When body temperature increases above the normal range, thermoreceptors in the skin and hypothalamus detect the increase in body temperature. The heat-loss center of the hypothalamus is activated, which sends signals to blood vessels and sweat glands. In
response, blood vessels in the skin dilate and sweat glands release sweat. Determine the part of this negative feedback loop that serves as the effector(s).
A) hypothalamus B) thermoreceptors
C) blood vessels and sweat glands D) body temperature
Answer: C
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1) The ethmoid bone is a light spongy bone that forms much of the inner structure of the nose and attaches to the falx cerebri. 2) The temporal bone contains the foramen magnum and forms part of the wall of the jugular foramen. 3) The structures that supports the head on the vertebral column are the occipital condyles. 4) The opening that permits sounds to reach the middle ear cavity is called the internal acoustic meatus. 5) The sacrum is actually the result of five fused sacral vertebrae.
Which of the following structures secrets hormone renin?
a. Peritubular capillaries b. Glomerular capillaries c. Nephronic tubules d. Juxtaglomerular apparatus e. Bowman's capsule
__________ are located in the walls of the stomach and small intestine.
A) Skeletal muscle cells B) Cardiac muscle cells C) Smooth muscle cells D) Both skeletal and cardiac muscle cells E) Both cardiac and smooth muscle cells
All of the following glands are both endocrine and exocrine except
A. the ovaries. B. the testes. C. the adrenal glands. D. the pancreas. E. All of these glands are both endocrine and exocrine.