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This protein forms thin filaments in muscle cells and interacts with myosin to facilitate contraction.
What is actin?
This group of diseases causes progressive weakening and degeneration of muscles.
What is dystrophy?
This type of connective tissue connects muscles to bones.
What is a tendon?
This term describes a muscle's ability to shorten and generate force.
What is contractility?
The functional unit of a muscle fiber, where the contraction process occurs.
What is a sarcomere
Found in the walls of hollow organs, this muscle type is non-striated and operates involuntarily.
What is smooth muscle?
This term refers to the decrease in size or wasting away of a muscle or organ.
What is atrophy?
This connective tissue binds bones to other bones and helps stabilize joints.
What is a ligament?
The type of muscle contraction where the muscle shortens as it generates force.
What is an isotonic contraction?
This structure surrounds each muscle fiber and contains the myofibrils.
What is the sarcoplasm?
This type of muscle is striated and responsible for voluntary movement, attaching to bones
What is skeletal muscle?
This part of the nervous system controls voluntary muscle movements, including skeletal muscles.
What is the somatic nervous system?
This organelle within muscle cells is responsible for storing calcium ions.
What is the sarcoplasmic reticulum?
This term refers to the muscle's ability to return to its original shape after being stretched.
What is elasticity?
The protein filaments that form the striations in skeletal muscle cells.
What are actin and myosin?
This protein works with actin during muscle contraction, forming thick filaments in muscle fibers.
What is myosin?
This type of contraction involves the muscle generating force without changing length.
What is an isometric contraction?
The release of this ion from the sarcoplasmic reticulum triggers muscle contraction.
What is calcium?
This type of muscle fiber is designed for quick, powerful contractions but fatigues quickly.
What are fast-twitch fibers?
This muscle type is found only in the heart and is striated and involuntary.
What is cardiac muscle?
This condition refers to an increase in muscle size due to increased demand or exercise.
What is hypertrophy?
The influx of calcium ions into muscle cells causes this process to occur.
What is muscle contraction?
These fibers are more fatigue-resistant and are used in prolonged, low-intensity activities.
What are slow-twitch fibers?