Muscles are tissues that tighten and relax to produce movement by attaching to bones via tendons. There are about 650 muscles in the human body that fall into two main types - voluntary muscles that are under conscious control and involuntary muscles like the heart that function automatically. Muscles contract and expand bones to enable both internal functions and external movement throughout the body.

1. Muscles

2. What are
Muscles?
The muscles in a body tighten
and relax to produce movement
with the bones. There are about
650 muscles in our body.
Muscles are attached to the bones
by strong fibers called tendons.

3. Voluntary
Muscles
Involuntary
Muscles
Types of
Muscles

4. More About
Muscles…
 The muscles found in the heart are
known as cardiac muscles.
 They control the internal actions of
the body.

5. Movement of
Muscles…
 They pull the bones.
 They contract when bones come
near to each other.
 One bone expands and the
contraction and expansion of bones
makes the different parts of the
body move.

6. Thank You!
Made by Arjan Singh
Class 5-A
Roll No. 23