All of the following muscles insert onto metacarpal bones EXCEPT the ________
A) flexor carpi ulnaris
B) flexor carpi radialis
C) palmaris longus
D) extensor carpi radialis longus
C
Explanation:
A) The flexor carpi ulnaris inserts onto base of the fifth metacarpal bone.
B) The flexor carpi radialis inserts onto the base of the second and third metacarpal bones.
D) The extensor carpi radialis longus inserts onto the base of the second metacarpal bone.
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Spinal reflexes
A) are monosynaptic and involve only one segment of the cord. B) involve only a single segment of the spinal cord. C) always transmit information to the brain for processing. D) include both monosynaptic and polysynaptic reflexes. E) include monosynaptic reflexes only.
The nerves that supply the upper limbs enter or exit from this area of the spinal cord.
A) cervical plexuses B) cervical enlargement C) lumbar enlargement D) sacral plexuses
A subthreshold stimulus
A) produces an afterpotential. B) produces a graded (local) potential. C) causes an all-or-none response. D) produces more action potentials than a submaximal stimulus.
During isovolumetric ventricular contraction, ventricular pressure is ________.
A. decreasing B. increasing C. unchanged