Download Quiz #5

PALOMAR COLLEGE
Life Sciences Department
Introduction to Anatomy & Physiology (Zoo145); Instructor: Elmar Schmid, Ph.D.
QUIZ #5
- Muscular System I 
Answer the following questions and mark it on a Scantron 882 answer sheet. All questions
must be answered by the student without help by class mates, friends or other human
beings. Please read the following statement below carefully and sign it if you satisfy the
guidelines outlined in this statement. This signed take home exercise sheet must be turned
in with your answer sheet to receive full credit for this assignment. This assignment is due at
the first class meeting the following week.

I HAVE ANSWERED THE QUESTIONS IN THIS EXERCISE ON MY OWN. I DID NOT CONSULT OTHERS OR
IN ANY CONDUCT IN ANY ACTIVITITES THAT COULD BE CONSTRUED AS CHEATING IN THIS
ASSIGNMENT. I DID NOT MAKE ANY COPIES OF THIS ASSIGNMENT.
_________________________________
(PRINT YOUR NAME)
________________________________
(YOUR SIGNATURE)
Q. 1: Which of the following is NOT a function of muscle tissue?
A) Heat production
B) Regulation of organ volume, e.g. lungs
C) Vitamin D production
D) Body movements
E) Body position
Q. 2: The cardiac muscle tissue is striated and only found in the heart
A) true
B) false
Q. 3: The type of muscle tissue which is located in the walls of blood vessels and airways is called:
A) striated skeletal muscle
B) striated cardiac muscle
C) non-striated cardiac muscle
D) smooth muscle
E) flight muscle
Q. 4: There are three types of muscle tissue in the human body which are skeletal, cardiac and
smooth muscle.
A) true
B) false
Q. 5: The connective tissue layer which helps to hold each individual muscle fiber together is called:
A) collagen
B) epimysium
C) endomysium
D) deep fascia
E) fascicle
Q. 6: The connective tissue sheet which surrounds bundles of 10 – 100 muscle fibers is called:
A) periosteum
B) epimysium
C) perimysium
D) fasicle
E) sarcolemma
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PALOMAR COLLEGE
Life Sciences Department
Introduction to Anatomy & Physiology (Zoo145); Instructor: Elmar Schmid, Ph.D.
Q. 7: The deep, tunnel-like infoldings of the cell membrane of a muscle cell called:
A) sarcoplasmic reticulum
B) sarcolemma
C) T-tubules
D) myofibril
E) cisternae
Q. 8: The reddish-colored pigment located in high concentration in the sarcoplasm of a muscle fiber
which has storage function is called:
A) hemoglobin
B) immunoglobin
C) keratin
D) myoglobin
Q. 9: The primary function of the myoglobin molecule of muscles is the storage of ATP within the
muscle.
A) True
B) False
Q. 10: The protein which makes up the thick filament of the sarcomere is called:
A) myoglobin
B) myosin
C) actin
D) keratin
E) troponin
Q. 11: Which of the following proteins is not a component of the thin filament of a typical muscle
sarcomere?
A) actin
B) troponin
C) tropomyosin
D) myosin
E) all of them are necessary for the build-up of a thin filament
Q. 12: During muscle contraction the ____ filaments slide past the ____ filaments, as a consequence
of the conformational movement of the heads of the ________ protein.
A) thick … thin … myosin
B) thick … thin … troponin
C) thin … thick … myosin
D) thin … thick … troponin
E) Z disc … thick … troponin
Q. 13: The sarcomere is the area between two
A) I bands
B) A bands
C) H zones
D) Z discs
E) B lines
Q. 14: The nerve cell which is in contact with a unit of muscle fibers and triggers the processes
leading to muscle contraction is called:
A) motor neuron
B) axon
C) glial cell
D) Schwann cell
E) none of the above
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PALOMAR COLLEGE
Life Sciences Department
Introduction to Anatomy & Physiology (Zoo145); Instructor: Elmar Schmid, Ph.D.
Q. 15: The neurotransmitter released at the neuromuscular junction is
A) adrenaline
B) acetylcholine
C) glutamine
D) GABA
E) serotonin
Q. 16: Tunnel-like extensions of the sarcolemma into the muscle fiber are
A) sarcomeres
B) myofibrils
C) transverse (or T) tubules
D) tropomyosin
E) synaptic cleft
Q. 17: After activation of the Ach receptor at the motor end plate of the muscle, a muscle action
potential is triggered due to the influx of ________ ions into the muscle fiber.
A) sodium
B) potassium
C) calcium
D) chlorine
E) adrenaline
Q. 18: The bacteria-derived botulinum toxin which is widely used in the currently very fashionable
anti-wrinkle Botox therapy prevents which of the following events at the neuromuscular junction
(NMJ)?
A) the synthesis of acetylcholine
B) the release of acetylcholine from the motor neuron
C) the degradation of acetylcholine in the synaptic cleft
D) the generation of muscle action potentials in the motoric endplate
E) the influx of calcium into the muscle cells
Q. 19: Which of the following substances is/are absolutely necessary for muscle contraction?
A) calcium
B) ATP
C) potassium
D) sodium
E) all of the above
Q. 20: Muscle fatigue can be caused by which of the following?
A) lack of oxygen
B) build-up of lactic acid
C) build-up of ADP in the myocyte
D) depletion of phosphocreatine
E) any of the above
Bonus Q. 1: Which of the following molecules if the reserve molecule for (ATP) energy in muscle
cells?
A) ADP
B) acetylcholine
C) phosphocreatine
D) glucose
E) fructose
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PALOMAR COLLEGE
Life Sciences Department
Introduction to Anatomy & Physiology (Zoo145); Instructor: Elmar Schmid, Ph.D.
Bonus Q. 2: A marathon runner would rely primarily on which of the following muscle fiber types
to complete the arduous Boston marathon?
A) Slow oxidative fibers
B) Fast oxidative fibers
C) Glycolytic fiber
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