When cats fight, their fur rises due to which mechanism?
A. Myoepithelial cell syneresis
B. Piloerector muscle contraction
C. Secretion of sebum into hair follicles
D. Increased blood flow to the skin
E. Stimulation of apocrine glands
B. Piloerector muscle contraction
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The two lobes of the thyroid gland are connected by the
A) isthmus. B) pars intermedia. C) commissure. D) aqueduct. E) infundibulum.
Lacteals
A. are found only in the large intestine. B. absorb the products of fat digestion. C. secrete intestinal juice. D. connect directly to the liver. E. All of the choices are correct.
Match the following:
A) Conducting region B) Secretory region C) Trigger zone E) Secretory zone E) Secretory zone 1) Area where nerve impulse is generated. 2) Receives stimuli. 3) Plasma membrane exhibits voltage-gated Na+ and K+ channels. 4) Plasma membrane exhibits voltage-gated Ca2+ channels. 5) Axon terminals release neurotransmitters. 6) Plasma membrane exhibits chemically gated ion channels.
An immune attack against the body's own tissues results in a/an ________ disease.
Fill in the blank(s) with the appropriate word(s).