Where are most lower motor neurons located?
A. The primary motor cortex
B. The medulla oblongata
C. The ventral horns of the spinal cord
D. The diencephalon
E. The dorsal horns of the spinal cord
Answer: C
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When a small, polar solute binds to a membrane protein that then changes shape and transports the solute across the membrane, the process is known as
A. simple diffusion. B. channel-mediated diffusion. C. carrier-mediated diffusion. D. active transport. E. endocytosis.
Which of the following is an origin of the pronator teres?
A) olecranon process of the ulna B) spine of the scapula C) epicondyle of the radius D) epicondyle of the humerus E) base of the second metacarpal
The presence of vitamin D is necessary for PTH to exert its effect on promoting intestinal Ca2+ absorption
Indicate whether the statement is true or false
Nociceptors may be either myelinated or unmyelinated, and function to carry pain sensations to the spinal cord using ________ and ________ as neurotransmitters.
A. acetylcholine; substance P B. substance P; norepinephrine C. glutamate; acetylcholine D. substance P; glutamate