Muscles

Question 1

What are muscles?

Answer 1

Muscles are specialized tissues of mesodermal origin

Question 2

What are the special properties of muscles?

Answer 2

The special properties of muscles are
1. Contractibility
2. Excitability
3. Elasticity
4. extensibility

Question 3

How many muscles are there in human body?
How much body weight is given by muscles?
Muscles help in?

Answer 3

There are 640 muscles in human body
- 40-50% of body weight is of muscles
- Muscles help in HOMEOSTASIS

Question 4

What is the scientific study of Muscles called?

Answer 4

The scientific study of muscles is known as Myology

Question 5

Based on location, how many types of muscles are there in human body?

Answer 5

There are three types of muscles based on location
1. Skeletal muscles
2. Visceral muscles
3. Cardiac muscles

Question 6

Describe skeletal muscles

Answer 6

Skeletal muscles-
- Striated
-Voluntary
-Made by nerve fibers by Somatic nervous system
- Helps in Locomotion and maintains body posture

Question 7

Describe Visceral muscles

Answer 7

Visceral muscles
-Smooth / Unstriated
-Involuntary muscles
- Made by nerve fibers from autonomous nervous system
-Found in alimentary canal and reproductive tract
- Function —-> Passage of food through digestive tract, passage of gametes through genital tract

Question 8

Describe Cardiac muscles

Answer 8

Cardiac Muscles
-Muscles of heart
-Helps in pumping of blood
- Striated muscles
-Involuntary muscles
- Made by nerve fibers from Autonomous nervous system