Muscle Tissue

MUSCLE TISSUE

Muscle tissue contains long fibres called myofibrils.
They contract and relax in response to stimulation.

Functions

• Produce movement
• Maintain posture
• Allow locomotion
• Provide protection
• Help adjust body position

TYPES OF MUSCLE TISSUE

1. Skeletal Muscle Tissue

• Long, cylindrical, striated fibres
• Multinucleated
• Under voluntary control

Location: Attached to bones
Function: Movement, posture, facial expressions

2. Cardiac Muscle Tissue

• Striated, branched cells
• Connected by intercalated discs
• Involuntary control

Location: Walls of the heart
Function: Pumps blood throughout the body

3. Smooth Muscle Tissue

• Spindle-shaped cells
• No striations
• Single central nucleus
• Involuntary

Location:

• Walls of blood vessels
• Digestive tract
• Uterus
• Bladder
• Respiratory tract
• Iris of eye

FUNCTIONS:

• Digestion and movement of food
• Urine flow regulation
• Control of diameter of blood vessels
• Movement of reproductive cells