The chemicals secreted by endocrine glands are called ________.
Fill in the blank(s) with the appropriate word(s).
hormones
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A hormone that helps to regulate the sodium ion content of the body is
A) cortisol. B) parathormone. C) thymosin. D) somatotropin. E) aldosterone.
Which of the following does NOT describe a multicellular exocrine gland?
A. tubular glands. B. alveolar glands. C. hormone glands. D. simple glands.
Which best describes a "myofibril"?
A. It is composed of a single type of protein and forms cross-bridges. B. It is a cylindrical cellular organelle composed of myofilaments. C. It is a single skeletal muscle cell. D. It is a fibrous junction between a muscle cell and a tendon. E. It is a hollow membranous structure that stores calcium.
Nutrient absorption occurs primarily in the
A) small intestine. B) large intestine. C) liver. D) stomach and small intestine. E) stomach.