Skeletal System

Question 1

What are the two main parts of the human skeleton?

Answer 1

Axial skeleton and appendicular skeleton.

Question 2

Name three components of the axial skeleton.

Answer 2

• Skull
• Sternum
• Ribs
• Vertebral column

Question 3

What bones are included in the appendicular skeleton?

Answer 3

• Shoulder girdle
• Hip girdle
• Leg bones
• Arm bones

Question 4

What is the principal function of a long bone?

Answer 4

Lever.

Question 5

What is the principal function of a short bone?

Answer 5

Strength.

Question 6

What is the principal function of an irregular bone?

Answer 6

Protection.

Question 7

What is the principal function of a flat bone?

Answer 7

Large surface area for muscle attachment.

Question 8

What is the principal function of a sesamoid bone?

Answer 8

Increase mechanical advantage of tendon.

Question 9

List five functions of the skeleton.

Answer 9

• Provides shape
• Allows movement
• Provides protection to vital organs
• Produces red blood cells
• Stores minerals and fats
• Provides attachment site for soft tissue

Question 10

What is the role of ligaments in the skeletal system?

Answer 10

Connects bones to bones.

Question 11

What is the role of tendons in the skeletal system?

Answer 11

Connects muscles to bones.

Question 12

What is cartilage?

Answer 12

A flexible connective tissue found in various parts of the body.

Question 13

What is the function of synovial fluid?

Answer 13

Reduces joint friction by lubrication and maintains joint stability.

Question 14

What does the synovial membrane do?

Answer 14

Encloses fluid and secretes fluid.

Question 15

What is the function of the capsular ligament?

Answer 15

Joins and holds together the bones of the joint.

Question 16

What is the role of articular cartilage?

Answer 16

Prevents friction between and cushions ends of bones.

Question 17

What is the function of bursae?

Answer 17

Prevent friction and wear.

Question 18

What do pads of fat do in the joints?

Answer 18

Cushion the joint.

Question 19

What are menisci and their function?

Answer 19

Help bones fit together and provide stabilization.

Question 20

What are the types of synovial joints?

Answer 20

• Ball and socket
• Hinge
• Pivot
• Ellipsoid
• Gliding

Question 21

What joint type allows movement in three axes?

Answer 21

Ball and socket joint.

Question 22

Which joint type allows movement in one axis?

Answer 22

Hinge joint.

Question 23

What is the movement pattern for a pivot joint?

Answer 23

Rotational movement.

Question 24

Fill in the blank: The joint at the base of the thumb is a _______ joint.

Answer 24

Saddle.

Question 25

What type of movement is flexion?

Answer 25

Decreasing the angle between two body parts.

Question 26

What is dorsiflexion?

Answer 26

Flexing the foot upwards.

Question 27

What is the opposite of abduction?

Answer 27

Adduction.

Question 28

What is circumduction?

Answer 28

Circular movement of a limb.

Question 29

What does medial rotation refer to?

Answer 29

Turning a limb toward the midline of the body.

Question 30

What is supination?

Answer 30

Turning the palm upward.

Question 31

What is eversion?

Answer 31

Turning the sole of the foot outward.

Question 32

What is elevation in terms of movement?

Answer 32

Raising a body part.

Question 33

What is the term for lowering a body part?

Answer 33

Depression.

Question 34

What is horizontal adduction?

Answer 34

Moving a limb toward the midline in a horizontal plane.

Question 35

What is horizontal abduction?

Answer 35

Moving a limb away from the midline in a horizontal plane.