Which of the following stimulus parameters is NOT encoded in the pattern of action potentials in a sensory axon?

A. threshold
B. frequency
C. modality
D. duration
E. intensity


ANS: C

Anatomy & Physiology

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Both the nucleus and the mitochondrion are surrounded by a two layer membrane.

Answer the following statement true (T) or false (F)

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Which lymphatic structures absorb dietary lipids that cannot be absorbed by intestinal blood capillaries?

A. Abdominal lymph nodes B. Cisterna chyli C. Lacteals D. Spleen E. Thoracic duct

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During a cross-bridge cycle in skeletal muscle,

a. the cross bridge is energized when it splits ATP into ADP and P b. the cross bridge must bind with ATPase before a power stroke will occur c. Ca2+ causes tropomyosin to move off of the myosin's actin-binding sites d. ADP binds to the cross bridge at the end of the power stroke e. both a and b occur

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The choroid plexus originates in the

A. dura mater. B. arachnoid. C. pia mater. D. None of the above

Anatomy & Physiology