Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Respiratory > Anatomy Of Thoracic Wall > Flashcards

Anatomy Of Thoracic Wall Flashcards

0
Q

How many ribs are there?

A

12

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

What is included in the thoracic wall?

A

Thoracic cage
Muscles between ribs
Skin
Muscles which cover anterolateral wall

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Which ribs are true ribs? What does this mean?

A

Ribs 1-7

Connected by costal cartilages to the sternum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Which ribs are false ribs? What does this mean?

A

Ribs 8-10

Connected to the cartilage of the rib above them

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Which ribs are floating ribs? What does this mean?

A

Ribs 11 and 12

They end free in abdominal muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Which ribs are typical ribs?

A

3-9

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Structure of typical ribs?

A

Head has two articular facets separated by a crest
The neck connects the head of the rib with the body
The tubercle is the at the junction of the neck and body.
The body/shaft has a concave surface with a costal groove

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Function of the articular facets on the head of a true rib?

A

One facet articulates with the vertebra

The other articulates with the vertebra superior

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the function of the tubercle on a typical rib?

A

Articulates with the transverse process of the vertebra

Attachment for costotransverse ligament

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the function of the intercostal groove

A

Provides protection for the intercostal nerve and vessels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Which ribs are atypical?

A

1, 2, 10, 11, 12

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What makes the first rib atypical?

A

Very short and board and curved

Has one facet

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What makes the second rib atypical?

A

Poorly marked costal groove

Tuberosity for serratus anterior

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What makes ribs 10, 11 and 12 atypical?

A

One facet on the head and articulate with a single vertebra

11 and 12 have no tubercle or neck because they are floating

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What articulates at the costotransverse joint?

A

Tubercle of rib and transverse costal facet of corresponding vertebra

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What articulates at the costovertebral joint?

A

Where head of rib articulates with superior costal facet of the corresponding vertebra and inferior costal facet of the vertebra above
So two for each rib

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Name the three parts of the sternum

A

Manubrium
Body
Xiphoid process

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Features of the manubrium?

A

Concave
Depression - jugular notch
Fossa lined with cartilage which articulate with clavicle
Facet for articulation with costal cartilage of first rib
Demifacet for second rib

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Features of the body of the sternum?

A

Flat and elongated

Lateral edges have many facets

19
Q

Which ribs does the body of the sternum articulate with?

A

3-6

Has demifacets for articulation with ribs 2 and 7

20
Q

Features of the xiphoid process?

A

Smallest part of the sternum
Located at T10
Largely cartilaginous - ossified in later life
Articulates with cc of 7th rib

21
Q

Name the intercostal muscles

A

External intercostals
Internal intercostals
Innermost intercostals

22
Q

How many pairs of external intercostals are there?

A

11

23
Q

What are the external intercostals continuous with?

A

The external oblique

24
Q

Innervation of the intercostal muscles?

A

Intercostal nerves

25
Q

Action of the external intercostals?

A

Increase volume of thoracic cage during forced inspiration

26
Q

What direction do the external intercostals run?

A

Inferoanteriorly

27
Q

What direction do the internal intercostals run?

A

Inferoposteriorly

28
Q

Action of the internal intercostals?

A

Decrease volume of the thoracic cage during forced expiration

29
Q

What are the innermost ICs and internal ICs separated by?

A

The intercostal neurovascular bundle

30
Q

Action of the innermost intercostals?

A

Decrease volume of thoracic cage during forced expiration

31
Q

Where do the transverse thoracic muscles attach?

A

Originate from lower manubrium and xyphoid process

Attach to costal cartilages of ribs 2-6

32
Q

Innervation of transverse thoracics?

A

Intercostal nerve

33
Q

Action of the transverse thoracic muscles?

A

Pull ribs down providing a weak expiratory function

34
Q

Functions of diaphragm?

A

Separates thoracic cavity from the abdominal

Alters volume of thoracic cavity and lungs

35
Q

Attachments of the diaphragm?

A

Lumbar vertebrae and arcuate ligaments (L1-3)
Costal cartilages of ribs 7-12
Xiphoid process of the sternum
Central tendon fuses sign inferior surface of fibrous pericardium

36
Q

Actions of diaphragm?

A

Inspiration - contracts and flattens, increasing vertical diameter of the thoracic cavity
Expiration - diaphragm relaxes and turns to its dome shape

37
Q

Innervation of the diaphragm?

A 
Phrenic nerve (left and right)
C3, 4, 5
38
Q

Arterial supply of the diaphragm?

A

Inferior phrenic arteries
They arise from the abdominal aorta

Superior phrenic, pericardiacophrenic and musculophrenic arteries

39
Q

Venous drainage of the diaphragm?

A

Inferior phrenic vein
Superior phrenic vein
Pericardiacophrenic vein
Musculophrenic vein

40
Q

Movements of the ribcage?

A

Upper ribs move in a pump-handle movement to increase anterior-posterior diameter of the thorax

Lower ribs move in a bucket handle movement - increases lateral diameter of the thorax

41
Q

What are the three major arteries supplying the thoracic wall?

A

Thoracic aorta
Subclavian artery
Axillary artery

42
Q

In the neurovascular bundle, what is the order of structures from top to bottom?

A

Vein
Artery
Nerve

43
Q

Where do most of the posterior intercostal veins drain into?

A

Azygous/hemiazygous venous system to the superior vena cava

44
Q

Where do the two anterior and one posterior intercostal arteries arose from?

A

Posterior - aorta

Anterior - internal thoracic arteries

45
Q

Where does the internal thoracic artery arise from?

A

Subclavian

46
Q

Roots of the intercostal nerves?

A

Anterior rami of T1-T12

Respiratory (17 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions