During exercise, ventilation initially increases due to
A. abrupt changes in metabolism or blood gases.
B. limb movements that stimulate the respiratory center.
C. increased blood CO2 levels, stimulating baroreceptors.
D. decreased blood O2 levels, stimulating chemoreceptors.
E. decreased blood pH levels, stimulating baroreceptors.
Answer: B
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During a lab practical, Kevin examines a tissue that is composed of densely packed protein fibers that are running parallel and form a cord. There are few nuclei and no striations, and there is no evidence of other cellular structures. Kevin identifies the tissue as skeletal muscle. Why is Kevin's choice wrong, and what tissue is he probably observing?
What will be an ideal response?
The greater the number of muscle fibers in each motor unit,
A) the longer each contraction will last. B) the slower the contraction of the muscle will be. C) the greater the number of stimuli required to produce a contraction. D) the less precise the control will be. E) None of the answers are correct.
Define the underlined terms in the following case study. A 22-year-old pony of Americas with two front half heels presented to the clinic with a suspected case of equine encephalomyelitis. Upon examination, the attending veterinarian noted an overall flighty nature, as well as unrelated bishoping
What will be an ideal response?
The outermost connective tissue covering of a nerve is called the ________
A) endoneurium B) perineurium C) epineurium