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.
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
Which of the following is the most superficial layer enclosing the heart?
A) Epicardium B) Endocardium C) Parietal pericardium D) Myocardium E) Visceral pericardium