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ESA 3 - Respiratory System > Anatomy of Respiratory System > Flashcards

Flashcards in Anatomy of Respiratory System Deck (189)
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1

What is the bony thorax made up of?

  • The thoracic vertebrae posteriorly
  • The ribs and intercostal spaces laterally
  • The sternum and costal cartilages anteriorly 

2

What happens to the thoracic cage superiorly?

It is continuous with the neck, at the thoracic inlet

3

What happens to the thoracic cage inferiorly?

The diaphragm separates it from the abdominal cavity

4

How many ribs are there?

12

5

What do the ribs articulate with posteriorly?

The vertebral column

6

How do the ribs articulate with the vertebral column?

Via the costo-vertebral joints

7

What do the ribs articulate with anteriorly?

  • Ribs 1-7 are connected to sternum
  • Ribs 8-10 are connected to costal cartilage alone
  • Ribs 11-12 have ends free in the abdominal muscles

8

How do ribs 1-7 connect to the sternum?

Via costal cartilages

9

What are ribs 11 and 12 known as?

Floating ribs

10

What ribs are considered 'typical'?

3-9

11

What do typical ribs have?

  • Head
  • Neck
  • Tubercle
  • Shaft

12

What does the head of the rib have?

Two articular facets

13

What are articular facets at the head of the rib for?

Articulation with the body of the corresponding vertebrae, and the vertebrae above

14

What does the neck of the rib do? 

Connects the head of the rib with the body 

15

At what level does the neck of the rib connect the head and the body? 

The level of the tubercle 

16

What does the tubercle of the rib contain? 

One articular facet 

17

What is the purpose of the articular facet of the tubercle of the rib? 

For articulation with the transverse processes of the corresponding thoracic vertebrae 

18

What shape is the shaft of the rib? 

Thin, flat, curved 

19

What happens at the angle of the rib? 

The shaft twists forward to form its characteristic curve 

20

What does the shaft contain? 

A costal groove

21

Where is the costal groove located? 

Close to the lower border of the shaft of the rib 

22

What does the costal groove do? 

Protects the intercostal vessels and nerve 

23

Label this diagram of a typical rib

  • A - Crest of head
  • B - Superior articular facet 
  • C - Tubercle 
  • D - Angle
  • E - Cup for costal cartilage

24

What are the typical features of most thoracic vertebrae? 

  • Independant
  • Have bodies, vertebral arches and seven processes

25

What are the 7 processes of the thoracic vertebrae for? 

Muscular and articular connections 

26

What are the characteristic features of thoracic vertebrae? 

  • Bilateral costal facets (demifacets)
  • Costal facets 
  • Spinous processes

27

Where do the demifacets of thoracic vertebrae occur? 

On the vertebral bodies, usually occuring in inferior and superior pairs 

28

What is the purpose of the vertebral body demifacets? 

Articulation with the heads of ribs 

29

Where are the costal facets of thoracic vertebrae found? 

On the transverse processes 

30

What is the purpose of the costal facets of thoracic vertebrae? 

Articulation with the tubercles of the ribs