the musculoskeletal system

Question 1

acromion

Answer 1

the distal end of the spine of the scapula. forms a synovial joint with the distal clavicle and provides attachment for the caracoacromial ligament and deltoid muscle

Question 2

anterior nasal (piriform) aperature

Answer 2

the front opening of the bony nasal cavity of the skull

Question 3

atlas (C1)

Answer 3

the first cervical vertebra

Question 4

axis (C2)

Answer 4

the second cervical vertebra

Question 5

cervical vertebrae

Answer 5

region of the vertebral column formed by seven vertebrae. the upper two in order are named atlas and axis.

Question 6

clavicles

Answer 6

the paired bones forming the anterior parts of each shoulder girdle. forms struts, which allow the scapulate to move around the thoracic cage

Question 7

coccyx

Answer 7

the terminal part of the vertebral column. it is a vestigial tail with only four or five segments

Question 8

costal cartilage

Answer 8

bars of the hyaline cartilage that attach to the anterior ends of the ribs. cartilages 1-7 connect directly to the sternum, 8-10 articulate with the cartilage above, 11-12 have no connection with the sternum at all

Question 9

false ribs

Answer 9

pairs 8-10, have only an indirect connection with the sternum

Question 10

floating ribs

Answer 10

pairs 11-12, have no connection with the sternum, either directly or indirectly

Question 11

frontal bone

Answer 11

bone underlying the forehead

Question 12

humerus

Answer 12

bone of the upper arm

Question 13

ilium

Answer 13

one of the three component bones of the hip. it has a flared crest or wing superiorly and a body inferiorly

Question 14

lower teeth

Answer 14

in an adult, each side has two incisors, one canine, two premolars, and three molars

Question 15

lumber vertebra

Answer 15

vertebrae of lower back. each has a large body; short, thick laminae; and pedicles and mammillary processes extending backward from the superior articular process

Question 16

mandible

Answer 16

the bone of the lower jaw. it has an alveolar margin to support the teeth, paired condylar processes for articulation with the temporal bone, and paired coronoid processes

Question 17

maxilla

Answer 17

the bone of the medial cheek. it contributes to the inferior margin of the orbit and support of the upper teeth

Question 18

occipital bone

Answer 18

the large bone on the underside of the skull. it provides attachment for the post vertebral muscles of the neck and bears occipital condyles for articulation with the atlas

Question 19

orbit

Answer 19

the bony cavity containing the eye, lacrimal gland, extraocular muscles, nerves, vessels and orbital fat. bounded by the maxilla, frontal, sphenoid, ethmoid, and lacrimal bones