Ammonia is
A. processed by the liver to form urea, a less toxic compound.
B. a waste product of fatty acid metabolism and is excreted by the kidneys into urine.
C. a polypeptide containing many amino acids.
D. exhaled by the lungs into the air.
E. a waste product of fatty acid metabolism.
Answer: A
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Receptors
a. generate action potentials in afferent fibers in response to stimuli. b. change other forms of energy into electrical energy. c. are located in the dorsal root ganglion. d. both (a) and (b) above. e. all of these answers.
Which of these muscles is located on the ventral (anterior) side of the body?
A) pectoralis major B) occipitalis C) gastrocnemius D) gluteus medius E) latissimus dorsi
Which of the following statements is false or incorrect?
A) Cardiac muscle contracts when stimulated by its own autorhythmic muscle cells. B) Under normal resting conditions, cardiac muscle tissue contracts and relaxes about 75 times per minute. C) Cardiac muscle fibers depend mostly on anaerobic cellular respiration to generate ATP. D) Cardiac muscle fibers can use lactic acid to make ATP.
Most people's core temperature varies by about ____?F
a. 0.6 b. 1.8 c. 2.6 d. 4.0 e. 5.2