The muscle shape that has the capacity to shorten to the greatest degree is ________.
A. multipennate
B. orbicular
C. unipennate
D. straight
E. pennate
Answer: D
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Serotonin
A. is a catecholamine neurotransmitter. B. acts as a neuromodulator. C. has an inhibitory effect on pathways that are involved in the control of muscles. D. has an excitatory effect on pathways that mediate sensations. E. is a neuropeptide.
Which of the following is the most superficial layer enclosing the heart?
A) Epicardium B) Endocardium C) Parietal pericardium D) Myocardium E) Visceral pericardium
The transition between the ________ and the ________ phases of the uterine cycle coincides with ________.
A. secretory; proliferative; selection of the dominant follicle B. proliferative; secretory; ovulation C. follicular; luteal; a rise in basal body temperature D. menstrual; proliferative; ovulation E. proliferative; secretory; menstruation
Moving your jaw forward, causing an underbite, is called ________
A) pronation B) retraction C) adduction D) protraction