D cells in the islet of Langerhans secrete _________.
A) pancreatic polypeptide.
B) amylin.
C) glucagon.
D) insulin.
E) somatostatin.
E) somatostatin.
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Which of the following pancreatic enzymes contributes to carbohydrate digestion?
a. amylase b. chitinase c. carboxypeptidase d. amylase and chitinase e. all of these
The extracellular matrix of cartilage, unlike that of most connective tissues, has unusually abun-dant molecules of:
a. Keratin b. Type I collagen c. Type III collagen d. Type IV collagen e. Water
The catecholamines norepinephrine and epinephrine are secreted by:
a. Beta cells of the islets of Langerhans b. Basophil cells of the anterior pituitary gland c. Chief cells of the parathyroid gland d. Chromaffin cells of the adrenal medulla e. Pituicytes of the posterior pituitary gland
This figure shows the muscles that move the tongue. What muscle does number 3 indicate?
A. Hyoglossus B. Palatoglossus C. Stylohyoid D. Styloglossus E. Genioglossus