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Human Body Muscles (TOPIC 8 )

Updated: May 20, 2021

A brief note about 'HUMAN BODY MUSCLES'


MUSCLES


  1. Study of muscles is known as ‘Myology’ also known as ' Sarcology '.

  2. Except iris and ciliary body all muscles of the body developed from mesoderm .

  3. Conductivity and the ability for self contraction are the two main characteristics of muscles.

  4. There are about 600 muscles in the human body.



TYPES OF MUSCLES

 

Voluntary muscles / Skeletal muscles

  1. The specialized tissue that is attached to bones and allows movement.

  2. Skeletal muscles contribute around 40 percentage of adult body mass in an average healthy person.

  3. Pair related to the skeletal system so its also known as skeletal muscle.

  4. Cylindrical in shape.

  5. Their contractions are controlled by will power off of animals that’s why it’s called the voluntary muscles.

  6. On the structure we can found transverse line at regular interval that's why we can say they are stripped or striated muscles.


 

Involuntary muscles / Smooth muscles

  1. Located in various internal structures including the digestive tract, uterus and blood vessels such as arteries.

  2. Smooth muscle is arranged in layered sheets that contract in waves along the length of the structure.

  3. It is not related to the skeleton source also known as non skeletal muscle.

  4. Spindle in shape.

  5. These muscles are found in the visceral organs so they are known as visceral muscles or smooth muscles.

  6. Its contraction is not controlled by the will power of animals so it’s known as involuntary muscle.

  7. Transverse lines are absent so they are non-striated muscles.


 

Cardiac muscle

  1. it is a special type of muscle which is found only in heart.

  2. Cylindrical in shape.

  3. It is a striated type of muscle.

  4. Its contraction is not controlled by v willpower of animals.


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