Muscle Physiology: Contraction, Energy Systems and Training Adaptations
Muscle Physiology and Exercise Fundamentals
Insertion: the attachment point of a muscle to bone.
Muscle belly: the fleshy central part of a muscle.
Tendon: the tissue that connects muscle to bone; its tension leads to muscle contraction.
Types of Muscle Tissue
Skeletal muscle: promotes voluntary movement and constitutes the skeletal muscle system.
Cardiac muscle: the heart is the main part of the cardiac muscle and controls the circulation of blood.
Visceral muscle: internal organs and the parts of blood vessels; it controls involuntary movement.
Muscle Movement Terminology
- Agonist: the muscle that acts as the prime mover for a movement.
- Antagonist: the muscle that opposes a movement.
- Fixator: a muscle that stabilizes the origin of a prime mover so