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Flashcards in SKELETAL Deck (19)
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1

The body framework consist of:

bone, cartilage. ligaments, and joints

2

8 Functions of the Skeletal System

support
protection
movement (lever)
mineral/growth factor storage (calcium and phosphorous)
blood cell formation (hemopoiesis)
triglyceride storage
hormone production (osteocalcin, regulate bone formation)
detoxification

3

Individual bones are classified by

shape

4

Bone shapes include:

long, short, flat, irregular, and sesamoid

5

A typical long bone consist of:

irregular epiphysis at each end, (cancellous bone, spongy)
shaft/diaphysis (compact)

6

mitotically stem cells of bone formation
periosteum and endosteum

osteogenic/ osteoprogenic

7

bone-forming ells the secrete the bone matrix

osteoblast

8

principle mature cells
occupy spaces in the lacunae, monitor and maintain bone matrix
stress or strain sensors; communicate

osteocytes

9

bone destroying cells, WBC

osteoclast

10

PTH

released by parathyroid gland
when blood Ca is down
stimulates osteoclast

11

Calcitonin

released by thyroid gland
when blood Ca is up
stimulates Osteoblast

12

Axial skeleton consist of the

skull
vertebral column
twelve pairs of ribs and sternum

13

The skulls Is compromised of

28 bones
14 facials
14 cranial vault bones

14

Facial bones include

2 nasal
2 maxillary bones
2 zygomatic bones
ONE MANDIBLE (only movable)
2 Palestine bones
1 vomer
2 lacrimal bones
2 inferior nasal conchae

15

The bones of cranium include

occipital, temporal, ethmoid, paired parietal, sphenoid, and ossicles of the ear

16

The vertebral column is divided into five subsections

7 cervical vertebrae
12 thoracic vertebrae
5 lumbar
5 sacral
coccygeal (tailbone)

17

The appendicular skeleton consist of

the girdles and the limbs

18

The upper portion consist of the

shoulder girdles, scapula, clavicle
humerus, ulna, radius, carpals, metacarpals, phalanges

19

The lower portion consist of the

pelvic girdle or os coxae
fused ilium, ischium, and pubis
femur, tibia, fibula, tarsals,metatarsals, and phalanges