Muscle Tissue and Skeletal Muscle Structure Quiz

Which of the following is NOT a type of muscle tissue?

• Skeletal

• Cardiac

• Smooth

• Nervous

What is one of the main functions of skeletal muscle?

• Pumping blood throughout the body

• Providing voluntary movement of the body

• Absorbing nutrients from food

• Producing hormones

Which connective tissue surrounds each individual skeletal muscle fiber?

• Epimysium

• Perimysium

• Endomysium

• Fascia

Arrange the following in the correct order from largest to smallest: muscle, muscle fiber, myofibril, sarcomere, myofilaments.

• Muscle → muscle fiber → myofibril → sarcomere → myofilaments

• Muscle fiber → muscle → myofibril → sarcomere → myofilaments

• Muscle → myofibril → muscle fiber → sarcomere → myofilaments

• Muscle → muscle fiber → sarcomere → myofibril → myofilaments

Tags

NGSS.HS-LS1-2

Which statement best describes the sarcomere?

• It is the connective tissue that surrounds a group of muscle fibers.

• It is the basic contractile unit of muscle that lines up end to end to make up the myofibrils.

• It is the outer membrane of the muscle cell.

• It is a type of muscle tissue found only in the heart.

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NGSS.HS-LS1-1

Why is fascia important in the organization of skeletal muscle?

• It produces heat to maintain body temperature.

• It separates one muscle group from another muscle group with dense fibrous connective tissue.

• It is responsible for voluntary movement.

• It forms the basic contractile unit of muscle.

How do multinucleated skeletal muscle fibers form during development?

• By splitting of a single cell

• By fusion of multiple cells together

• By division of sarcomeres

• By contraction of myofibrils

Which protein filament is thin and attached to the end walls of the sarcomere?

• Myosin

• Actin

• Troponin

• Tropomyosin

What is the main function of myosin in muscle contraction?

• Stores calcium ions

• Acts as a neurotransmitter

• Forms cross bridges that attach to actin

• Breaks down acetylcholine

Which structure is responsible for storing calcium ions in muscle cells?

• Transverse tubules

• Sarcoplasmic reticulum

• Neuromuscular junction

• Motor unit