1. CP Osteology / Arthrology / Myology

Question 1

Which intercostal muscles head inferiorly and anteriorly from their origin?

Answer 1

External intercostal muscles

Question 2

What kind of joint is the manubriosternal joint?

Answer 2

Symphysis

Question 3

What rib contacts the xiphisternal joint?

Answer 3

Rib 7

Contacts the xiphoid process and the body of the sternum

Question 4

What are the two membranes associated with the intercostal muscles, and where are they located?

Answer 4

Anteriorly: Exterior (Anterior) Intercostal Membrane

Posteriorly: Interior (Posterior) Intercostal Membrane

Question 5

Which intercostal muscles depress the ribs for exhalation?

Answer 5

Internal intercostal muscles

Question 6

Which rib has a fibrous joint where it joins the common cartilage of the rib cage going up to the 7th rib’s insertion on the sternum?

Answer 6

The 10th rib

Question 7

What rib has its contact in the sternal angle?

Answer 7

The second rib.

(Contacts the manubrium and the body of the sternum)

Question 8

What is the other name for the floating ribs?

Which ribs are they?

Answer 8

Vertebral ribs

Ribs 11 - 12

Question 9

What are the two permanent syndchondrosis joints we learned in this lecture?

Answer 9

Xiphisternal joint

1st Sternocostal Joint

Question 10

What is the other name for the false ribs?

Which ribs are they?

Answer 10

Vertebrochondral

8 - 10

Question 11

Which are the typical ribs?

Answer 11

Ribs 3 - 9

Question 12

What is the other name for the true ribs?

Which ribs are they?

Answer 12

Vertebrocostal ribs

Ribs 1 - 7

Question 13

What structures make up the superior thoracic aperture?

Answer 13

1st ribs

1st thoracic vertebra

Costal cartilage of the 1st rib

Superior border of the manubrium

Question 14

Which ribs are atypical?

Answer 14

1-2 and 10-12

Question 15

What is different about the 1st rib?

Answer 15

It has a groove for the subclavian vein and a groove for the subclavian artery.

It has scalene tubercle.

It only has one facet on the head.

Question 16

What is the function of the transverse thoracic muscles?

Answer 16

Depress the rib cage

Question 17

The intraarticular ligament helps anchor which joint?

Answer 17

Costovertebral joint

Question 18

What body structure is also called the angle of louis?

Answer 18

The sternal angle

Question 19

What nerve would you hit if you place too low in a thoracentesis?

Answer 19

The collateral branch of the intercostal nerve

Question 20

What type of joints are the costochondral joints?

Answer 20

Synchondrosis

Question 21

What is different about the 2nd rib that makes it an atypical rib?

Answer 21

It has the tuberosity for the serratus anterior

Question 22

To which joint is the radiate ligament associated?

Answer 22

The costovertebral joints

Question 23

Where are chest tubes typically placed?

Answer 23

Between the 5th and 6th ribs

Question 24

What about the 10-12th ribs make them atypical?

Answer 24

They all only have one articulating facet

They don’t have tubercles or necks

Question 25

What structures make up the inferior thoracic aperature?

Answer 25

12th thoracic vertebra

11th / 12th ribs

Xiphisternal joint