Glands that secrete products directly into the blood are
A. goblet glands.
B. plasma glands.
C. endocrine glands.
D. exocrine glands.
Answer: C
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The coronary arteries supply blood to the ____
a. heart b. lungs c. kidneys d. liver
A local hyperpolarization that makes the membrane potential of the postsynaptic neuron more negative is:
A) a temporal stimulus. B) an excitatory postsynaptic potential (EPSP). C) an inhibitory postsynaptic potential (IPSP). D) a saltatory stimulus.
Describe the functional groups that are considered acidic or basic
A) An amino group acts as a base because it can accept hydrogen ions, and a carboxyl group acts as an acid because it releases a hydrogen ion. B) An amino group acts as a base because it releases a hydrogen ion, and a carboxyl group acts as an acid because it can accept hydrogen ions. C) A phosphate group acts as a base because it can accept hydrogen ions, and a hydroxyl group acts as an acid because it releases a hydrogen ion. D) A phosphate group acts as an acid because it can accept hydrogen ions, and a hydroxyl group acts as a base because it releases a hydrogen ion. E) Phosphate groups can act as an acid or a base depending on the pH of the surrounding solution.
The submandibular duct opens:
a. in the oral vestibule near the lower 2nd molar b. at the end of the lingual frenulum c. in multiple sites along lingual frenulum d. at the angle of the mandible