BSC2086c - Exam 1 - Quiz 2 Questions and Answers with Verified
Solutions | Latest Update
QUESTION
The_________ is composed of circularly arranged layers of smooth muscle cells.
A. tunica media
B. tunica intima
C. tunica interna
D. tunica externa
E. None of the answers is correct.
Answer:
A. tunica media
QUESTION
Which circuit of the cardiovascular system is responsible for sending blood to the kidneys,
stomach, and pelvic regions?
A. Pulmonary circuit
B. Systemic circuit
C. Coronary circuit
D. Visceral circuit
Answer:
B. Systemic circuit
QUESTION
Extensions from megakaryocytes that extend through blood vessel walls in red marrow are sliced
off from the cells by the force of blood flow. These extensions are
A. proplatelets.
B. reticulocytes.
C. late erythroblasts.
D. promegakaryocytes.
E. myeloid stem cells.
Answer:
A. proplatelets.
, QUESTION
As blood is pumped out of the heart and into the major arteries leaving the heart, it
A. fills the cusps of the semilunar valves, causing them to expand and block the backflow of
blood B. pushes against the semilunar valves and closes them.
C. pushes against the semilunar valves and opens them.
D. fills the cusps of the atrioventricular valve causing opening of the bicuspid and closure of the
tricuspid.
E. pushes against the atrioventricular valves and opens them.
Answer:
C. pushes against the semilunar valves and opens them.
QUESTION
At the bifurcation of the aorta in the pelvic region, the_________ artery arises to supply the
sacrum and coccyx.
A. lumbar
B. femoral
C. median sacral
D. posterior intercostal
E. subclavian
Answer:
C. median sacral
QUESTION
Blood colloid osmotic pressure is largely due to
A. the proteins in the blood, and it promotes filtration.
B. the pressure generated by the heart, and it favors osmosis into the arteriole end of the capillary
bed.
C. the high amount of water in the blood, and it promotes filtration from arterioles.
D. the proteins in the blood, and it promotes reabsorption.
E. the high amount of water in the blood, and it promotes diffusion out of the capillaries.
Answer:
D. the proteins in the blood, and it promotes reabsorption.
QUESTION
Most of the calcium that triggers contraction of cardiac muscle comes A. into the cell through
leakage channels in the sarcolemma.
B. into the cell through voltage-gated channels in the sarcolemma.
C. from the Golgi apparatus of the cell.
D. from the sarcoplasmic reticulum of the cell.
Answer:
D. from the sarcoplasmic reticulum of the cell.
Solutions | Latest Update
QUESTION
The_________ is composed of circularly arranged layers of smooth muscle cells.
A. tunica media
B. tunica intima
C. tunica interna
D. tunica externa
E. None of the answers is correct.
Answer:
A. tunica media
QUESTION
Which circuit of the cardiovascular system is responsible for sending blood to the kidneys,
stomach, and pelvic regions?
A. Pulmonary circuit
B. Systemic circuit
C. Coronary circuit
D. Visceral circuit
Answer:
B. Systemic circuit
QUESTION
Extensions from megakaryocytes that extend through blood vessel walls in red marrow are sliced
off from the cells by the force of blood flow. These extensions are
A. proplatelets.
B. reticulocytes.
C. late erythroblasts.
D. promegakaryocytes.
E. myeloid stem cells.
Answer:
A. proplatelets.
, QUESTION
As blood is pumped out of the heart and into the major arteries leaving the heart, it
A. fills the cusps of the semilunar valves, causing them to expand and block the backflow of
blood B. pushes against the semilunar valves and closes them.
C. pushes against the semilunar valves and opens them.
D. fills the cusps of the atrioventricular valve causing opening of the bicuspid and closure of the
tricuspid.
E. pushes against the atrioventricular valves and opens them.
Answer:
C. pushes against the semilunar valves and opens them.
QUESTION
At the bifurcation of the aorta in the pelvic region, the_________ artery arises to supply the
sacrum and coccyx.
A. lumbar
B. femoral
C. median sacral
D. posterior intercostal
E. subclavian
Answer:
C. median sacral
QUESTION
Blood colloid osmotic pressure is largely due to
A. the proteins in the blood, and it promotes filtration.
B. the pressure generated by the heart, and it favors osmosis into the arteriole end of the capillary
bed.
C. the high amount of water in the blood, and it promotes filtration from arterioles.
D. the proteins in the blood, and it promotes reabsorption.
E. the high amount of water in the blood, and it promotes diffusion out of the capillaries.
Answer:
D. the proteins in the blood, and it promotes reabsorption.
QUESTION
Most of the calcium that triggers contraction of cardiac muscle comes A. into the cell through
leakage channels in the sarcolemma.
B. into the cell through voltage-gated channels in the sarcolemma.
C. from the Golgi apparatus of the cell.
D. from the sarcoplasmic reticulum of the cell.
Answer:
D. from the sarcoplasmic reticulum of the cell.
