Mr. Nasheed has cerebral palsy and suffers severe skeletal muscle spasms as a result of his condition. He is prescribed the drug dantrolene, which prevents the release of Ca2+ from the SR. Explain how this will treat his muscle spasms.

The function of the T tubules in muscle contraction is toa. make and store glycogen,b. release Ca²⁺ into the cell interior and then pick it up again,c. transmit the action potential deep into the muscle cells,d. form proteins.

True or false: Most muscles contain a predominance of one skeletal muscle fiber type. Explain the reasoning behind your choice.

Michael had a nervous habit of chewing on the inner lining of his lip with his front teeth. The lip grew thicker and thicker from years of continual irritation. Michael's dentist noticed his greatly thickened lip, then told him to have it checked to see if the thickening was a tumor. A biopsy revealed hyperplasia, but no evidence of neoplasia. What do these terms mean? Did Michael have cancer of the mouth?

Why are the connective tissue wrappings of skeletal muscles important? Name these connective tissue coverings, beginning with the finest and ending with the coarsest. a.

Why are the connective tissue wrappings of skeletal muscles important? Name these connective tissue coverings, beginning with the finest and ending with the coarsest. b.

Compartment syndrome can result from all of the following except (a) compressing a nerve in the wrist, (b) compartments swelling with blood due to an injury involving blood vessels, (c) torn ligaments in a given compartment, (d) pulled tendons in the muscles of a given compartment, (e) torn muscles in a particular compartment.