Digestion occurs mainly in which of the following structures?
(A) cecum and ascending colon
(B) transverse colon
(C) stomach and duodenum
(D) jejunum and ileum
(E) transverse and sigmoid colon
Answer: (C) stomach and duodenum
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The cells that are formed during spermatogenesis by the first meiosis are called
Fill in the blank(s) with the appropriate word(s).
The adrenal cortex
A. is derived from neural crest cells. B. is considered part of the sympathetic division of the autonomic nervous system. C. secretes epinephrine. D. is derived from mesoderm.
Motor neurons and interneurons are ______________ neurons.
A) unipolar B) bipolar C) multipolar D) afferent
Following an injury, chemicals are released or activated in the injured tissues. These chemicals, called mediators of inflammation, include
A) histamine. B) neutrophils. C) prostaglandins. D) pus. E) Both histamine and prostaglandins are mediators of inflammation.