When cats fight, their fur rises due to which mechanism?
A. Secretion of sebum into hair follicles
B. Myoepithelial cell syneresis
C. Arrector muscle contraction
D. Increased blood flow to the skin
E. Stimulation of apocrine glands
Answer: C
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The pituitary hormone that stimulates the interstitial endocrine cells to secrete testosterone is
A) FSH. B) LH. C) ACTH. D) GnRH. E) GH.
Explain the events leading up to a skeletal muscle twitch, starting with the arrival of neurotransmitter in the neuromuscular junction.
What will be an ideal response?
When innate immunity is activated,
A. each exposure is very specific. B. previous exposures are remembered. C. each exposure produces the same response. D. each exposure increases the strength of the immune response. E. the second exposure does not produce a response.
What type of cartilage is found in the pinna of the ear and in the epiglottis of the throat?
A. Hyaline cartilage B. Fibroelastic cartilage C. Fibrocartilage D. Elastic cartilage