Explain the Muscle Tissue and types.

1.	Explain the Muscle Tissue and types.
Answer» Muscle Tissue : Consists of long, cylindrical, contractile cells called fibres; bring about movement and locomotion. (i) Skeletal Muscle • Consists of long cylindrical, multinucleated fibres. • Closely attached to skeletal bones. • Striated and voluntary. (ii) Smooth Muscles • Consists of spindle like, uni nucleated fibres. • Do not show striations and are involuntary. • Wall of internal organs such as blood vessels, stomach and intestine. (iii) Cardiac Muscles • Short, cylindrical, uni nucleated fibres, branched fibres • Occur in the heart wall and are involuntary. • Intercalated discs for communication.

Answer»

Muscle Tissue :

Consists of long, cylindrical, contractile cells called fibres; bring about movement and locomotion.

(i) Skeletal Muscle

• Consists of long cylindrical, multinucleated fibres.

• Closely attached to skeletal bones.

• Striated and voluntary.

(ii) Smooth Muscles

• Consists of spindle like, uni nucleated fibres.

• Do not show striations and are involuntary.

• Wall of internal organs such as blood vessels, stomach and intestine.

(iii) Cardiac Muscles

• Short, cylindrical, uni nucleated fibres, branched fibres

• Occur in the heart wall and are involuntary.

• Intercalated discs for communication.

Discussion