Experiment # 27 Comparison of the structure of skeletal, smooth and cardiac muscles with the help of prepared slides. Preparation of skeletal muscle slide

Question 1

Define a muscle?

Answer 1

A tissue composed of fibers capable of contracting to effect bodily movements-is called muscle.

Question 2

What are different types of muscles in human body?

Answer 2

In the muscular system, muscle tissue is categorized into three distinct types: skeletal,
cardiac, and smooth. Each type of muscle tissue in the human body has a unique structure
and a specific role. Skeletal muscle moves bones and other structures. Cardiac muscle
contracts the heart to pump blood.

Question 3

Where three types of muscles are found in man?

Answer 3

Skeletal muscle tissue is found in our skeletal muscles; for example, the biceps. Cardiac
muscle is found in our heart, and smooth muscle is found in our visceral, or hollow, organs
for example, blood vessels and intestines.

Question 4

What is cramp?

Answer 4

Cramp is an involuntary and painful contraction of one or more muscles. It may be eithér by
loss of salt or as a result or prolonged sweating.

Question 5

Which type of muscle is not striate ?

Answer 5

Smooth muscles are not striated.

Question 6

How cardiac muscles are different from skeletal muscles?

Answer 6

Cardiac muscles have irregular steps and are branched whereas in skeletal muscle have
regular stripes and are cylindrical.

Question 7

Which part of the muscle fiber change when a skeletal muscle contracts.

Answer 7

There are the ‘I’s bands which shorten when a muscle contracts.

Question 8

What do you understand by tetanus?

Answer 8

It refers to the result of wave summation which produces a smooth and sustained
contraction of muscle.

Question 9

What is a syncytium?

Answer 9

A single cells or a cytoplasmic mass containing several nuclei formed by the fusion of cells or
by division of nuclei.