Which of the following generates and transmits nerve impulses that arouse the cerebrum to wakefulness?
A. Reticular formation
B. Thalamus
C. Limbic system
D. Epithalamus
Answer: A
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Which of the following is true about smooth muscle contraction?
A) Certain smooth muscle cells can actually divide to increase their numbers. B) Smooth muscle, in contrast to skeletal muscle, cannot synthesize or secrete any connective tissue elements. C) Smooth muscle cannot stretch as much as skeletal muscle. D) Smooth muscle has well-developed T tubules at the site of invagination.
Which of the labeled structures in the diagram of the trigeminothalamic pathway is the first-order neuron?
a) A b) B c) C d) D e) E
Which of the following is NOT a component of saliva?
A. Water B. The enzyme salivary amylase C. Hydrochloric acid D. Mucus
It has been reported that King Henry VIII of England divorced his wives because they were unable to produce a male heir to the throne. Some say the lack of a male heir is also used as justification for marrying additional wives in polygamous societies. From a genetics standpoint, what is wrong with these assumptions?
What will be an ideal response?