In response to a tendon being stretched excessively, a tendon organ initiates a somatic spinal reflex that causes
1
contraction of the agonist muscle.
2. relaxation of the antagonist muscle.
3. contraction of the antagonist muscle.
4. relaxation of the agonist muscle.
a) 1 only
b) 2 only
c) 3 only
d) 4 only
e) 3 and 4
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Question 2) Increasing the number of active motor units within a skeletal muscle is called
a) wave summation.
b) fused tetanus.
c) motor unit recruitment.
d) muscle tone.
e) flaccidity.
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Question 3) Which of the following statements correctly compares water-soluble hormones with lipid-soluble hormones?
a) Both types of hormone are carried in the blood attached to a carrier protein.
b) Both types of hormone almost always stimulate increases in mRNA transcription.
c) Only water-soluble hormones use second messengers.
d) Only water-soluble hormones require a receptor.
e) Lipid-soluble hormones are not found in the bloodstream.
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Question 4) Which ganglia contain the cell bodies of the parasympathetic postganglionic neurons that serve the parotid salivary glands?
a) Ciliary ganglia
b) Pterygopalatine ganglia
c) Submandibular ganglia
d) Otic ganglia
e) None of these choices
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Question 5) The hematocrit is a measure of the percentage of whole blood occupied by
a) WBCs.
b) platelets.
c) RBCs.
d) plasma.
e) plasma proteins.
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Question 6) In the diagram, where is the nutrient artery?
a) D
b) E
c) F
d) G
e) H
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Question 7) This type of neural circuit consists of a single presynaptic neuron synapsing with several postsynaptic neurons.
a) Diverging circuit
b) Converging circuit
c) Reverberating circuit
d) Parallel after-discharge circuit
e) Normal circuit
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Question 8) The medial and lateral condyles of the femur fit into what part of the patella?
a) Articular facets
b) Base of the patella
c) Tibiofemoral crest
d) Apex of the patella
e) None of these choices are correct.
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Question 9) Where is the external oblique?
a) D
b) G
c) H
d) I
e) E
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Question 10) The main function of muscle spindles is
a) to sense tension applied to a tendon.
b) to sense referred pain.
c) to perceive cutaneous sensations.
d) to sense changes in muscle length.
e) to sense muscle fatigue.
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