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Flashcards in Mediastinum and Heart Deck (71)
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1

Mediastinum

Region of thoracic cavity that contains all thoracic viscera besdies lungs and surrounding pleura

2

How is mediastinum divided?

Superior and inferior by plane passing from sternal angle to inferior border of 4th thoracic vertebrae

3

Inferior mediastinum divided into

Anterior, middle, and posterior regions

4

Superior mediastinum contains

Aortic arch and all branches
Brachiocephalic veins and 1/2 of sup vena cava
Vagus, phrenic, left recurrent laryngeal nerves
Esophagus
Trachea
THoracic duct
Thymus

5

Anterior mediastinum contains

Basically nothing
Some lymph nodes and fat...thymus in children

6

Middle mediastinum contains

Heart
Pericardial sac
Ascending aorta
INferior 1/2 of sup vena cava
Termination of azygos vein
Pulmonary trunk and branches
Pulmonary veins
Phyrenic nerves

7

Posterior mediastinum contains

Bifurcation of trachea
Descending aorta
Esophagus
Azygos and hemiazygos veins
THoracic duct
Vagus and splanchnic nerves
Sympathetic chain

8

How is heart attached to diaphragm?

central tendons attached to fibrous pericardium

9

Apex of heart is where what two parts come together?

Ventricles

10

Fibrous pericardium and nerve on surface

Inelastic fibrous sac surrounding heart
Phrenic nerves

11

Parietal pericadium

Just deep to fibrous pericardium
Serous layer

12

Visceral pericardium...what is it continuous with and other name for it

Serous layer on surface of the heart
Continuous with parietal at roots of great vessels
Epicardium

13

Pericardial cavity

Space between visceral and parietal layers
Only contains a few drops of fluid

14

Adhesions of pericardial cavity

Restrict heart movement and compromise cardiac function

15

Pericarditis

INflammation of pericardium
Can have effusion into pericardial cavity and compression of the heart

16

Cardiac tamponade

Extensive fluid in pericardial cavity...compresses heart

17

Pericardiocentesis

Draining of fluid from pericardial cavity

18

Transverse pericardial sinus separates

Venous and arterial ends of the heart

19

Oblique pericardial sinus

Pocket-like recess in the pericardial cavity posterior to base of the heart

20

Transverse pericardial sinus can be used to isolate

Ascending aorta and pulmonary trunk

21

Base of heart on which surfaces?

Posterior and superior

22

Apex of heart projects which way and which intercostal space

Anterioly and inferior
5th intercostal space

23

Coronary sulcus

Atrioventricular sulcus

24

Anterior and posterior interventricular sulcus

Marks position of interventricular septum on anterior or diaphragmatic surface surface

25

Surfaces of heart

Anterior/sternocostal
Posterior (base)
Inferior or diaphragmatic

26

Auricles fucntion and derivation

Increases capacity of atria
Ear like pouches
Derived from primitive atria
Right and left atrium

27

Crista terminalis derivation and mistaken for

Muscular right in right atrium seprating smooth from rought portion of internal wall of right atrium
Intracardiac mass
Right atrium only

28

Rough and smooth portion of atria derivations

Rough - primitive atrium
Smooth - sinus vensosus

29

Pectinate muscles

Ridges on rough portion of internal wall of both right and left atria
Right and left atrium

30

Fossa ovalis and what is it a remnant of?

Depression of interatrial septum
Forament ovale
Right only