Year 8 Skeleton

Question 1

What are the three functions of the skeleton?

Answer 1

Protection, support and movement

Question 2

What is the scientific name for the jaw?

Answer 2

The mandible

Question 3

What is the bone in the upper arm called?

Answer 3

Humerus

Question 4

What is the bone in front of your ribcage called?

Answer 4

Sternum

Question 5

What are the two bones in the bottom half of your arm called?

Answer 5

Ulna and radius

Question 6

What is the bone in your upper leg called?

Answer 6

Femur

Question 7

What are the bones in the lower leg called?

Answer 7

Shinbone/ tibia and fibula

Question 8

What is the scientific name for the collarbone?

Answer 8

Clavicle

Question 9

What is the scientific name for the skull?

Answer 9

Cranium

Question 10

What bone protects the heart?

Answer 10

The ribcage

Question 11

What bone protects the brain?

Answer 11

The skull

Question 12

What bone protects the lungs?

Answer 12

Ribcage

Question 13

What bone protects the spinal cord?

Answer 13

Backbone

Question 14

What bone protects the reproductive organs?

Answer 14

Pelvis

Question 15

List the parts of a synovial joint and what they do

Answer 15

Joint capsule with synovial fluid - lubricates bones and the joint
Cartilage - soft material that prevents bones from contact
Tendon - joins muscle to bone
Ligament - joins bone to bone

Question 16

Why must muscles work in pairs?

Answer 16

They can only pull or contact, so pairs of muscles are needed to bend (flex) and straighten (extend) a joint

Question 17

What are two muscles working against each other called?

Answer 17

Antagonistic

Question 18

What is the equation for a moment?

Answer 18

Moment = force times distance

Question 19

What is the unit of moment?

Answer 19

Nm (Newton metre)

Question 20

What are the types of freely movable joints?

Answer 20

Gliding joints, hinge joints, saddle joints and ball and socket joints