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CV System > Thorax 1: Body Cavities and Serous Membranes > Flashcards

Thorax 1: Body Cavities and Serous Membranes Flashcards

1
Q

Name the muscles overlying the thoracic cage

A

Pectoralis major
Pectoralis minor
Latissimus dorsi
Serratus anterior

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2
Q

What are the attachments of pectoralis major?

A

clavicle, costal cartilages and sternum to humerus (anterior lip of intertubercular groove)

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3
Q

Movements of pectoralis major

A

shoulder flexion and adduction

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4
Q

What are the attachments of Pectoralis minor?

A

Ribs 3,4 and 5 to coracoid process

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5
Q

What is pectoralis minor a landmark for?

A

axillary artery and brachial plexus

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6
Q

what is the function of pectoralis minor?

A

stabilises scapula

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7
Q

name the attachments of lat dorsi

A

iliac crest, lower t and L spines to humerus (floor of intertubercular groove)

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8
Q

movements of lat dorsi

A

shoulder extension and adduction

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9
Q

attachments of serratus anterior

A

upper 8 ribs to medial border of the scapula

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10
Q

movements of serratus anterior

A

scapular protraction and rotation in abduction

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11
Q

Describe the breast tissue

A

glandular tissue in fibrofatty stroma

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12
Q

how many breast ducts are there

A

16 converging on the nipple

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13
Q

which blood vessels supply the breast

A

Axillary and internal thoracic arteries

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14
Q

Which ribs do the breast relate to?

A

Ribs 2-6

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15
Q

Describe Level 1 tumour spead

A

Anterior/pectoral group, lateral to pec minor

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16
Q

Describe Level 2 tumour spread

A

Central group, deep to pec minor

17
Q

Describe Level 3 tumour spread

A

Apical group, medial to pec minor

18
Q

Aside from the lungs and heart, what structures lie within the boundaries of the rib cage?

A

Lung, stomach, spleen and kidneys

19
Q

Name the two movements of inhalation

A

Pump handle and bucket handle

20
Q

Describe pump handle movement

A

rib elevation pushes sternum out and up to increase thoracic anterior-posterior diameter

21
Q

describe bucket handle movement

A

rib eversion to increase lateral diameter of the throax

22
Q

what causes exhalation

A

Automatic, passive movement by elastic recoil of the lungs

23
Q

Name the borders of the thoracic inlet

A

T1, 1st rib and costal catilage and manubrium

24
Q

Name from anterior to posterior the vessels crossing the 1st rib

A

SC Vein, SC Artery and inferior trunk of the brachial plexus

25
Q

Name the nerves found passing through the thoracic inlet

A

Vagus, recurrent laryngeal and phrenic

26
Q

what is the function of the phrenic nerve

A

sole motor supply to the diaphragm

27
Q

Name the borders of the thoracic outlet

A

T12, ribs 11 and 12, costal margin and xiphoid process

28
Q

Name the 3 openings in the diapragm

A

Caval, oesophageal and aortic openings

29
Q

Name the level and contents of the caval opening

A

T8
inferior vena cava
R phrenic nerve

30
Q

Name the level and contents of the oesophageal opening

A

T10
oesophagus
vagal trunks
left gastric vessels

31
Q

Name the level and contents of the aortic opening

A

T12
Aorta
Azygous vein
Thoracic duct

32
Q

Name the 4 corners of the heart

A

2nd L CC
3rd R CC
6th R CC
L 5th interspace

33
Q

What divides the superior and inferior mediastinum

A

The plane between the sternal angle and 2nd CC and T4/5

34
Q

What lies directly behind the breastbone?

A

anterior mediastinum

35
Q

what are the divisions of the inferior mediastinum

A

middle and posterior mediastinum

36
Q

What is found in the anterior mediastinum

A

Thymus

37
Q

What is found in the superior mediastinum

A

Trachea and oesophagus
aortic arch
phrenic and vagus nerves
SVC

38
Q

What vessels enter the SVC

A

L and R brachiocephalic and azygous vein

39
Q

What is found in the posterior mediastinum

A

Aorta
oesophagus
thoracic duct
azygous veins

CV System (18 decks)

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