Thoracic Wall And Lungs Flashcards by nina bernhardt

What type of joint is the Manubriosternal joint and the xiphisternal joint

Symphysis joint
- but xiphisternal joint ossifies and becomes a synostosis joint

How well did you know this?

Not at all

Perfectly

Superior thoracic aperture border

Posterior: T1
Lateral: medial border rib 1 and coastal cartilage
Anterior: superior Manubrium

How well did you know this?

Not at all

Perfectly

Superior thoracic aperture content

Pleural cavity, apex of lungs, brachial plexus, subclavian A&V, esophagus, trachea, common corotid A, internal jugular A, phrenic N, vagus N

How well did you know this?

Not at all

Perfectly

Inferior thoracic aperture border

Post: T12
Lat: rib 12, tip of rib 11, rib 10, coastal margin
Ant: xyphoid process

How well did you know this?

Not at all

Perfectly

Inferior thoracic aperture content

Almost all of diaphragm, esophagus, inferior vena cava, aorta

How well did you know this?

Not at all

Perfectly

Sternocoast joint types

Rib 1 + manubrium = synchondrosis
Rib 2-7 + sternum = synovial planar jt

How well did you know this?

Not at all

Perfectly

Costotransverse jt

Coastal tubercle of rib and articulate facet on TP of vertebrae
- synovial planar

How well did you know this?

Not at all

Perfectly

Costovertebral Jt

Synovial
Ribs 2-9 + demifacet of 2 adj vertebrae
- vertebrae at same level and level above
Rib 1,10-12 + demifacet of 1 adj vertebrae at same level

How well did you know this?

Not at all

Perfectly

Costovertebral joint ligaments

Radiate lig (intrinsic)
Intra articular (extrinsic from rib head to intervertebral disk)

How well did you know this?

Not at all

Perfectly

Direction of external and internal intercostal

External: anterior and inferior
Internal and inner most: posterior and inferior

How well did you know this?

Not at all

Perfectly

Branches of ventral rami thoracic spinal nerves

1 motor branch to each or the 3 intercostal muscles within each space
3 cutaneous branches in each space
- lateral cutaneous
- ant cutaneous
- post cutaneous

Travel between internal and inner most intercostal muscle

How well did you know this?

Not at all

Perfectly

Subclavian A feeds into ___ which runs parallel to the ___ and then branches into the ___ which runs in the intercostal space

Internal thoracic, anterior internal thoracic A

How well did you know this?

Not at all

Perfectly

Posterior intercostal A is a branch of ___\

Descending aorta

How well did you know this?

Not at all

Perfectly

Visceral pleura of lung is in touch with ___ and parietal pleura is in touch with ___

Lung tissue, rib cage

How well did you know this?

Not at all

Perfectly

What are gutters formed by

Parts of the parietal pleura become continuous with one another

How well did you know this?

Not at all

Perfectly

Parts of the parietal pleura

Costal part- inner surface of ribs
Diaphragmatic- covers top of diaphragm
Mediastinal - in touch with mediastinum

Inferior border of lung anterior, laterally and posterior

Rib 6,8,10

Lateral surface of lung content

Apex
Horizontal fissure (R lobe only)
Oblique fissure
Costo diaphragmatic recess

Medial surface of lung content

Hilum at the center with root of lung content
- branches of bronchii
- branches of pulmonary V
- branches of pulmonary A

Mediastinum borders

Sup: superior thoracic aperture
Inf: diaphragm
Lat: left and right pleural cavities
Ant: sternum
Post: vertebral column

Superior mediastinum border and content

Above T4/T5
Trachea, esophagus, vagus N, phrenic N, arch of aorta (brachiocephalic, left common carotid and left subclavian A) brachiocephalic V, internal jugular V, subclavian V

Inferior mediastinum content

Thymus

Posterior mediastinum border and content

Between heart and vertebral column
Left view: accessory hemiazygos, hemiazygos, descending aorta
Right: esophagus, azygos V
Middle: thoracic duct, sympathetic trunk

Heart surface markings

Sup right: 3rd CC, 1 inch right from sternum
Sup left: 2nd intercostal space, 1 inch left of sternum
Inf right: 6th CC and 1jnch left of sternum
Inf left/apex: 5th intercostal space, 3 in left of sternum

Layers of heart

Visceral serious layer/epicardium - attached to heart Parietal/pericardium - attached to inner surface of fibrous pericardium Fibrous pericardium - thick irregular connective tissue - becomes connective tissue with root of heart

5 surfaces

Posterior, anterior, inferior, left and right pulmonary surfaces

Parts of the posterior surface

Reflection between parietal and visceral layer Right atrium - superior and inferior vena Cava Left strum - 2 left and 2 right pulmonary veins Coronary sinus Coronary/atrioventricular sulcus

anterior surface content

Left ventricle - ascending aorta Right ventricle - pulmonary trunk Left and right auricle Anterior interventricular sulcus (between ventricles)

Inferior surface of lung

Left and right ventricle Posterior interventricular sulcus

Right atrium content

Pectinate muscle (makes up wall) Interatrial septum (left wall on R atrium) - fossa ovalis: closed temporary opening between atria Coronary sinus office: opening of coronary sinus Tricuspid valve: regulates flow from right atrium to ventricle

Right ventricle content

Tricuspid valve Pulmonary semi lunar valve Trabeculae carnea Papillary muscle Chordea tendinae Moderator band

Left atrium

Pectinate muscle Interarterial septum - fossa ovallis 4 pulmonary veins Bicuspid valves

Left ventricle

Trabculae carnea Papillary muscle Chordea tendinae Aortic semilunar valves

Right coronary A path

Descending on right side through coronary sulcus —> enters inferior surface —> turns into posterior interventricular Artery in posterior interventricular groove

Left coronary A

Behind pulmonary A and splits soon after into anterior interventricular A and circumflex A

When are semilunar valves open

Open with ventricle contraction

Cardiac veins

Small cardiac vein Middle - travels with posterior interventricular artery Great - travels with anterior interventricular artery

Heart conduction

SA node sending impulse through atrium to AV node which sends impulse through ventricles via AV node AV bundles travels through interventricular septum and divides into 2 bundles of His This divides into Perkinje fibers that supply trabaculae carnea