Bacteria infecting the mucous membranes in the air cells of the mastoid process most
likely spread from the
A) meninges. B) maxillary sinus.
C) frontal sinus. D) middle ear.
D
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Interneurons of the corticospinal tract synapse onto
A) somatic efferents. B) visceral efferents. C) interneurons of central pattern generators.
The internal environment consists of the ____________________, which is made up of ____________________; the fluid portion of the blood; and ____________________, which surrounds and bathes all cells
Fill in the blank(s) with correct word
In regeneration
A) a new type of tissue develops causing the loss of some function. B) new cells of a different tissue develop and normal function is restored. C) new cells of the same type are created and normal function is usually restored. D) the damaged cells repair themselves perfectly, restoring function. E) viable cells are replaced by dead cells.
Which of the following is a function of the heart skeleton?
A. Provides electrical insulation between the atria and ventricles. B. Supplies support and reinforcement for the valves. C. Provides a rigid site for cardiac muscle attachment. D. All of the choices are functions of the heart skeleton.