Question

Which of the following striated muscles are found in bundles?
A) Smooth
B) Cardiac
C) Skeletal
D) All of the above

Answer 1

Hint: Muscles can be either striated or non-striated. They are called so because they appear to have regularly arranged lines running transversely across the muscle tissues. The function of the muscles is connected to the appearance.

 Complete answer:
The correct answer to this question is option C. Skeletal muscle is striated muscle, and is also known as voluntary muscle as we are able to control these muscles with conscious thought. These muscles are attached to bones via tendons. They are arranged in regular, compact, parallel bundles.
Cardiac muscle is also a type of striated muscle found only in the heart. It is not attached to bones. Cardiac muscle is involuntary – not under our conscious control. These muscle fibres are not arranged in bundles, but rather are branching in different directions. Option B is incorrect.
Smooth muscle is that muscle tissue that has no striations. It is found in various organs which have a central lumen like blood vessels, the urinary bladder, intestines, and the uterus. Smooth muscle is also called involuntary muscle. This is because their actions go on according to the need of the organs. The uterus will contract on its own during childbirth, the intestines will carry out peristalsis, and so on. As it is smooth, option A is incorrect.
There is a clear answer in option C, therefore D is incorrect.

Hence the correct answer is OPTION(C)

Note: Muscle tissue can increase or decrease in size depending on usage. This is however not due to cell division but an increase in the number of fibres. Muscles are said to undergo hypertrophy with increased use.