CVS Anat Flashcards

(use this in addition to Netter's cards!)

1
Q

What are the 2 layers of the pericardium (+ sub-layers?)

A

Fibrous pericardium +
Serous pericardium
- Parietal layer (stuck to fibrous)
- Visceral layer (stuck to heart)

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2
Q

Where is the pericardial cavity?

What does pericardial cavity contain?

A

Between Visceral and parietal layer of serous pericardium.

Serous fluid.

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3
Q

Another name for visceral layer of serous pericardium?

A

Epicardium

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4
Q

Nerve supply of pericardium?

A

Phrenic nerve (w somatosensory & motor fibres):
- Fibrous pericardium +
- Parietal layer of serous pericardium

Symp. fibres arising from T1-4 + Vagus nerve (psymp): (viscerosensory n motor)
- Visceral layer (stuck to heart)

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5
Q

3 cavities that thoracic cavity contains?

A

mediastinum (heart + root of great vessels) + 2 pulmonary cavities

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6
Q

Boundaries of superior vs inferior mediastinum?

Divisions of inferior mediastinum?

Structures in anatomical divs of inf mediastinum?

A

sup: T1 - T4-5 (sternal plane)
inf: T4-5 - diaphragm

Divs: Ant, Middle, Post
Ant: in front of heart
Middle: heart + root of great vessels
Post.: behind heart

Structures:
Ant: thymus, etc
Middle: =
Post.: thoracic vertebrae, vagus nerve, etc

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7
Q

What structures does posterior mediastinum contain?

A

TVATET (see notes)

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8
Q

Arrangement of root of great vessels?

A

SAP:
SVC
Asc Aorta
Pul. trunk

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9
Q

Phrenic vs vagus nerve runs?

A

Phrenic front
Vagus vehind root of lung

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10
Q

3 branches of aortic arch?

A

(from R -> L) BCS
right brachiocephalic artery = brachiocephalic trunk
left common carotid artery
left subclavian ARTERY

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11
Q

Is aortic arch in inf/sup mediastinum and why

A

Sup; it starts and ends at T4-5 level

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12
Q

Location of aorta as it descends?

A

Left –> center

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13
Q

Location of azygos vein as it ascends?

A

on right side of body (joining IVC and SVC)

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14
Q

Where does azygos vein drain blood from and what veins does it receive?

A

thorax region structures

esophageal vein, etc

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15
Q

Fill the 2 lymphatic drainage locations -> ducts in body

Where do each duct drain?

A

(see pic of guy)

  • right side of H&N + right upper limb –> right lymphatic duct
  • everywhere else of body –> left lymphatic duct (aka. thoracic duct)

RLD into right braachioceph vein
LLD into left =

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16
Q

Where does phrenic and vagus nerve arise from?

A

phrenic (C2-5 spinal seg)
vagus (CNX)

17
Q

What fibres does phrenic and vagus nerve contain?

A

phrenic:
- somatosensory + somatomotor
- (lesser sympathetic fibres)
(note: phrenic is mainly a somatic nerve)

vagus:
- psymp fibres
(note: vagus is mainly a psymp, ANS nerve)

18
Q

What does phrenic and vagus nerve innervate?

A

phrenic:
somatosensory and somatic-motor to:
- diaphragm (separate phrenic nerve for left n right dome) (think: hemiparalysis of diaphragm)

somatic-sensory to:
- mediastinal ad diaphragmatic pleura of lungs
- fibrous and parietal layer of visceral pericardium of heart
- peritoneum (another serous mem?)

vagus:
- heart (note: psymp fibres in vagus innervates SA and AV node!)
- lungs
- GI tract

19
Q

Recurrent laryngeal nerves arise from?

Both supply?

A

Vagus nerve

RLNs supply larynx/ laryngeal region

20
Q

LRLN hooks under?

A

Ligamentum arteriosum (a fibrous band from left PA to arch of aorta)

21
Q

Is RRLN part of mediastinum, why?

A

No its above first rib on right side of body

22
Q

Which part of heart lies anterior to esophagus (fish bone!)

A

LA

23
Q

Imp relations of esophagus?

A

Ant: trachea, L bronchus (aft bifurct), LA

Post: Thoracic duct, Azygos vein, Thoracic vertebrae

LHS: aortic arch

24
Q

Where are the 3 constrictions of esophagus?

A
  • jxn between pharynx and esophagus
  • where aortic arch crosses it on left
  • where it herniates diaphragm at level T10 (recall: I EV ATA triangle)
25
Q

At which levels are the 3 diaphragmatic openings and what structures pierce diaphram at each level?

(Hint: triangle)

A

I
EV
ATA

+
see vv good pic on anat notes

26
Q

Outline conduction system of heart and where they are located?

A

SA node (near opening of SVC into RA)
AV node - above coronary sinus
Bundle of His - (in interventricular septum?)
Right bundle branch - runs through moderator band in RV
Left bundle branch
Purkinje fibres

27
Q

Read cardiac outline on CXR.

A

(see radiology notes in M1 CA2 cheatsheet for ans)

28
Q

Explain in one sentence how CABG works

A

A segment of long sahenous vein is connected to ascending aorta and then distal to the coronary artery stenosis.

29
Q

Outline the 2 circulation systems in body (pulmonary + systemic). (focus on how they flow through heart and great vessels)

A

(can watch vid)

30
Q

What determines coronary dominance?

A

Which (RCA/LCA or their branches) supply PDA.

31
Q

(For coronary arteries and veins, do all AR qns on notes)!!

A