Chapter 2 Skeletal System

Question 1

Skeletal System Functions

Answer 1

Support, Movement, Protect, Mineral Storage, Production of Blood Cells

Question 2

Axial skeleton

Answer 2

Upright part of the body, 80 bones of the head, thorax and trunk

Question 3

Appendicular Skeleton

Answer 3

126 bones of the extremeties

Question 4

Cranium (8)

Answer 4

Frontal, sphenoid, ethmoid, occipital, parietal, temporal

Question 5

Face (14)

Answer 5

Mandible, vomer, maxilla, zygomatic, lacrimal, inferior concha, palatine, nasal,

Question 6

Vertebral Column (26)

Answer 6

Cervical (7), Thoracic (12), Lumbar (5), Sacrum (5), Coccyx (3)

Question 7

Thorax (25)

Answer 7

Sternum, Ribs (True, false, floating)

Question 8

Upper Extremity (64)

Answer 8

Scapula, clavicle, humerus, radius, ulna, Carpals (8), metacarpals (5), phalanges (14)

Question 9

Lower Extremity (62)

Answer 9

Hip (3), femur, tibia, fibula, patella, tarsals (7), metatarsals (5), phalanges (14)

Question 10

Organic Material

Answer 10

1/3 is organic (living), gives bone elasticity

Question 11

Inorganic

Answer 11

2/3 is inorganic (non-living), gives bone hardness and strength

Question 12

Compact/Cortical bone

Answer 12

Hard, dense, outer shell, completely covers bone, thick along shaft, thin at ends

Question 13

Cancellous/Trabecular bone

Answer 13

Porous and spongy, lighter, most of articular ends

Question 14

Epiphysis

Answer 14

Area at the end of long bones, epiphyseal plate in non-adult bones. Two types in immaure bone - Traction and Pressure

Question 15

Diaphysis

Answer 15

Main shaft, compact, medullary canal, endosteum for bone resorption

Question 16

Periosteum

Answer 16

Covers all bone except articular surface, nourishes, repairs, attachment for ligaments and tendons

Question 17

Foramen

Answer 17

Hole through which blood vessels, nerves and ligaments pass

Question 18

Fossa

Answer 18

Hollow or depression

Question 19

Groove

Answer 19

Ditchlike groove containing tendon or blood vessel

Question 20

Meatus

Answer 20

Canal or tubelike opening

Question 21

Sinus

Answer 21

Air filled cavity

Question 22

Condyle

Answer 22

rounded knuckle like projection

Question 23

Eminence

Answer 23

projecting, prominent part of a bone

Question 24

Facet

Answer 24

Flat or shallow articular surface

Question 25

Head

Answer 25

Rounded articular projection, beyond a narrow necklike portion of a bone

Question 26

Crest

Answer 26

sharp ridge or border

Question 27

Epicondyle

Answer 27

prominence above or on a condyle

Question 28

Line

Answer 28

Less prominent ridge

Question 29

Spine

Answer 29

long, thin projection

Question 30

Trochanter

Answer 30

Very large prominence for muscle attachment

Question 31

Tubercle

Answer 31

small, rounded projection

Question 32

Tuberosity

Answer 32

Large, rounded projection