The posterior roots of the spinal nerves contain the ________.
A. cell bodies of motor neurons
B. cell bodies of sensory neurons
C. axons of motor neurons
D. axons of sensory neurons
E. axons of both sensory and motor neurons
Answer: D
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The pelvic girdle does not include the ________
A) femur B) ilium C) pubis D) ischium
Extracellular messengers binding on surface receptors may exert effects on cells via all the following means, except:
a. opening gated channels. b. opening a gated channel through activation of a G protein. c. activation of the adenylyl cyclase system. d. binding to sites and then being endocytized. e. ultimately activating protein kinases.
In the cell-mediated immune response, T cells secrete ________, which activate additional components of the immune system.
A. histamine B. complement C. collagen D. cytokines E. antibodies
Hormones produced by the anterior pituitary that have a direct effect on the body, rather than trigger another gland, are __________.
A) GH, prolactin, and MSH B) TSH, ACTH, and gonadotropic hormones C) testosterone and estrogen D) FH, LSH and progesterone