The neurotransmitter __________ plays the key role in generating an erection in the mammalian penis
A) Acetylcholine
B) Dopamine
C) GABA
D) Nitric oxide
Fill in the blank with the correct answer.
Answer: D
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The two collecting ducts that drain the lymphatic trunks are the
A. thoracic duct and right lymphatic duct. B. lumbar duct and left lymphatic duct. C. bronchomediastinal duct and subclavian duct. D. intestinal duct and left intercostal duct.
Secondary polycythemia is an appropriate erythropoietin-induced adaptive mechanism to improve the blood's O2-carrying capacity in response to a prolonged reduction in O2 delivery to the tissues
a. True b. False Indicate whether the statement is true or false
Sympathetic fibers arise only from the ________ region(s) of the spinal cord.
A. thoracic B. lumbar C. thoracic and lumbar D. cervical E. cervical, thoracic, and lumbar
What does structure "B" represent on the diagram?
A. Bursa B. Articular cartilage C. Tendon D. Fibrous capsule E. Synovial membrane