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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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
Hypertension increases ________ causing stroke volume to ________
A) afterload; increase B) afterload; decrease C) preload; increase D) preload; decrease E) contractility; increase
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