Which of the following structures contains only sensory axons that conduct nerve impulses from sensory receptors in the skin, muscles and internal organs to the CNS?
a) Spinal nerves
b) Cauda equina
c) Anterior root of spinal nerves
d) Posterior root of spinal nerves
e) Conus medullaris
d
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The concentration gradient for Na+
a. favors its movement into the cell at resting potential. b. favors its movement out of the cell at resting potential. c. is maintained by the Na+-K+ pump. d. both (a) and (c) above. e. both (b) and (c) above.
The ________ separates the cerebrum from the cerebellum.
A. transverse fissure B. central sulcus C. longitudinal fissure D. lateral sulcus
Receptor-mediated endocytosis removes _______ from plasma, supplying cholesterol for the body.
A. triglycerides B. LDL C. HDL D. VLDL
Polycythemia often occurs in those who live at high altitudes
Indicate whether the statement is true or false