The receptors that are found on all autonomic ganglionic neurons as well as at the neuromuscular synapse of the SNS are
A) muscarinic receptors.
B) nicotinic receptors.
C) delta receptors.
D) beta receptors.
E) alpha receptors.
B) nicotinic receptors.
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What prevents the simultaneous passage of sperm and urine through the male urethra?
A. Internal urethral sphincter B. External urethral sphincter C. Prepuce D. Bulbourethral gland E. Perineal raphe
In the ANS
A) motor neuron pathways synapse in the same patterns as in the somatic nervous system. B) preganglionic fibers are unmyelinated. C) there is always a synapse between the CNS motor neuron and the peripheral effector. D) preganglionic fibers innervate the peripheral organs. E) None of the answers are correct.
The left ventricular wall of the heart is thicker than the right wall in order to ________.
accommodate a greater volume of blood pump blood through a smaller valve expand the thoracic cage during diastole pump blood with greater pressure
Changes in the color of skin are often an indication of a homeostatic imbalance. Which of the following changes would suggest that a patient is suffering from Addison's disease?
A) The skin takes on a bronze or metallic appearance. B) Black-and-blue marks become evident for no apparent cause. C) It is impossible to suggest Addison's disease from an inspection of a person's skin. D) The skin appears to have an abnormal, yellowish tint.