Which of the following muscles is found in the walls of organs?

A) skeletal
B) smooth
C) voluntary
D) cardiac

Smooth muscles are found in the walls of organs such as the stomach, intestines, bladder, and blood vessels. Skeletal muscles are attached to bones and are responsible for body movements. Cardiac muscles are found in the heart and are responsible for its rhythmic contractions. Voluntary muscles are under conscious control, mainly referring to skeletal muscles.