Anatomy of Muscle Tissues Quiz

Voluntary control and striated appearance characterize skeletal muscle.

Smooth muscle lacks striations, unlike skeletal and cardiac muscle.

Skeletal muscle fibers are multinucleated and under voluntary control.

Skeletal muscle does not directly regulate blood pressure.

Cardiac muscle contains intercalated discs, allowing coordinated contractions in the heart.

Cardiac muscle is striated and contracts involuntarily.

The sarcomere is the basic unit of muscle contraction in skeletal muscle fibers.

Myosin is the key protein driving muscle contraction by forming cross-bridges with actin.

Acetylcholine triggers muscle fiber contraction at the neuromuscular junction.

Calcium ions enable the binding of myosin to actin during muscle contraction.

Smooth muscle is responsible for involuntary movements, such as those in internal organs.

The sarcoplasmic reticulum stores and releases calcium ions for muscle contraction.

Smooth muscle is present in blood vessel and airway walls, facilitating involuntary movements.

Tendons connect muscles to bones, transmitting the force generated during muscle contraction.

Troponin binds to calcium ions, initiating the movement of tropomyosin and allowing muscle contraction.