Animal Tissues
Chapter Name : Structural Organization In Animals |
Sub Topic Code : 103_11_07_01_03 |
Topic Name : Animal Tissues |
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Sub Topic Name : Muscle Tissue |
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Introduction
Muscle tissue - Each muscle is made of many long, cylindrical fibers arranged in parallel arrays. These fibres are composed of numerous fine fibrils, called myofibrils. Muscle fibers contract (shorten) in response to stimulation, then relax (lengthen) and return to their uncontracted state in a coordinated fashion.
Pre-Requisites:
To understand what muscle tissue is and what is it's function.
Activity:
Videos which show how our muscle helps in body movement.
Real Life Question:
What are the different types of muscles in our body?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Skeletal muscle | closely attached to skeletal bones. In a typical muscle such as the biceps, striated (striped) skeletal muscle fibers are bundled together in a parallel fashion. |
| Smooth muscle | fibers taper at both ends (fusiform) and do not show striations . Cell junctions hold them together and they are bundled together in a connective tissue sheath. The wall of internal organs such as the blood vessels, stomach and intestine contains this type of muscle tissue. They are involuntary in nature. |
| Cardiac muscle | contractile tissue present only in the heart. Cell junctions fuse the plasma membranes of cardiac muscle cells and make them stick together. |
Learning aids / Gadgets
| Gadgets | How it can be used |
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Practical examples around us
| Examples | Explainations |
|---|---|
| Skeletal muscle | These are voluntary muscles and because of this we are able to walk, run, lift, catch swing(arm) etc. |
What you learn in Theory:
What is muscle tissue
What you learn in Practice:
How muscle tissue helps in our daily functioning.