Excitation of the Golgi tendon organ normally causes ________.
A. relaxation of a muscle's intrafusal fibers
B. contraction of a muscle's intrafusal fibers
C. contraction of a muscle's extrafusal fibers
D. relaxation of a muscle's extrafusal fibers
Answer: D
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Hypertension increases ________ causing stroke volume to ________
A) afterload; increase B) afterload; decrease C) preload; increase D) preload; decrease E) contractility; increase
All of the anterior muscles of the forearm, except one, have their proximal attachment on the medial epicondyle of the humerus via a common flexor tendon. Select the exception.
A. Flexor carpi radialis B. Flexor digitorum superficialis C. Flexor pollicis longus D. Flexor carpi ulnaris E. Palmaris longus
The volume of blood pumped by each ventricle in one heartbeat is known as:
A) end-diastolic volume (EDV). B) heart rate (HR). C) cardiac output (CO). D) stroke volume (SV).
Which characteristic of a vestibular hair cell is NOT a characteristic of an auditory hair cell?
A. synaptic vesicles B. energy transduction C. directional sensitivity D. axon E. kinocilium