Structure S is the
A) nasolacrimal duct.
B) lacrimal pore.
C) lacrimal sac.
D) lacrimal gland.
E) lacrimal canal.
C) lacrimal sac.
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The primary function of adrenocorticotropic hormone (ACTH) is to
A. regulate salt and water balance by acting on the renal system. B. stimulate glucocorticoid release from the adrenal glands. C. stimulate adrenaline release from the adrenal medulla. D. stimulate cell growth and cell division in muscle and bone. E. stimulate the development of the folds on the surface of the brain.
In the case of severe blood loss, additional sites in which red blood cells can be formed arise because ________ can change into red bone marrow.
Fill in the blank(s) with the appropriate word(s).
The sympathetic nervous system
a. is always excitatory for smooth muscle b. innervates only tissues concerned with protecting the body against challenges from the outside environment c. dominates in rest-and-digest situations d. contains cholinergic and adrenergic fibers e. stimulates only effectors that are dually innervated
The plane that goes from top to bottom, which divides the body in left and right sides directly in the middle is referred to as which of the following?
a. Sagittal. b. Frontal. c. Transverse. d. Midsagittal.