Skeletal system

Question 1

what does the axial skeleton consist of?

Answer 1

the skull, vertebral column, 12 pairs of ribs and sternum

Question 2

when including the 6 paired bones (ossicles) of the ear, the skull is comprised of how many bones?

Answer 2

18- 14 facial bones and 14 cranial bones

Question 3

Name the facial bones:

Answer 3

2 nasal bones, 2 maxillary bones, 2 zygomatic bones, one mandible (only moveable bone of the skull), 2 palatine bones, 1 vomer, 2 lacrimal bones, and 2 inferior nasal conchae.

Question 4

what are the cranial vault bones?

Answer 4

single occipital, frontal, ethmoid, and sphenoid and the paired parietal, temporal, and ossicles of the ear (malleus, incus, and stapes).

Question 5

the vertebral column is divided into 5 subsections, name each and how many

Answer 5

7 cervical vertebrae, 12 thoracic vertebrae, 5 lumbar vertebrae, 5 sacral vertebrae (fuse to form sacrum), and the coccygeal vertebrae (tailbone)

Question 6

what does the appendicular skeleton include?

Answer 6

the girdles and the limbs

• pelvic and shoulder girdles
• upper and lower limbs

Question 7

what does the upper portion consist of?

Answer 7

the pectoral or shoulder girdle, the clavicle and scapula, and the upper extremity.

Question 8

what are the bones of the arm?

Answer 8

the humerus, the radius and ulna, the carpals (wrist bones), the metacarpals (bones of the hand), and the phalanges (bones of the fingers).

Question 9

what is the lower portions made up of?

Answer 9

the pelvic girdle or os coxae

Question 10

what does each of the os coxae consist of?

Answer 10

a fused ilium, ischium, and pubis

Question 11

bones of the lower extremity include:

Answer 11

the femur (thighbone), the tibia and fibula, the tarsals (ankle bones), the metatarsals (bones of the foot), and the phalanges