Blood capillaries that supply nourishment for the epidermis are located in the
A. dermal papillae.
B. epidermal ridges.
C. reticular connective tissue.
D. epidermis proper.
E. subcutaneous layer.
A
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If the atlas and axis were replaced with typical cervical vertebrae, ________ would be affected.
A. protection of the spinal cord B. the ability to pivot the head from side to side C. stability of the cervical intervertebral disks D. the ability to move the arms
Frank is experiencing difficulty urinating, painful urination, low back pain and a slight fever. The doctor prescribes antibiotics and Frank recovers. It is likely that Frank suffered from
A) impotence. B) prostate cancer. C) prostatitis. D) a vasectomy. E) a circumcision.
Two factors that are used to determine the classification of a skeletal muscle are
(1) the arrangement of the muscle fibers. (2) the structural arrangement by which the muscles attach to the skeleton. (3) the overall size of the muscle. (4) the amount of connective tissue present within the muscle. (5) the number of tendons connected to the muscle. A) 4 and 5 B) 3 and 4 C) 2 and 3 D) 1 and 3 E) 1 and 2
Why does rigor mortis result in muscular rigidity after death?
A. The enzyme that hydrolyzes ATP is no longer being produced; therefore, the myosin heads will not receive the actin filament. B. The ATP necessary to bind to the myosin head and release the cross bridge is no longer present. C. ATP production is no longer possible; therefore, cross bridges cannot be formed. D. A buildup of intracellular calcium keeps the troponin molecule free of the active site on actin.