Structure of Muscle Tissue Quiz

What is the basic unit of a skeletal muscle?

• nucleus

• mitochondria

• cytoplasm

• sarcomere

What are the two main proteins found in skeletal muscle?

• glucose and fructose

• hemoglobin and myoglobin

• actin and myosin

• collagen and elastin

What is the function of the sarcoplasmic reticulum in skeletal muscle?

• Stores and releases oxygen

• Regulates body temperature

• Stores and releases calcium ions

• Produces red blood cells

What is the role of the sarcomere in skeletal muscle contraction?

• It is responsible for maintaining the body's balance

• It helps in the absorption of nutrients in the muscle

• It regulates the body temperature during exercise

• It is the basic unit of muscle contraction in skeletal muscle.

What is the function of the motor neuron in skeletal muscle contraction?

• Producing ATP for muscle contraction

• Regulating blood flow to the muscle

• Transmitting signals from the central nervous system to the muscle fibers

• Storing nutrients for muscle growth

What is the role of the neuromuscular junction in skeletal muscle contraction?

• Transmitting the signal from the motor neuron to the muscle fiber

• Storing excess nutrients in the muscle fiber

• Regulating blood flow to the muscle

• Producing ATP for muscle contraction

What is the function of the T-tubules in skeletal muscle?

• Storing excess nutrients for energy

• Transmitting the action potential deep into the muscle fiber

• Producing and releasing neurotransmitters

• Regulating the flow of blood through the muscle

What is the importance of calcium ions in skeletal muscle contraction?

• Calcium ions are responsible for the elasticity of muscle tissue

• Calcium ions regulate the interaction between actin and myosin filaments

• Calcium ions play a role in the transmission of nerve impulses to muscle cells

• Calcium ions help in the production of ATP in muscle cells

What is the structure of a skeletal muscle fiber?

• Ribosomes, vacuoles, and cell membrane

• Myofibrils, sarcoplasmic reticulum, and sarcolemma

• Nucleus, Golgi apparatus, and lysosomes

• Mitochondria, endoplasmic reticulum, and cytoplasm

What is the role of the myofibrils in skeletal muscle contraction?

• They are responsible for muscle contraction.

• They provide structural support for the muscle.

• They store energy for muscle contraction.

• They regulate blood flow to the muscles.