ACh binds to ________ receptors on cardiac muscle, smooth muscle, and gland cells.
Fill in the blank(s) with the appropriate word(s).
muscarinic
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From superficial to deep, the three layers of the meninges are
A) dura mater - pia mater - arachnoid mater B) dura mater - arachnoid mater - pia mater C) pia mater - dura mater - arachnoid mater D) pia mater - arachnoid mater - dura mater
What is the role of vitamin A in bone deposition?
A. It provides the raw material for calcification of the ground substance. B. It promotes the cross-linking of collagen molecules. C. It is necessary for calcium absorption by the small intestine. D. It promotes the synthesis of bone matrix glycosaminoglycans (GAGs). E. It stimulates osteoblast activity.
In evolutionary terms, the most ancient part of the brain is the
a. brain stem. b. cerebellum. c. diencephalons. d. cerebrum. e. basal nuclei.
The small intestine has three histologically dictinct regions. Which of the following statements concerning the histological differences in the three regions is true?
(a) Peyer's patches are present only in the ileum (b) goblet cells are present only in the epithelium of the duodenum (c) Brunner glands are located in the duodenum and jejunum but not the ileum (d) lymph follicles are present only in the lamina proprial of the ileum (e) the muscularis muscosae contains three layers of smooth muscle in the ileum and two layers in the duodenum and jejunum.