Question

Which of the following statements about smooth muscles are TRUE?

• A. Smooth muscles are found in the walls of hollow organs
• B. Smooth muscles are controlled by the autonomic nervous system
• C. Smooth muscles are made up of non-striated cells
• D. Smooth muscles are made up of striated cells

Hint:

Smooth muscles play a crucial role in controlling involuntary movements in various organs, and they are distinct from striated skeletal and cardiac muscles.

Answer 1

The Correct Option is A, B, C

Understanding Smooth Muscles: - Smooth muscles are non-striated and involuntary muscles found in the walls of hollow organs, such as the stomach, intestines, blood vessels, and bladder. They are controlled by the autonomic nervous system (ANS), which is responsible for involuntary bodily functions.
Breakdown of the options: - (A) Smooth muscles are found in the walls of hollow organs: This is true. Smooth muscles are responsible for the movement of contents within hollow organs, like the contraction and relaxation of blood vessels and digestive organs.
- (B) Smooth muscles are controlled by the autonomic nervous system: This is true. The autonomic nervous system controls smooth muscle functions, as they are not under voluntary control.
- (C) Smooth muscles are made up of non-striated cells: This is true. Unlike skeletal muscles, smooth muscles do not have visible striations due to the arrangement of their actin and myosin filaments.
- (D) Smooth muscles are made up of striated cells: This is false. Smooth muscles do not have striations, which distinguishes them from skeletal and cardiac muscles.
Thus, the correct answer is Option (A), (B), (C).