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BIO 152 (Physiology) FINAL EXAM QUESTIONS AND ANSWERS TO BOOST YOUR GRADES
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BIO 152 (Physiology) FINAL EXAM QUESTIONS AND ANSWERS TO BOOST YOUR GRADES
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BIO 152 (Physiology) FINAL EXAMQUESTIONS AND ANSWERS TO BOOST
YOUR GRADES.
The primary reservoir for calcium that is released during excitation-
contraction coupling in a skeletal muscle fiber is
a. sarcoplasmic reticulum.
b. endoplasmic reticulum.
c. transverse tubules.
d. Golgi bodies.
e. troponin.
Verified Answer -a. sarcoplasmic reticulum.
Which statement about skeletal systems is true?
a. An exoskeleton consists mostly of cartilage.
b. A hydrostatic skeleton cannot be used for locomotion.
c. An external skeleton must remain flexible, so it never includes calcium-
containing minerals, as bones do.
d. Endoskeletons use tendons to attach skeletal muscles to bone.
Verified Answer -d. Endoskeletons use tendons to attach skeletal muscles
to bone.
9. Which type of muscle typically surrounds hollow tubes and organs like
the stomach?
,a. smooth muscle
b. skeletal muscle
c. cardiac muscle
d. voluntary muscle
e. striated muscle
Verified Answer -a. smooth muscle
9. Skeletal muscles are
a. striated, voluntary, and have unbranched fibers.
b. striated, voluntary, and have branched fibers.
c. striated, involuntary, and have branched fibers.
d. nonstriated, voluntary, and have unbranched fibers.
e. nonstriated, involuntary, and have branched fibers.
Verified Answer -a. striated, voluntary, and have unbranched fibers.
9. Vertebrate skeletal muscles are categorized as excitable cells because
a. they can be stimulated by ATP.
b. they can be stimulated by an electric charge.
c. they can secrete neurotransmitter.
d. their membranes are excited by motor neurons, can generate and
conduct action potentials.
,e. they can attain a high level of activity.
Verified Answer -d. their membranes are excited by motor neurons, can
generate and conduct action potentials.
9. A scientist looking through a microscope at a piece of shoulder muscle
would see which of the following features?
a. striated multinucleate cells with unbranched fibers
b. striated with branched fibers
c. nonstriated with unbranched fibers
d. nonstriated with branched fibers
d. None of the answers for this question are correct.
Verified Answer -a. striated multinucleate cells with unbranched fibers
9. An apodeme is
a. an external extension of an exoskeleton.
b. an internal extension of an exoskeleton.
c. a ligament.
d. a tendon
e. a structural element of hydrostatic skeletons.
Verified Answer -b. an internal extension of an exoskeleton.
9. What is the role of calcium in muscle contractions?
*a.* to break the cross-bridges as a cofactor in the hydrolysis of ATP
, *b.* to bind with troponin, changing its shape and moving tropomyosin
so that binding sites on the actin filament are exposed
*c.* to transmit the action potential across the neuromuscular junction
*d.* to spread the action potential through the T-tubules
*e.* to re-establish the polarization of the plasma's membrane following
an action potential
Verified Answer -*b.* to bind with troponin, changing its shape and
moving tropomyosin so that binding sites on the actin filament are
exposed
9. What allows an earthworm to move through soil?
a. Antagonistic pairs of muscles that pull in opposition to one another
using elements of an endoskeleton
b. Alternating contractions of circular and longitudinal muscles that push
against elements of an endoskeleton
c. Contracting muscles attached to apodemes of an exoskeleton
d. Contractions of muscles that increase pressure on body fluids to extend
the body forward
e. Shifting of body fluids from one compartment to another
Verified Answer -d. Contractions of muscles that increase pressure on
body fluids to extend the body forward
10. Which of the following is not a function of glial cells?
a. Insulating nerve tissue
b. Orienting neurons during embryonic development
c. Conducting nerve impulses
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