Ribs

Question 1

What are true ribs and what do they articulate with?

Answer 1

Upper 7 ribs, articulate with sternum via costal cartilages

Question 2

What are ribs 8-10 called and what do they articulate with?

Answer 2

False ribs, with costal margin

Question 3

Ribs articulate with which vertebrae?

Answer 3

Thoracic, head and tubercle

Question 4

Ribs 11 and 12 are called ?

Answer 4

Floating ribs

Question 5

Ribs 1 and 2 are _________ ribs.

Answer 5

atypical

Question 6

What attaches on rib 1, scalene tubercle?

Answer 6

M. scalenus anterior

Question 7

What are scalenus anterior’s attachment points?

Answer 7

From vertebrae, transverse processes C3-6, to scalene tubercle, rib 1

Question 8

What does scalene anterior do?

Answer 8

raises rib, flexion and rotation of neck

Question 9

What attaches to the ridge on rib 2?

Answer 9

M. scalenus posterior

Question 10

What are scalenus posterior’s attachment points?

Answer 10

from vertebrae, transverse processes C5-7 to ridge of rib 2

Question 11

What does scalenus posterior do?

Answer 11

raises rib, flexion and rotation of neck

Question 12

Ribs 11 and 12 are __________ ribs.

Answer 12

atypical

Question 13

What are the non-metric traits of ribs?

Answer 13

Cervical and lumbar ribs, bifid ribs and fused ribs

Question 14

When placed on a horizontal surfaces the heads rise to a maximum height above the surface in rib 7/8.
True of false

Answer 14

true

Question 15

Costal cartilages are flat bars of hyaline cartilage. True or false

Answer 15

True

Question 16

Costal cartilages restrict the movement of thorax. True or false

Answer 16

False, costal cartilages contribute to considerable mobility and elasticity of the thorax

Question 17

Upper 6 or 7 pairs of costal cartilages articulate directly with sternum via _____ joints.

Answer 17

synovial

Question 18

7/8 - 10 colastal cargilages form what?

Answer 18

the costal margin

Question 19

What is a costochondral junction?

Answer 19

Rib and cartilage merge together with convex tip of cartilage being received by the concave rib end anteriorly, not a joint per se. Periosteum and perichondrium are continuous, no movement across this joint

Question 20

First costosternal joint between costal cartilage 1 and the manubrium is a primary ________ joint, therefore has potential to _______ with age.

Answer 20

cartilaginous, synostose

Question 21

If manubriocostal synostosis occurs with the first rib then sclerotic manubriosternal synostosis will NOT occur. True or false?

Answer 21

True

Question 22

If matrical manubriosternal fusion occurs then manubriocostal fusion will occur. True or false?

Answer 22

False, If matrical manubriosternal fusion occurs then manubriocostal fusion will NOT occur.

Question 23

Costosternal joints 2-7/8 are _______.

Costosternal joints 9 & 10 are rarely _______ and the joint cavity may be absent

Answer 23

synovial, synovial

Question 24

The first rib articulates with:

Answer 24

T1 only