Skeletal System

Question 1

What is the order of vertebrae?

Answer 1

7 cervical
12 thoracic
5 lumbar

Question 2

what are inter vertebral discs?

Answer 2

flexible fibrocartilage which separate the single vertebre

Question 3

What does the axial skeleton include?

Answer 3

80 bones
bones, skull vertebral column, an rib cage

Question 4

What are the 4 sutures?

Answer 4

Coronal
sagittal
squamous
lambdoid

Question 5

What is the foreman Magnum?

Answer 5

Bone of occipital bone
surrounds the lover part of the brain (where the spinal cord connects)

Question 6

What are occipital codyles?

Answer 6

rocker like and lateral to foramen
rest on the first vertebra of the spinal column

Question 7

What is the sphenoid bone?

Answer 7

butterfly shape that spans the width of the skull
forms part of the floor of the cranial cavity

Question 8

what is the Stella turcica?

Answer 8

small depression in the middle of the sphenoid bone

Question 9

what is held in the Stella turcica?

Answer 9

pituitary gland

Question 10

What is the Crista galli?

Answer 10

projects from it’s superior surface
the outermost covering of the brain attaches to this projection

Question 11

What is cribriform plates?

Answer 11

small holes on each side of Crista galli
allows nerve fibers carrying impulses from the olfactory (smell) receptors of the hose to reach the brain.

Question 12

how many facial bones are there?

Answer 12

14
12 paired

Question 13

what are the two single bones of the face?

Answer 13

mandible
vomer

Question 14

what are palatine bones?

Answer 14

paired bones lying posterior to the palatine processes of the maxillae
-form the posterior part of the hard palate

Question 15

what is the clef palate?

Answer 15

failure to these or the palatine processes to fuse medially results in the clef plate

Question 16

What are the lacrimal bones?

Answer 16

tear ducts

Question 17

what is the interior conchae?

Answer 17

twin curved bones projecting from the lateral walls of nasal cavity

Question 18

What bone is the conchae a part of?

Answer 18

the ethmoid bone

Question 19

where the hyoid bone lie?

Answer 19

• not a part of skull
• closely related to the mandible and temporal bones
• doesn’t articulate directly with any other bone

Question 20

features of the atlas

Answer 20

c1
no centrum
receives the occipital condyles of skull “yes”

Question 21

features of axis?

Answer 21

c2
acts as a pivot for rotation of atlas and skull

Question 22

what is alae? (sacrum)

Answer 22

• wing-like in shape
• articulates laterally with the hip bones forming the sacroiliac joints
• the sacrum forms the posterior wall of the pelvis

Question 23

all facial bones except (BLANK) join the maxillae?

Answer 23

maxillary

Question 24

is the maxillae the main bone of the face?

Answer 24

yes

Question 25

where does the maxillae carry the upper teeth in?

Answer 25

alveolar margin

Question 26

what are inter vertebral discs?

Answer 26

flexible fibrocartilage which separate the single vertebrae

Question 27

vertebral discs prevent what?

Answer 27

shock to the head when walking and running

Question 28

features of the body / centrum?

Answer 28

- disc like - weight-bearing part of the vertebrae facing anteriorly in the cerebral column

Question 29

features of the vertebral arch

Answer 29

- arch formed from the joining of all posterior extensions - the laminae and pedicles from the vertebral body

Question 30

features of the vertebral foreman

Answer 30

canal through which the spinal cord passes

Question 31

features of the transverse processes

Answer 31

two lateral projections from the vertebral arch

Question 32

features of the thoratic vertebrae

Answer 32

- larger than the cervical vertebrae - heart shaped body - has two costal demifacets (articulating surfaces) on each side - receive the heads of the ribs

Question 33

features of the lumbar vertebrae

Answer 33

- massive block like bodies - short - hatchet shaped spinous processes - make them look like a moose head from the lateral aspect

Question 34

what two things does the sacrum consist of?

Answer 34

sacral canal coccyx

Question 35

what is the sacral canal?

Answer 35

the cerebral Canal continuing inside the sacrum

Question 36

sternum (flat) has three parts

Answer 36

the manubrium the body the xiphoid process

Question 37

what is the coccyx?

Answer 37

- formed from the fusion of three to five tiny irregular shaped vertebrae - it is the human tailbone

Question 38

where is the sternum attached?

Answer 38

to the first seven pairs of ribs

Question 39

what is the jugular notch?

Answer 39

concave upper border of the manubrium it can be palpated (examined by touch) easily

Question 40

what are TRUE ribs?

Answer 40

first 7 pairs they attach directly to the sternum by costal cartilage

Question 41

what are FALSE ribs?

Answer 41

the next 5 pairs they either attach indirectly to the sternum or are not attached to the sternum at all

Question 42

what are FLOATING ribs?

Answer 42

the last two pair of the false ribs do not attach to the sternum

Question 43

what is the intercostal spaces between the ribs are filled with?

Answer 43

intercostal muscles that aid in breathing