Question

What type of muscles are found in the stomach?
A) Cylindrical, Syncytial, Unbranched and Voluntary
B) Cylindrical, Striped, Nucleated and Voluntary
C) Cylindrical, Striped, Branched and Involuntary
D) Spindle-shaped, unbranched, uninucleate and Involuntary

Answer 1

Hint: The abdominal muscles are the muscles that are present in the abdominal cavity or stomach. There are three types of muscular sheets present in the abdomen. The movement of the muscles shows peristaltic movement which is under the control of the autonomic nervous system.

Complete answer:
The muscles are the tissues that help in the movement. They have proteins that bring about contraction and relaxation. There are three types of muscles.
I) Skeletal muscles: They are long, cylindrical, multinucleated which show alternate light and dark bands. These types of muscles are present in the limbs.
II) Smooth muscles: They are long spindle-shaped, uninucleate without striations. They are present in the walls of the alimentary canal. The stomach is the organ of the alimentary canal in which the digestion of food takes place. The stomach is made up of smooth muscles which are spindle-shaped, unbranched and uninucleate and do not have any kind of striations or alternate light and dark bands. The movement of the muscle cells is peristalsis which is involuntary and is under the control of the autonomic nervous system.
III) Cardiac muscles: They are cylindrical branched and uninucleated with bands. They are involuntary.

Thus, the correct answer is option (D).

Note: The movements which are under our control are known as voluntary, the ones which are not in our control are known as involuntary movements. The movement of the limbs is the voluntary movement that is carried by the skeletal muscles or the strained muscles. The movement of the eye, the iris, the alimentary canal, and the heart are called involuntary movements.