Question

Directions: Write a response of at least 30 words each to the following questions.

1. What features distinguish the three types of muscular tissue?

2. List the general functions of muscular tissue.

3.   Describe the four properties of muscular tissue.

Answer 1

Answer-

1. Three muscles are cardiac, skeletal and smooth. Distinguishable features are-

Cardiac- Involuntary and found only in heart.

Skeleton- Voluntary and are anchored by tendons to bone.

Smooth- Involuntary and foind in walls of organs and structures such as esophagus, stomach etc.

2. General functions of muscular tissue are-

• Mobility- main function of muscular tissue is to allow movement. When muscle contract and relax they allow movement.
• Stability- Muscle tendons stretched and contribute to stability. Knee and shoulder joint are crucial for stability.
• Posture- skeleton muscle help keep the body in correct position when someone is sitting or standing.
• Breathing- breathing involves the use of diaphragm muscle.
• Circulation- Heart is a muscle which pumps blood throughout the body. The movementis involuntary.

3. Four properties of muscular tissue-

1. Contractility- it is the ability of the muscle tissue to shorten and contact forcefully.
2. Excitabilty- it is the ability to generate action potential in response to stimulus.
3. Extensibilty- it is the ability of muscle to stretch or get longer.
4. Elasticity- it is the ability to return to its original shape.