Question

48. After receiving a stimulus from a nerve cell the sarcoplasmic reticulum of the muscle fiber releases which of the following ions to allow the protein filaments to slide over one another causing muscle cell contraction. a. sodium b. calcium c. potassium d. magnesium 49. Which of the following characteristics is not a characteristic of muscle? a. excitability b. contractility c. extensibility e. none of the above (all are characteristics of muscle) d. elasticity 50. Muscle cells are grouped together in bundles termed fascicles with each fascicle being surrounded by a connective tissue layer known as the: a. perimysium b. endomysium c. epimysium d. intramysium 51. Volkmann's canals, canaliculi, and lacunae are all terms associated with: a. muscle b. bone 52. Visceral muscle is known as: a. smooth muscle b. striated muscle c. cardiac muscle 53. A motor unit might be composed of a single neuron that stimulates thousands of muscle fibers. a. true b. false

          48. After receiving a stimulus from a nerve cell the sarcoplasmic reticulum of the
muscle fiber releases which of the following ions to allow the protein filaments to
slide over one another causing muscle cell contraction.
a. sodium b. calcium c. potassium
d. magnesium
49. Which of the following characteristics is not a characteristic of muscle?
a. excitability
b. contractility c. extensibility
e. none of the above (all are characteristics of muscle)
d. elasticity
50. Muscle cells are grouped together in bundles termed fascicles with each
fascicle being surrounded by a connective tissue layer known as the:
a. perimysium
b. endomysium
c. epimysium
d. intramysium
51. Volkmann's canals, canaliculi, and lacunae are all terms associated with:
a. muscle
b. bone
52. Visceral muscle is known as:
a. smooth muscle b. striated muscle c. cardiac muscle
53. A motor unit might be composed of a single neuron that stimulates thousands of
muscle fibers.
a. true
b. false

48. After receiving a stimulus from a nerve cell the sarcoplasmic reticulum of the
muscle fiber releases which of the following ions to allow the protein filaments to
slide over one another causing muscle cell contraction.
a. sodium b. calcium c. potassium
d. magnesium
49. Which of the following characteristics is not a characteristic of muscle?
a. excitability
b. contractility c. extensibility
e. none of the above (all are characteristics of muscle)
d. elasticity
50. Muscle cells are grouped together in bundles termed fascicles with each
fascicle being surrounded by a connective tissue layer known as the:
a. perimysium
b. endomysium
c. epimysium
d. intramysium
51. Volkmann's canals, canaliculi, and lacunae are all terms associated with:
a. muscle
b. bone
52. Visceral muscle is known as:
a. smooth muscle b. striated muscle c. cardiac muscle
53. A motor unit might be composed of a single neuron that stimulates thousands of
muscle fibers.
a. true
b. false

Added by Heidi G.

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