Skeletal System

Question 1

Four purposes of the skeletal system

Answer 1

• support the muscles
• gives the body its structure
• stores calcium and minerals
• produces red blood cells

Question 2

What allows the skeleton to move?

Answer 2

Ligaments and tendons attach the muscles to the skeleton allowing it to move

Question 3

Periosteum membrane

Answer 3

A membrane that covers bones and contains blood vessels and nerves

Question 4

Bones produce what?

Answer 4

Blood cells within their marrow

Question 5

How many bones are in a body?

Answer 5

206

Question 6

Four groups of bones

Answer 6

Long bones
Short bones
Flat bones
Irregular bones

Question 7

Describe long bones

Answer 7

Bones that bear the weight of the body. They are covered with cartilage on the ends where they form joints.
Example: arm and ankle

Question 8

Short bones

Answer 8

Allow for intricate movements and are cube shaped.

Example: wrist and foot

Question 9

Flat bones

Answer 9

Bones that protect internal organs and produce blood cells.

Example: skull and ribs and sternum

Question 10

Irregular bones

Answer 10

All other bones, they have irregular shapes.

Example: vertebrae and ears

Question 11

Joint

Answer 11

Point where two or more bones meet. This allows movement.

Question 12

Ball and socket joints

Answer 12

Allow greatest movement.

Hip and shoulder

Question 13

Hinge joint

Answer 13

Allows movement in one direction only.

Elbow and knee

Question 14

Pivot joint

Answer 14

Allow turning from side to side.

The skull is connected to the spine by a pivot joint.

Question 15

Longest bone in the body

Answer 15

Femur

Starts at the hip and ends at the knee. It connects via ball and socket joint

Question 16

Largest bone in the arm

Answer 16

Humerus

Extends from the shoulder to the elbow

Question 17

Six important bones in the body

Answer 17

Neck vertebrae
Sternum
Ribs
Vertebrae
Pelvic bone
Coccyx