3.8 Musculoskeletal System

What are the two main components of the musculoskeletal system?

• The brain and spinal cord work together to form this system.

• The ligaments and tendons are the only structures in this system.

• The bones and muscles are the main parts of this system.

• The lungs and heart support the movements of this system.

What is the main role of ligaments in the body?

• Ligaments produce red and white blood cells in the bone marrow.

• Ligaments connect muscle to bone and help muscles to contract.

• Ligaments hold bones together at joints by being tough and elastic.

• Ligaments are located only in the ears and help with hearing.

What is the function of cartilage in the musculoskeletal system?

• Cartilage helps blood to flow through muscle tissues.

• Cartilage reduces friction and supports flexible movement.

• Cartilage connects muscle fibres to ligaments at joints.

• Cartilage stores calcium for muscle energy use.

What types of tissue make up the human skeleton?

• The skeleton is made of bone, ligaments, and cartilage.

• The skeleton is composed of muscle, fat, and neurons.

• The skeleton contains water, marrow, and fat.

• The skeleton has tendons, enzymes, and smooth muscle.

What is the function of bone marrow in certain bones?

• Bone marrow stores nutrients for skin regeneration.

• Bone marrow produces red and white blood cells.

• Bone marrow controls nerve messages to muscles.

• Bone marrow connects tendons to the skeleton.

What are tendons responsible for in the musculoskeletal system?

• Tendons connect muscle to other muscles.

• Tendons join bones together at all joints.

• Tendons connect muscles to bones to allow movement.

• Tendons produce force for involuntary muscle actions.

Why are skeletal muscles also called voluntary muscles?

• They move automatically without signals from the brain.

• They are muscles that control digestion and blood flow.

• They are muscles that move bones with conscious effort.

• They are only found in the heart and surrounding bones.

What causes muscles to contract and move bones?

• Muscles expand when they receive messages from the heart.

• Muscles are pushed by bones to produce movement.

• Muscles receive signals from nerves to contract and shorten.

• Muscles get thicker when tendons pull on bones randomly.

Why do skeletal muscles work in pairs?

• Skeletal muscles work in pairs to push and pull bones.

• Skeletal muscles work in pairs because bones are flexible.

• Skeletal muscles work in pairs because they cannot push.

• Skeletal muscles work in pairs to contract in all directions.

What causes the elbow to straighten after bending?

• The triceps contracts and the biceps also contracts.

• The triceps contracts and the biceps relaxes.

• The biceps pulls both bones at the same time.

• The elbow sends a signal to the spine to stop bending.