10 Questions
What is the fundamental unit of muscle tissue?
Fibres
What happens to muscle fibres when stimulated?
They shorten and contract
What is the primary function of muscles in the body?
To regulate body movements
What is the arrangement of muscle fibres?
In parallel arrays
What is the collective function of muscles in the body?
To move the body and maintain positions
What is the shape of muscle fibres?
Cylindrical
What is the function of myofibrils in muscle fibres?
To provide structure to the muscle fibre
What is the result of muscle fibre contraction?
The muscle fibre shortens
What is the role of muscles in maintaining body position?
To maintain the position of various body parts
What is the outcome of muscle action in the body?
The body adjusts to the environment
Study Notes
Muscle Tissue Structure
- Each muscle is composed of many long, cylindrical fibers arranged in parallel arrays.
- These fibers are made up of numerous fine fibrils, called myofibrils.
Muscle Function
- Muscle fibers contract (shorten) in response to stimulation.
- After contraction, muscle fibers relax (lengthen) and return to their uncontracted state in a coordinated fashion.
- The action of muscles moves the body to adjust to environmental changes and maintain the positions of various body parts.
- Muscles play an active role in all body movements.
Muscle Tissue Structure
- Each muscle is composed of many long, cylindrical fibers arranged in parallel arrays.
- These fibers are made up of numerous fine fibrils, called myofibrils.
Muscle Function
- Muscle fibers contract (shorten) in response to stimulation.
- After contraction, muscle fibers relax (lengthen) and return to their uncontracted state in a coordinated fashion.
- The action of muscles moves the body to adjust to environmental changes and maintain the positions of various body parts.
- Muscles play an active role in all body movements.
Understand the composition and function of muscle tissue, including muscle fibers, myofibrils, and contraction and relaxation mechanisms.
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