2-2 respiration bones & cartilages

Question 1

vertebral column

Answer 1

7 cervical

12 thoracic

5 lumbar

5 sacral (fused)

3/4 coocygeal (fused)

Question 2

cervical vertebrae

Answer 2

C1 = atlas –> holds up the skull

C2 = axis –> allows rotation of head on C1

Question 3

thoracic vertebrae

Answer 3

costal facets for the articulation of the heads of ribs

where ribs attach

Question 4

sternum

Answer 4

largest part in the middle = body

manubirum = fist shaped part on top

xiphoid process = tiny little part on the bottom; point of attachment for muscles

Question 5

ribcage

Answer 5

2 pts of attachment = costal facets & spine

head attaches to spine (?)

neck attaches head & body of bone

angle - part of the rib bone that curves

costal groove - non cranial nerves pass through

Question 6

rib articulation

Answer 6

1-7: true ribs = direct connection to sternum

8-10: false ribs = does not connect directly to sternum; attached to costal facet which is connected to sternum (?)

11-12: floating ribs = not attached to sternum at all

Question 7

pectoral girdle

Answer 7

clavicle = collarbone; connects shoulder to sternum

humerus = bone of upper arm

scapula = shoulder bone

Question 8

pelvic girdle

Answer 8

sacrum = 5 vertebre fused into a single bone

coxal bone = ilium, ischium, pubis

iliac crest = top part of ilium