A Unique Feature of the Diaphragm is That It Is_____

Question

A unique feature of the diaphragm is that it is_____.
A) the only smooth muscle in the human body
B) the only smooth muscle that can be voluntarily controlled
C) only found in humans
D) the only skeletal muscle that is under involuntary control
E) easily replaceable

Accepted Answer

The diaphragm is a skeletal muscle that is primarily under involuntary control, meaning it operates automatically to control breathing. Unlike other skeletal muscles, which are typically under voluntary control, the diaphragm functions without conscious effort, although its action can be influenced by voluntary breathing exercises. This makes it unique among skeletal muscles.