The tissue that is specialized for contraction and contains very large, multinucleated fibers (up to a foot or more in length) whose nuclei lie just beneath the sarcolemma is called ________.
Fill in the blank(s) with the appropriate word(s).
skeletal muscle
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Why can one say that chemical digestion begins in the mouth?
A. The teeth grind food to expose surface area for enzymatic action. B. The saliva contains lysozyme. C. The saliva contains mucus. D. The saliva contains electrolytes. E. The saliva contains amylase and lipase.
Action potentials pass from one cardiac muscle cell to another through areas of low electrical resistance called
A. sarcolemma sclerotic plaques. B. gap junctions. C. tight junctions. D. electromagnetic discs. E. fibrous heart rings.
Identify the structures innervated by the cervical plexus. Select all that apply.
a. Skin of the face b. Skin of the neck c. Upper limb d. Posterior portion of the head e. Muscles of the hyoid f. Diaphragm
When the carbonic acid-sodium bicarbonate buffer pair buffers lactic acid:
a. the amount of carbonic acid in the blood decreases b. the amount of carbonic acid in the blood increases c. the amount of bicarbonate in the blood increases d. both A and C above