Anatomy - Thorax Flashcards

(48 cards)

1
Q

How many cusps does the pulmonary valve have?

A

3

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2
Q

Vertebral level of pulmonary valve

A

T6

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3
Q

Where to auscultate each heart valve?

A

Aorta - 2nd right ICS, parasternal edge

Pulmonary - 2nd left ICS, parasternal edge

Tricuspid - 4th left ICS, parasternal edge

Mitral - 4th left ICS, MCL

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4
Q

Tributaries of azygous vein

A

‘Right handed people love eating burgers’

Right superior intercostal
Hemiazygous/ accessory hemiazygous
Pericardial
Lower right posterior intercostals
Esophageal
Bronchial

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5
Q

Where do the vagus and phrenic nerves pass in relation to lung hilum

A

Vagus - posterior, usually more medial
Phrenic - anterior, usually more laterally

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6
Q

Leads + affected artery in inferior MI

A

Leads: III, aVF,II

Artery - usually RCA

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7
Q

Leads + affected artery in anterior MI

A

Leads: V1-4, aVR

Artery - LAD/ LCA

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8
Q

Leads + affected artery in lateral MI

A

Leads: aVL, I, V5-6

Artery: LCx

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9
Q

Where is the lung groove for:

1)azygous vein
2)aorta

A

1)azygous vein - right lung, post to hilum
2)aorta - left lung, poster/superior to hilum

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10
Q

Surface area of base of lungs

A

6th rib MCL > 8th MAL > 10th at vertebral column

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11
Q

Vertebral level of 1) carina, 2) lung hilum

A

Carina - T4
Hilum - T5-7

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12
Q

How many segments does each lung have

A

10

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13
Q

Nerve supply to intercostal muscles?

A

Intercostal nerves (ant rami T1-11) + their collaterals

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14
Q

Where is the blockage in subclavian steal syndrome

A

Proximal to vertebral artery

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15
Q

What is thoracic outlet syndrome

A

Compression of neuromuscular bundle between scalene medius +Anterior - brachial plexus + subclavian artery

Causes neuromuscular sx in arm

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16
Q

Where to site a chest tube

A

5th ICS (above lower rib), MAL

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17
Q

Why can chest tube insertion cause bradycardia

A

Due to irritation of vagus nerve

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18
Q

Where does the phrenic nerve run-in relation to scalene muscles

A

Anterior to anterior scalene

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19
Q

Contents of middle mediastinum

A

Heart/ pericardium
Aortic root
Main bronchi
Arch of azygous vein

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20
Q

Contents of anterior mediastinum

A

Thymus remnants
Lymph nodes
Fat

21
Q

Contents of superior mediastinum

A

Nerves: phrenic, vagus + left RLN, splanchnic

Vessels: aortic arch + branches (3), SVC + branches (azygous, brachiocephalic, left up + supreme intercostal)

Organs: oesophagus, trachea, thoracic duct,

22
Q

Contents of posterior mediastinum

A

Vessels: aorta, azygous vein

Nerves:vagus, splanchnic, symp trunks

Organs: oesophagus, trachea, thoracic duct, muscles (sternothyroid/hyoid)

23
Q

How do symp nerves leave the symp chain and go to their organs?

A

Spinal nerves for plexuses round vessels (cardiac/ pulmonary/ splanchnics)

24
Q

Boundaries of the mediastinum

A

Sup + Inf - level of T4/sternal angle

Middle - all pericardium

Ant + post = sternum/ vertebral bodies

Laterally = lung pleura

25
What level does the SVC: 1) arise from R + L brachiocephalic veins 2) enter middle mediastinum 3) enter RA
1) 1st costal cartilage 2) 2nd costal cartilage 3) 3rd costal cartilage
26
What chamber of the heart does JVP relate to
Right atrium
27
What level does the azygous drain into SVC? what does it drain?
T4 Post intercostals/ subcostal veins on the left (+lumbar)
28
What level do the hemi + accessory azygous veins drain into the azygous What do they drain
Accessory = T8 (oesophagus + 4-8th post intercostals) Hemi = T9 (9-11th post intercostals/ subcostal)
29
Sup > inf arrangement of intercostal neurovasc bundle
VAN Vein, artery, nerve
30
Nerve supply of the pleura
Parietal = intercostals + phrenic Visceral = autonomic pulmonary plexus (vagus+ symp trunk)
31
Which ribs are atypical
1,2 10-12
32
What ribs does the breast overly
2-6
33
Blood supply to breast
Mainly lateral thoracic artery Also - internal thoracic, post intercostals, thoracoacromial
34
Lymph drainage of breast
1) Axillary - into 3 levels (relative to pec minor - lat/deep/medial) (75%) 2) parasternal (20%) 3)post intercostal (5%) Also contralateral breast
35
Ligaments attached to odontoid peg
1) alar (> occiput) 2) Apical (occiput) 3) transverse ligament of atlas (across front)
36
Ligaments between C1 and C2
Anterior and posterior atlantoaxial Transverse ligament (part of cruciate, has inf and sup bands)
37
What is the joint called between the superior and inferior articular processes in vertebrae
Zygoapiphyseal joint
38
Structures passing through intervertebral foramen
Spinal nerve roots Dorsal root ganglion Recurrent meningeal nerves Spinal artery Communicating veins
39
Layers for LP
Skin Subcut fat/ fascia Supraspinous Interspinout Ligamentum flavim Epidural space + dura Arachnoid into CSF
40
What is the ligament nuchae
Extension os upraspinous ligament from C7- occiput Limits hyeprflexion
41
Level of conus of SC
L3 at birth L1/2 adult
42
Intervertebral joint type
2y cartilaginous
43
What is Batson's venous plexus and its significance
Venous network without valves within the spine that also connects deep pelvic veins from bladder (prostate, rectum) Spread for mets (as well as arterial/ direct)
44
Contents of epidural space win spinal cord
Venous plexuses (ant + post internal) Small arteries Fat + connective tissue Lymph Spinal nerve roots
45
Common tumours mets to spine
Kidney/ prostate Breast Lung Blood thyroid
46
What level do the pharynx/ larynx end to become trachea/ oesophagus
T6
47
What level does the vertebral artery enter the transverse foramen
C6
48
C6 level - what vessels enter/ leave thyroid
Inferior thyroid artery middle thyroid vein