When peptides and catecholamines bind to the target cell, how do they stimulate its physiology?
a) through lysosomal enzymes
b) through DNA transcription
c) through gene activation
d) through second messenger systems
Answer: d) through second messenger systems
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What is the function of Golgi tendon organs?
A. They detect the angle of joints, and thus provide proprioceptive inputs about the position of the limbs in space. B. They detect stretch within tendons and inhibit the activation of alpha motor neurons to extrafusal muscle fibers in antagonistic muscles. C. They detect stretch within tendons and inhibit the activation of alpha motor neurons to extrafusal muscle fibers in the muscle attached to those tendons. D. They detect painful stimuli within tendons and inhibit gamma motor neurons to intrafusal muscle fibers in muscles attached to those tendons. E. They stimulate the ends of intrafusal muscle fibers, ensuring that sensory information about muscle length is provided, even when a muscle shortens rapidly.
The vaginal fornix:
A) surrounds the vaginal part of the cervix. B) contains the ovaries. C) is part of the broad ligament. D) is the inferior part of the rectouterine pouch. E) is the recess between the external urethral and vagina orifices.
The alveolar ventilation rate is the best index of effective ventilation
Indicate whether the statement is true or false
What internal body temperature is considered the upper limit compatible with life?
a. 104°F b. 106°F c. 108°F d. 110°F e. 112°F