The root of each tooth sits in a bony cavity known as a(n)
A) cement.
B) alveolus.
C) sulcus.
D) buccal.
E) ileum.
Answer: B
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Wrinkles in individuals are the result of
A) increased production of epidermal layers. B) loss of elastic fibers in the reticular layer of the dermis. C) increased keratinization of the epidermis. D) the loss of glands and hair follicles from the skin. E) decreased thickness of the dermis.
Resistance is calculated as
A. flow divided by pressure B. pressure divided by flow C. pressure divided by volume D. volume divided by flow E. volume divided by pressure
What structure releases the secondary oocyte during ovulation?
A) zona pellucida B) Graafian follicle C) secondary follicle D) antrum E) primary follicle
If five action potentials arrive at the same synapse in very close succession, which of the following would occur?
A. Spatial summation occurs. B. Hyperpolarization occurs. C. The direction of the action potential is reversed. D. Depolarization always occurs. E. Temporal summation occurs.