Skeletal System

Question 1

Total number of bones in the human body

Answer 1

206 bones

Question 2

14 facial bones/facial skeleton

Answer 2

Unpaired:
Mandible
Vomer

Paired:
Maxilla
Nasal bone
Lacrimal bone
Palatine bone
Zygomatic bone
Inferior nasal concha

Question 3

6 cranial bones

Answer 3

Unpaired:
Frontal bone
Ethmoid bone
Sphenoid bone
Occipital bone

Paired:
Parietal bone
Temporal bone

Question 4

4 Parts of the Skeletal System

Answer 4

1. Bones
2. Joints
3. Cartilages
4. Connective tissues (ligaments & tendons)

Question 5

5 functions of the bones

Answer 5

1. Support body
2. Protect soft organs
3. Movement with muscles
4. Store minerals and fats
5. Form blood cells

Question 6

2 basic types of bone tissue

Answer 6

1. Compact bone (homogenous)
2. Spongy bone (open spaces)

Question 7

4 classifications of bones based on shape

Answer 7

1. Long
2. Short
3. Flat
4. Irregular

Question 8

Examples of long bones

Answer 8

Femur
Fibula
Tibia
Metatarsals, metacarpals
Phalenges
Humerus
Radius
Ulna

Question 9

Examples of short bones

Answer 9

Carpal/wrist bones
Tarsal/ankle bones

Question 10

Example of flat bones

Answer 10

Skull
Sternum
Scapula
Ribs
Illium, ischium, pubis

Question 11

Examples of irregular bones

Answer 11

Vertebrae
Pelvis
Mandible
Maxilla

Question 12

3 types of bone cells

Answer 12

1. Osteocytes
2. Osteoblasts
3. Osteoclasts

Question 13

Mature bone cells

Answer 13

Osteocytes

Question 14

Bone-forming cells

Answer 14

Osteoblasts

Question 15

Bone-destroying cells, breaks down bone matrix for remodeling and release of calcium

Answer 15

Osteoclasts

Question 16

Which two bone cells are involved in bone remodeling?

Answer 16

Osteoblasts and osteoclasts

Question 17

In embryos, the skeleton is primarily ______.

Answer 17

Hyaline cartilage

Question 18

Give 3 isolated areas where cartilage is located

Answer 18

1. Bridge of nose
2. Parts of ribs
3. Joints

Question 19

2 divisions of the human skeleton

Answer 19

1. Axial
2. Appendicular

Question 20

4 main body parts that are part of the axial skeleton

Answer 20

1. Head
2. Neck
3. Back
4. Chest

Question 21

Place where two bones come together

Answer 21

Joint or articulation

Question 22

3 types of joints

Answer 22

1. Fibrous
2. Cartilaginous
3. Synovial

Question 23

Immovable joints that connect bones

Answer 23

Fibrous

Question 24

Locations of fibrous joints

Answer 24

Skull, pelvis

Question 25

Slightly immovable joints

Answer 25

Cartilaginous

Question 26

Locations of cartilaginous joints

Answer 26

Spine or ribs

Question 27

Freely movable, has fluid that lubricates and protects bones

Answer 27

Synovial

Question 28

This fluid is found between bone cavities

Answer 28

Synovial fluid

Question 29

6 types of synovial joints

Answer 29

1. Plane 2. Hinge 3. Pivot 4. Condyloid 5. Saddle 6. Ball-and-socket