Question

List the three types of muscle tissue. In what body systems are they found? For each type state whether it is voluntary or involuntary, whether it is striated, and briefly describe the function of each type (i.e. what moves when they contract?).

Answer 1

What is Muscle tissue ?

These are soft cells that together make up the muscles.

Types of muscle tissue -

There are three type of muscle tissue i.e. skeletal,cardiac and smooth muscle.

Skeletal Muscle tissue-

1. These are located in between the bones.

2. They connect the epimysium to the periosteum via tendon.

3. They're under voluntary control and are striated. They have sacromere i.e repeating unit between two Z lines.

4. Their function is to provide movement,generate heat and energy,posture maintenance and protection of the internal organs that it surrounds.

Smooth muscle tissue-

1. These are located in walls of hollow organs like stomach,intestines, urinary bladder and uterus, and in the walls of passageways of the arteries and veins of the circulatory system, and the tracts of the respiratory, urinary and reproductive systems. Except in the walls of heart.

2. They are not striated and are of spindle shape. They're under involuntary control.

3. Their function is to maintain the internal movement that are vital for the body like flow of blood in arteries, movement of food in digestive tract,urination etc.

Cardiac muscle tissue -

1. As the name suggests, these are located in the walls of heart.

2. These are striated muscle and fall under the involuntary control. They also have sacromere like skeletal muscle.

3. They have characterised by intercalated disc that joins the cardiac cell together and transmits the signal between them.

4. Function of cardiac muscle tissue is contraction of heart muscle and pumping of blood in the body.