1|Page
PHYSIOLOGY II CARDIOVASCULAR PRACTICE TEST
WITH 350 QUESTIONS AND CORRECT VERIFIED
ANSWERS/ D313 CARDIOVASCULAR TEST QS & AS
PLUS A STUDY GUIDE
The resilience of bone is thought to come from which of
the following?
A. amount of mineral salt and protein in the bone
B. amount of mineral salts in the bone
C. sacrificial bonds in or between collagen molecules
D. presence of osteoblasts in the bone - ..ANSWER...✓✓
C. sacrificial bonds in or between collagen molecules
In some cases, the epiphyseal plate of the long bones of
children closes too early. What might be the cause?
A. overproduction of thyroid hormone
B. osteoblast activity exceeds osteoclast activity
C. elevated levels of sex hormones
D. too much vitamin D in the diet - ..ANSWER...✓✓ C.
elevated levels of sex hormones
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In humans, the effect of the hormone calcitonin is
to________.
A. increase blood calcium levels by stimulating
osteoclasts
B. temporarily decrease blood calcium levels when
administered in large doses
C. decrease mitosis of chondrocytes at the epiphyseal
plate
D. increase blood calcium levels by inhibiting osteoblasts
- ..ANSWER...✓✓ B. temporarily decrease blood calcium
levels when administered in large doses
Which of the following is a bone disorder characterized by
excessive and haphazard bone deposit and resorption?
A. osteoporosis
B. osteomalacia
C. rickets
D. Paget's disease - ..ANSWER...✓✓ D. Paget's disease
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Troponin, a major protein in thin filaments, is a globular
protein with three polypeptide subunits. Which of the
following is NOT a function of the troponin?
A. One subunit binds to calcium ions.
B. One subunit attaches troponin to actin.
C. One subunit binds tropomyosin and helps position it on
actin.
D. One subunit binds to potassium ions. - ..ANSWER...✓✓
D. One subunit binds to potassium ions.
One of the functions of skeletal muscle contraction is
production of heat.
True
False - ..ANSWER...✓✓ TRUE
Of the following items listed below, which is the best
description for why skeletal muscle stores glycogen?
A. Skeletal muscle is a heavy consumer of energy.
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B. Glycogen provides a smooth surface for filaments to
slide on.
C. Glycogen is part of muscles rigid supporting
framework.
D. The glycogen is an insulating layer that helps regulate
body temperature. - ..ANSWER...✓✓ A. Skeletal muscle
is a heavy consumer of energy.
Although all the anatomical parts of muscle work
together to give it it's characteristics, which of the
following proteins listed below would be most associated
with the characteristics of EXCITABILITY?
A. elastic (titin) filaments
B. actin of thin filaments
C. acetylcholine receptors in the motor end plate
D. the Na+-K+ pump - ..ANSWER...✓✓ C. acetylcholine
receptors in the motor end plate
Although all the anatomical parts of muscle work
together to give it it's characteristics, which of the
following proteins listed below would be most associated
with the characteristics of CONTRACTILITY?
PHYSIOLOGY II CARDIOVASCULAR PRACTICE TEST
WITH 350 QUESTIONS AND CORRECT VERIFIED
ANSWERS/ D313 CARDIOVASCULAR TEST QS & AS
PLUS A STUDY GUIDE
The resilience of bone is thought to come from which of
the following?
A. amount of mineral salt and protein in the bone
B. amount of mineral salts in the bone
C. sacrificial bonds in or between collagen molecules
D. presence of osteoblasts in the bone - ..ANSWER...✓✓
C. sacrificial bonds in or between collagen molecules
In some cases, the epiphyseal plate of the long bones of
children closes too early. What might be the cause?
A. overproduction of thyroid hormone
B. osteoblast activity exceeds osteoclast activity
C. elevated levels of sex hormones
D. too much vitamin D in the diet - ..ANSWER...✓✓ C.
elevated levels of sex hormones
,2|Page
In humans, the effect of the hormone calcitonin is
to________.
A. increase blood calcium levels by stimulating
osteoclasts
B. temporarily decrease blood calcium levels when
administered in large doses
C. decrease mitosis of chondrocytes at the epiphyseal
plate
D. increase blood calcium levels by inhibiting osteoblasts
- ..ANSWER...✓✓ B. temporarily decrease blood calcium
levels when administered in large doses
Which of the following is a bone disorder characterized by
excessive and haphazard bone deposit and resorption?
A. osteoporosis
B. osteomalacia
C. rickets
D. Paget's disease - ..ANSWER...✓✓ D. Paget's disease
,3|Page
Troponin, a major protein in thin filaments, is a globular
protein with three polypeptide subunits. Which of the
following is NOT a function of the troponin?
A. One subunit binds to calcium ions.
B. One subunit attaches troponin to actin.
C. One subunit binds tropomyosin and helps position it on
actin.
D. One subunit binds to potassium ions. - ..ANSWER...✓✓
D. One subunit binds to potassium ions.
One of the functions of skeletal muscle contraction is
production of heat.
True
False - ..ANSWER...✓✓ TRUE
Of the following items listed below, which is the best
description for why skeletal muscle stores glycogen?
A. Skeletal muscle is a heavy consumer of energy.
, 4|Page
B. Glycogen provides a smooth surface for filaments to
slide on.
C. Glycogen is part of muscles rigid supporting
framework.
D. The glycogen is an insulating layer that helps regulate
body temperature. - ..ANSWER...✓✓ A. Skeletal muscle
is a heavy consumer of energy.
Although all the anatomical parts of muscle work
together to give it it's characteristics, which of the
following proteins listed below would be most associated
with the characteristics of EXCITABILITY?
A. elastic (titin) filaments
B. actin of thin filaments
C. acetylcholine receptors in the motor end plate
D. the Na+-K+ pump - ..ANSWER...✓✓ C. acetylcholine
receptors in the motor end plate
Although all the anatomical parts of muscle work
together to give it it's characteristics, which of the
following proteins listed below would be most associated
with the characteristics of CONTRACTILITY?
