Muscular System - Notes, Biology, IAS UPSC Notes | EduRev

General Science(Prelims) by IRS Divey Sethi

UPSC : Muscular System - Notes, Biology, IAS UPSC Notes | EduRev

The document Muscular System - Notes, Biology, IAS UPSC Notes | EduRev is a part of the UPSC Course General Science(Prelims) by IRS Divey Sethi.
All you need of UPSC at this link: UPSC

MUSCULAR SYSTEM

Muscular System - Notes, Biology, IAS UPSC Notes | EduRevMuscular System - Notes, Biology, IAS UPSC Notes | EduRev

 

  • Human body has about 639 types of muscles.
  • Muscles specialized to contraction are of 3 types :
    • Striated
    • Unstriated and
    • Cardiac.

Striated Muscles

  • Striated Muscles are also called Skeletal Muscles. These muscles are mostly attached to bones by tendons and takes part in voluntary movements under conscious control of brain.
  • Therefore they are called voluntary muscles. Each muscle fibre shows dark and light striations and is covered by a sheath, the sarcolemma.

Muscular System - Notes, Biology, IAS UPSC Notes | EduRev

  • Its cytoplasm is called sarcoplasm in which are present large number of contractile myofibrils.
  • Myofibrils are made up of thick myosin and thin actin filaments.
  • They are present in limbs, tongue, pharynx, etc.

Unstriated Muscles

  • These smooth muscles are involuntary muscles.
  • Functionally they are of two types – single unit and multi unit.
  • Single unit smooth muscles are present in urinary bladder and gastro intestinal tract.
  • Multi unit smooth muscles are present in walls of large blood vessels.

Cardiac Muscles

  • They are involuntary, striated and non fatigued fibers which are found in the wall of heart where they form myocardium.
  • They generate their own wave of excitation.

 

Offer running on EduRev: Apply code STAYHOME200 to get INR 200 off on our premium plan EduRev Infinity!

Related Searches

ppt

,

IAS UPSC Notes | EduRev

,

Muscular System - Notes

,

IAS UPSC Notes | EduRev

,

Extra Questions

,

Viva Questions

,

Semester Notes

,

Sample Paper

,

Free

,

study material

,

mock tests for examination

,

shortcuts and tricks

,

past year papers

,

Biology

,

Biology

,

video lectures

,

practice quizzes

,

Muscular System - Notes

,

Biology

,

Important questions

,

MCQs

,

Muscular System - Notes

,

Exam

,

IAS UPSC Notes | EduRev

,

pdf

,

Objective type Questions

,

Summary

,

Previous Year Questions with Solutions

;