________ nephrons are essential to water conservation and the production of concentrated urine
A) Cortical
B) Juxtamedullary
C) Both Cortical and Juxtamedullary nephrons
D) Neither Cortical nor Juxtamedullary nephrons, as only collecting tubules conserve water.
Answer: B
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The superior cerebellar peduncles connect the pons to the cerebellum.
Answer the following statement true (T) or false (F)
Smooth muscle
A) does not use calcium. B) is not resistant to fatigue. C) contracts faster than skeletal muscle. D) does not undergo tetanus. E) uses primarily aerobic metabolism.
In von Willebrand disease, which is either autosomal recessive or autosomal dominant,
clotting time slows and the person bruises and bleeds easily. Not everyone who inherits the disease genotype actually develops the phenotype. Affected individuals have differing degrees of difficulty in clotting of blood. This condition is A) incompletely penetrant, variably expressive, and genetically heterogeneic. B) completely penetrant, invariably expressive, and not genetically heterogeneic. C) pleiotropic and genetically heterogeneic D) completely penetrant, variably expressive, and not genetically heterogeneic.
Which of the following types of drugs would inhibit spontaneous emptying of the bladder (incontinence)?
A. drugs that enhance the effects of parasympathetic neurons on the detrusor muscle B. drugs that block the effects of parasympathetic neurons on the detrusor muscle C. drugs that inhibit the effects of sympathetic neurons on the internal urethral sphincter D. drugs that inhibit the effects of somatic neurons on the bladder E. drugs that inhibit the action of sympathetic neurons on the external urethral sphincter