The membrane that lines passageways that open to the exterior environment is called __________.
A. the lamina propria
B. endothelium
C. a synovial membrane
D. a serous membrane (serosa)
E. a mucous membrane (mucosa)
E. a mucous membrane (mucosa)
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Which neurotransmitter is released at the gland by the preganglionic neuron in the diagram?
a) Norepinephrine b) Acetylcholine c) Epinephrine d) Dopamine e) Serotonin
Llamas, which have three stomach compartments unlike the four in cattle, sheep, and goats, are called ________________________________________
Fill in the blank(s) with correct word
A blood clot that forms abnormally in a blood vessel is a(n)
A) thrombus. B) platelet plug. C) embolus. D) aneurysm.
One motor neuron, plus all the muscle fibers it innervates, is known as a(n):
a. nerve bundle b. motor unit c. activated component d. cross bridge e. functional unit