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Chapter 4: Problem 15

Skeletal muscle is a. striated. b. under voluntary control. c. multinucleated. d. All of these are correct.

Short Answer

Expert verified
Skeletal muscle is striated, under voluntary control, and multinucleated. Therefore, the correct answer is \(d. All\text{ }of\text{ }these\text{ }are\text{ }correct\).

Step by step solution

01

Determine if skeletal muscle is striated

Skeletal muscle is indeed striated, meaning it has a pattern of light and dark bands, formed by the arrangement of actin and myosin filaments. This structured appearance allows the muscle to contract and generate force. So, option 'a' is correct.
02

Determine if skeletal muscle is under voluntary control

Skeletal muscle is under voluntary control. It means that one can consciously control these muscles to perform actions like walking, talking, lifting objects, etc. So, option 'b' is correct.
03

Determine if skeletal muscle is multinucleated

Skeletal muscle cells are multinucleated, meaning they have multiple nuclei per cell. This happens because skeletal muscle cells are formed by the fusion of multiple myoblasts. The presence of multiple nuclei enables more efficient muscle function and protein synthesis. So, option 'c' is correct.
04

Verify if all the given statements are correct

From steps 1 to 3, we have determined that skeletal muscle is striated, under voluntary control, and multinucleated. Therefore, option 'd' must be correct, as all of these characteristics apply to skeletal muscle. In conclusion, the correct answer is: d. All of these are correct.

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