Brainscape's Knowledge GenomeTM

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


See full index

ANAT 315 - human musculoskeletal > thoracic wall > Flashcards

thoracic wall Flashcards

1
Q

What is the thoracic/rib cage?

A

The osteo-cartiligenous structure that encloses the thorax and thoracic viscera

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

What bounds the thoracic cage?

A

Bounded by
-thoracic vertebrae
-ribs
-sternum

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

What walls off the thoracic cage?

A

Walled off by muscles & connective tisues with a few key passageways

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

What are the aperture of the rib cage?

A

superior thoracic aperture (thoracic inlet)
inferior thoracic aperture (thoracic outlet)

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

At what level of the vertebral column does the thoracic cage end?

A

T12

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

What is contained in the costal groove?

A

Intercostal neurovascular bundles (VAN)

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

true VS false ribs

A

ture: 1-7
Direct insertion to the sternum via costal CARTILAGE

false: 8-10
Indirect insertion on sternum via costal MARGIN

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

How can the position of the components of the intercostal neurovascular bundles be recognized?

A

VAN
Vein
Artery
Nerve

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

What are the articular surfaces of the rib?

A

3 articular surfaces
-costal cartilage (anterior-sternum)
-head (posterior-vertebrae)
-tubercule of the rib (posterior-vertabrae)

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

What are the rib articulations with the thoracic vertebrae?

A

2 posterior joints (rib-vertebrae)
-costotranverse joint (rib-TP)
-costovertebral joint (rib-VB)

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

Define the costotransverse joint

A

T-T
Tubercule of the rib articulates w the costal facet on TP of same nubered vertebra

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

Define the costovertebral joint

A

Head of the rib articulates with 2 demi-facets
1-VB of the same numbered vertebra
2-inferior demifacet of the VB above

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

What are the atypical ribs?

A

1
10
11-12

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

Why is rib 1 atypical?

A

-short, flat, horizontally oriented
-anterior groove: subclavian vein
-posterior groove: subclavian artery
-costovertebral jt: articulates w VB of own level only
NO FACET ON C7

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

Why is rib 10 atypical?

A

costovertebral jt: articulates w VB of own level only

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

Why are rib 11-12 atypical?

A

-no tubercule or necks
-short (floating)
-costovertebral jt: articulates w VB on own level only

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

What are the different parts of the sternum? And their levels on the vertebral column

A

Jugular notch (T2)
manubrium
manubriosternal joint/sternal angle (T4/T5)
sternum
xiphisternal junction (T9)
xiphoid process

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

What are the anterior joints of the thoracic cage?

A

3 articulations
-costochondral (rib-costal cartlige)
-sternochondral(sternum-costal cartilage)
-interchondral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Where are the interchondral joints found?

A

Btw costal cartilages ONLY of ribs 6-10
variable btw 6 & 7

20
Q

What type of joint is the costochondral jt?

A

Solid: synchondrosis

21
Q

What type of joint is the strenocostal jt?

A

Synovial: plane/gliding
EXCEPTION: @1st rib - fused = synchondrosis

22
Q

What type of joint is the interchondral jt?

A

Uniquely synovial

23
Q

True or false?
Bigger movement of the thoracic cage is seen superiorly:larger inferiorly

A

False
Bigger movement of the thoracic cage is seen inferiorly & smaller superiorly

24
Q

What are the movements of the thoracic cage during basic respiration?

A

Pump handle mvmt
-Anterior to posterior axis/transverse axis (1-6)

Bucket-handle mvmt
-lateral (6-12)

25
Q

Which joints allow a volume change of the thoracic cavity in an anterior to posterior axis?

A

Costotransverse/vertebral joints for ribs 1-6

26
Q

Which joints allow lateral changes in thoracic cavity volume?

A

Costotransverse,costovertebral & sternochondral(6,7) joints for ribs 6-12

27
Q

What are the muscles of the thoracic wall that allow forced inspiration?

A

elevation of the ribs
external intercostal muscles

28
Q

What is the fiber direction and the role in forced respiration of the external intercostal muscle?

A

Fiber direction: anteroinferior (hands in pocket)
Role: elevate ribs (forceful inspiration)

29
Q

What is the fiber direction and the role in forced respiration of the internal intercostal muscle?

A

fiber direction: medial & superior (hands on chest)
role: depress ribs (forceful expiration)

30
Q

What is the fiber direction and the role in forced respiration of the innermost intercostal muscle?

A

fiber direction: medial & superior (hands on chest)
role: depress ribs (forceful expiration)

31
Q

What is the fiber direction and the role in forced respiration of the transversus thoracis muscle?

A

fiber direction: sternum body - xiphoid process (ribs 2-6)
role: depress ribs (forceful expiration)

32
Q

What are some clinical landmarks of thoracic dermatomes?

A

T4-nipple
T6-skin over the xiphoid process
T10-umbilicus

33
Q

What is an example of a pathology affected the thoracic dermatomes?

A

Shingles: varicella zoster virus

Pathology (pain/rash) is associated with one nerve root

34
Q

Describe the neurovasculature supply of the thoracic wall

A

Thoracic aorta
Posterior intercostal artery (p.i.c)
Anterior intercostal artery (a.i.c)
Internal thoracic artery

35
Q
A
36
Q

Describe the venous drainage of the neurovasculature of the thoracic wall

A

Paired artery/vein for pic, aic & internal thoracic but posterior drainage differs

37
Q

What are the borders of the neurovasculature bundle?

A

VAN bundle runs btw internal and innermost intercostal muscles (under costal groove)

38
Q

What is the clinical significance of the neurovascular bundle location?

A

Insertion of a chest tube on top of the rib (angle the tube to avoid hitting the VAN bundle)

39
Q

What is define as the floor of the thoracic cage?

A

Diaphragm

40
Q

What are landmarks of the diaphragm?

A

right dome: slightly above T5 (bcs of liver)
left dome: inferior to T5

41
Q

What are the 2 skeletal muscles near the diaphragm joined by?

A

Central tendon

42
Q

Which dome of the diaphragm is higher? And why?

A

Right is slightly above T5 because of the liver

43
Q

Which muscle is involved in quiet respiration?

A

Diaphragm

44
Q

On what axis does the diaphragm make the thoracic cavity change?

A

coronal axis - superior to inferior axis

45
Q

Which nerve innervates the diaphragm?

A

phrenic nerve: anterior rami of spinal nerve C3-C5

C3,4,5 keeps the diaphragm alive

46
Q

What is the clinical significance of the innervation of the diaphragm?

A

Paralysis of C3,4,5 can affect one side of the diaphragm
-No depression on the paralysed side

ANAT 315 - human musculoskeletal (13 decks)

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