In a myelinated fiber, only the initial segment in the trigger zone has voltage-regulated channels
Indicate whether the statement is true or false
FALSE
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Which of the following structures is(are) produced from the endoderm?
a) Cartilage b) Dermis of the skin c) Kidneys and ureters d) Internal and external ear e) Gametes
During the later part of fetal development, the testes descend into the scrotum through the
A. ejaculatory duct. B. epididymis. C. ureters. D. inguinal canal. E. urethra.
You step on a sharp pin. What pathway does the pain signal follow?
A. Spinothalamic tract; thalamus; cerebral cortex B. Cuneate fasciculus; medulla oblongata; thalamus; cerebral cortex C. Gracile fasciculus; medulla oblongata; cerebral cortex D. Dorsal spinocerebellar tract; cerebellum E. Cerebral cortex; lower motor neuron; ventral horn
The highly branched contractile cells that regulate capillary permeability are called
A) endothelial cells. B) podocytes. C) pericytes. D) vascular smooth muscle. E) epitheliocytes.