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Animal Tissues - Muscular Tissue

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Topics

description

  • Types of Muscular Tissue
  • Skeletal muscles,
  • Smooth or Non-striated muscles,
  • Cardiac Muscles

notes

Muscular Tissue

These tissues are composed of long, tube-shaped fibres, which are structured in parallel arrays and are mainly composed of numerous fine fibrils, called myofibrils. Muscular tissues play a vital role in contraction, relaxation and other bodily movements. There are three different types of muscular tissues: skeletal muscles, smooth muscles, and cardiac muscles.

striated muscle

smooth muscle

Cardiac Muscles

  • These are special kinds of involuntary muscles.

  • The muscles of the heart are called Cardiac Muscles they perform rhythmic contraction and relaxation throughout our life.

  • They are cylindrical in shape, they have branches and there is a single nucleus.

  • Cardiac muscle consists of individual heart muscle cells connected by intercalated discs to work as a single functional organ

notes

Muscular Tissue:

  • Elongated cells

  • This tissue is responsible for movement in our body.

  • Contain special proteins called contractile proteins for movement

1) Skeletal muscles:

  • They are called Striated muscles since these muscles show alternate light and dark bands or striations.

  • The cells of this tissue are long, cylindrical, unbranched, and multinucleate.

  • They are voluntary muscles(controlled on will)

  • Present in the limbs.

2) Smooth muscles

  • Unstriated muscles since they does not show the presence of dark and light bands.

  • The cells are long with pointed ends (spindle-shaped) and uninucleate.

  • They are involuntary muscles(not on our will)

  • Present in the alimentary canal, iris of the eye, in ureters, and in the bronchi of the lungs.

3) Cardiac Muscles

  • Show rhythmic contraction and relaxation throughout life.

  • Heart muscle cells are cylindrical, branched, and uninucleate.

  • They are involuntary muscles.

  • Present in the heart.

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Video Tutorials

We have provided more than 1 series of video tutorials for some topics to help you get a better understanding of the topic.

Series 1


Series 2


Shaalaa.com | Structural Organization Animals part 13 (Muscular Tissue)

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Shaalaa.com


Structural Organization Animals part 13 (Muscular Tissue) [00:05:30]
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