Science Year 5: Human Skeletal System

What is the function of skull?

• to support the body

• to protect the brain

• to protect the internal organs

• to support and move the body

Answer explanation

The primary function of the skull is to protect the brain from injury. It forms a hard casing around the brain, ensuring its safety, while the other options do not accurately describe the skull's main role.

What is the function of backbone?

• to protect the internal organs

• to support and move the body

• to support the body

• to protect the brain

Answer explanation

The backbone, or vertebral column, primarily functions to support the body. It provides structural integrity, allowing for upright posture and movement, while also protecting the spinal cord.

What is the function of rib?

• to support the body

• to protect the brain

• to support and move the body

• to protect the internal organs

Answer explanation

The primary function of ribs is to protect the internal organs, particularly the heart and lungs, from injury. While they also provide some support to the body, their main role is safeguarding vital organs.

What is the function of leg bone?

• to support and move the body

• to protect the internal organs

• to protect the brain

• to support the body

Answer explanation

The leg bones are crucial for supporting and moving the body. They provide the necessary structure for standing, walking, and running, making 'to support and move the body' the correct choice.

Joint is ...........

• a place where skull and brain are joined togeth

• a place where hand and leg are joined together

• a place where two or more bones are joined together

• a place where two or more organs are joined together

Answer explanation

A joint is defined as a place where two or more bones are joined together, allowing for movement and flexibility in the skeletal system. The other options incorrectly describe joints in relation to organs or body parts.

State the function of joints at the neck

• makes turning and rotation of the head possible

• make movements of the upper body possible

• allow the legs to bend and straighten

• all the answers above

Answer explanation

The joints at the neck primarily allow for the turning and rotation of the head, enabling a wide range of motion. This makes the first answer choice correct, while the other options pertain to different body parts.

State the function of joints at the shoulders, hand and backbone

• makes turning and rotation of the head possible

• make movements of the upper body possible

• allow the legs to bend and straighten

• all the answers above

Answer explanation

The joints at the shoulders, hands, and backbone enable a wide range of movements in the upper body, allowing for actions like lifting, reaching, and rotating. Thus, the correct choice is 'make movements of the upper body possible'.

State the function of joints at the knees

• makes turning and rotation of the head possible

• make movements of the upper body possible

• allow the legs to bend and straighten

• all the answers above

Answer explanation

The joints at the knees primarily function to allow the legs to bend and straighten, facilitating movement such as walking, running, and jumping. The other options relate to different body parts and functions.

Rib cage is use to protect our internal organs. Choose the correct answer.

• lungs and heart

• Hand and Elbow

• brain and skull

• leg and knee

Answer explanation

The rib cage protects vital organs such as the lungs and heart. The lungs are essential for breathing, while the heart is crucial for pumping blood. The brain and legs are not protected by the rib cage.

State the function of joints.

• to protect internal organs

• to allow movements and flexibility of the body

• to allow blood circulation of the body

• to store the mineral in the body

Answer explanation

Joints primarily function to allow movements and flexibility of the body. They connect bones, enabling a range of motions essential for various physical activities, while also providing stability.