10/22 Thoracic Wall and Pleural Cavities - Carter 2017 (Completed)

Question 1

What separates the thorax from the abdomen?

Answer 1

respiratory diaphragm

Question 2

how high does the dome of the diaphragm rise?

Answer 2

5th intercostal space - right side

6th intercostal space - left side

Question 3

What does the manubrium articulate with?

Answer 3

clavicles at the sternoclavicular joint

1st ribs

2nd ribs at sternal angle

sternum body at sternal angle

Question 4

What ribs does the body of the sternum articulate with?

Answer 4

ribs 2-7

false ribs 8 - 10

Question 5

What joint allows for hinge-like movement of the sternum body anteriorly and posteriorly allowing for expansion of the thoracic cavity?

Answer 5

manubriosternal joint

Question 6

At what vertebral level is the Xiphisternal joint?

Answer 6

T8

Question 7

What makes true ribs true? How many are there?

Answer 7

ribs 1 - 7

their costal cartilages connect directly to the sternum

Question 8

What makes false ribs false? How many are there?

Answer 8

ribs 8 - 10

their costal cartilages connect indirectly to the sternum

Question 9

What are floating ribs? How many are there?

Answer 9

ribs 11 - 12

do not attach to the sternum

Question 10

How is a rib numbered?

Answer 10

the rib attached to the superior costal facet of the vertebrae will share the same number

This rib will also attach to the same transverse process of the vertebra it shares a number with

This rib will attach to the inferior costal facet of the vertebrae above (superior)

Question 11

What is the joint between a rib and the facet of a vertebra?

Answer 11

costovertebral joint

Question 12

What is the joint between the tubercle of a rib and the transverse process of a vertebra

Answer 12

costotransverse joint

Question 13

What is the ordering of the intercostal muscles superficial to deep?

Answer 13

External intercostals

internal intercostals

innermost intercostals

Question 14

What is the origin and insertion of the external intercostals?

Answer 14

O –> tubercles of a superior rib

I –> costal cartilage/rib border of the inferior rib

Question 15

What muscle is insertion of the external intercostals continuous with?

Answer 15

external obliques

Question 16

what is the action of the external intercostals vs the internal intercostals?

Answer 16

external intercostals –> rib elevation

Internal intercostals –> rib depression

Question 17

What is the origin and insertion of the internal intercostals?

Answer 17

O –> lateral border of sternum

I –> mid-axillary line of ribs

Question 18

What is the origin and insertion of the Innermost intercostals?

Answer 18

O –> angle of the ribs

I –> anterior to mid-axillary line

Question 19

What is the fiber direction for the three layers of intercostals?

Answer 19

External intercostals –> inferomedial

Internal intercostals –> inferolateral

Innermost intercostals –> inferomedial

Question 20

What is the origin and insertion of the Transversus thoracic?

Answer 20

O –> posterior surface of sternum & xiphoid process

I –> costochondral junction of ribs 3 - 6

Question 21

What is the action of the transversus thoracis?

Answer 21

depression of the ribs

Question 22

What innervates the three intercostal muscles and the transversus thoracic muscle?

Answer 22

ventral primary rami (T1 - T11)

motor branches innervate muscle

sensory branches innervate lateral and anterior skin

Question 23

What supplies intercostal spaces 1 & 2?

Answer 23

supreme thoracic a

supreme intercostal a

Question 24

What supplies intercostal spaces 3 - 11?

Answer 24

posterior intercostal a

Question 25

What supplies the skin overlaying intercostal spaces 1 - 6 and the thymus?

Answer 25

anterior intercostal a

Question 26

what supplies the anterior intercostal spaces 7 - 9?

Answer 26

musculophrenic a

Question 27

What pleura lines the superior diaphragm?

Answer 27

diaphragmatic pleura

Question 28

What pleura covers the surface of the lungs?

Answer 28

visceral pleura

Question 29

Where is the right and left costodiaphragmatic recess found?

Answer 29

on the right and left side of the thorax below their respective lungs, but above the diaphragm

Question 30

Where is the costomediastinal recess?

Answer 30

on both sides of the heart, but above the diaphragm

Question 31

Why are the pleural recesses clinically important?

Answer 31

these are empty spaces that can be occupied by bacteria during infection

Question 32

What pleura lines the internal surface of the thorax?

Answer 32

parietal pleura

Question 33

What structure contains the lungs?

Answer 33

Pleural sacs

Question 34

What pleura covers the ribs and intercostal spaces?

Answer 34

costal pleura

Question 35

what provides sensory for pain and irritation to the costal pleura and the periphery of the respiratory diaphragm?

Answer 35

intercostal nerves

Question 36

What provides sensory for pain and irritation to the mediastinal pleura and the diaphragmatic pleura?

Answer 36

phrenic nerves

Question 37

What lies directly below the right side of the respiratory diaphragm?

Answer 37

The liver

Question 38

What is the angle of Louie?

Answer 38

Synonymous with sternal angle

Question 39

Where will you find the vein, artery, and nerve for the intercostals?

Answer 39

Between the inner intercostals and innermost intercostals

Question 40

What does the Internal Thoracic a (mammary a) divide into?

Answer 40

Musculophrenic a (intercostal a 7-9)

Superior epigastric a