✔- Injecting
large doses of synthetic erythropoietin
- Increased tissue demands for oxygen, stimulated by aerobic exercise training.
- Spending several weeks in the Rocky Mountains
What is the first step in the process of hemostasis (intrinsic)? - Answer✔Vascular spasm or a
lesion to a vessel
The medical condition that is characterized, in one way, by a decreased number of erythrocytes
is called: - Answer✔Anemia
1
, ©EVERLY 2025 ALL RIGHTS RESERVED
Individuals with Type O- blood are considered "universal donors" because: - Answer✔Their red
blood cells contain neither the A antigen, the B antigen, nor the Rh antigen.
Which of the following is true regarding the coronary circuit (blood vessels)? - Answer✔- It is
the branch of circulation that provides blood to the heart itself
- Complete obstruction of a coronary artery can lead to a myocardial infarction.
- Coronary blood vessels fill due to the pressure gradient that occurs when the aorta is full of
blood and the heart is relaxed.
Reduced blood flow through a coronary artery could lead to which medical condition? -
Answer✔Ischemia
The mitral valve will be open: - Answer✔- During the ventricular filling phase of the cardiac
cycle
- When the pressure in the left atrium is higher than the pressure in the left ventricle
- During the atrial contraction phase of the cardiac cycle
The aortic semilunar valve opens when _______. What causes the aortic semilunar valve to
open? - Answer✔The left ventricle contracts; pressure in the left ventricle is higher than in the
aorta.
Which part of the heart's electrical conduction system is also called the pacemaker? -
Answer✔Sino Atrial node
Which of the following structures in a cardiac muscle cell is specifically responsible for the
propagation of action potentials throughout the myocardium (cardiac muscle cells)? -
Answer✔Gap junctions
2
