HBS 1.2.1-1.2.3 Quiz

What is the endomysium?

• A type of muscle fiber responsible for contraction.

• A thin layer of connective tissue that wraps around individual muscle fibers, providing support and insulation.

• A type of connective tissue that connects muscles to bones.

• A protective layer surrounding the entire muscle group.

What is a muscle fiber?

• A type of nerve cell that transmits signals to muscles.

• A long, cylindrical cell that makes up skeletal muscle tissue and is responsible for muscle contraction.

• A type of connective tissue that supports muscle fibers.

• A small unit of fat tissue that stores energy.

Tags

NGSS.HS-LS1-2

NGSS.HS-LS1-4

What is the function of myofilaments?

• To store energy in muscle fibers

• To produce muscle contraction through interaction of actin and myosin

• To transport oxygen in the blood

• To provide structural support to muscle fibers

What is the role of glycogen in muscle cells?

• Glycogen serves as a stored form of glucose in muscle cells, providing energy during muscle contraction.

• Glycogen is a protein that helps in muscle repair after exercise.

• Glycogen is a type of fat that stores energy for long-term use.

• Glycogen is a hormone that regulates blood sugar levels.

What are troponin and tropomyosin?

• Regulatory proteins bound to actin filaments in muscle cells, playing a key role in muscle contraction by regulating the interaction between actin and myosin.

• Structural proteins that provide support to muscle fibers during contraction.

• Enzymes that catalyze the breakdown of ATP in muscle cells.

• Hormones that regulate muscle growth and repair.

What connects skeletal muscle to bone?

• Ligaments

• Cartilage

• Tendons

• Muscles

What is the sarcolemma?

• The outer layer of a muscle fiber that stores calcium ions.

• The plasma membrane of a skeletal muscle cell that surrounds the muscle fiber.

• A type of connective tissue that supports muscle fibers.

• The part of the muscle responsible for generating force.

What is the function of tendons?

• To connect muscles to muscles

• To transmit the force generated by muscles to bones, facilitating movement.

• To store energy for muscle contractions

• To protect bones from injury

What is a sarcomere?

• A type of muscle fiber that stores calcium

• The basic functional unit of a muscle fiber, defined as the segment between two Z lines, and is responsible for muscle contraction.

• A protein that helps in muscle relaxation

• A connective tissue that surrounds muscle fibers.

What are ligaments?

• Tough bands of connective tissue that connect bones to other bones at joints, providing stability.

• Soft tissues that connect muscles to bones.

• Fluid-filled sacs that cushion joints and reduce friction.

• Cartilage that provides support and flexibility to joints.