Thoracic wall, lungs & middle mediastinum Flashcards
what encloses the thoracic cavity
Thoracic wall and diaphram
compartments of the thoracic cavity
Left and Right Pleural cavities
Mediastinum
what bounds the inferior thoracic apperature
xiphoid process
costal cartilage
T12
12th ribds
what bounds the thoracic inlet
Manubrium of the sternum
Rib 1
T1
where is the sternal angle
At the articulation point of the manubrium of the sternum and the body of the sternum
vertebral level of sternal angle
T4-T5
land marks of the sternal angle
Bifurcation of the trachea
arch of the aorta
articulation of rib 2
Posterior thoracic wall
Thoracic vertebrae
Lateral thoracic wall
Ribs and Intercostal mm
Anterior thoracic wall
Sternum (manubrium, body, xiphoid process)
part of the manubrium for the sternoclavicular joint
Clavicular notch
where does the body of the sternum meet the manubrium
Sternal angle
the lowest point of the sternum
Xiphoid process
WHat does the head of the rib articulate with
2 vertebral bodies and 1 disc
what does the Tubercle of the rib articulate with
the transverse process
what large portionof the rib
The body
The region of greatest curve on the body of a rib
Angle
What forms the costal groove
Formed by intercostal V, A, and N
where is the pectoral region
External to anterior thoracic wall
roll of the pectoral region
anchors upper limb to the trunk
what is the superficial compartment of the pectoral region contain
Skin, supericial fascia and boob
what does the deep comparment of the pectoral region contain
Muscles and associated strucutres
Development of boobs in men in women
Well developed in women
Rudimentary in men
what does the breast consist of
Secretory glands in fatty matrix
Overlying skin and superficial fascia
What supplies blood too the lateral breast
Vessels from axillary A (superior thoracic, thoracoacromial, lateral thoracic, subscapular)
what supplies blood to the medial breast
Branches from internal thoracic A
Branches from 2-4th intercostal aa
Lymphatics of breast drain to
Parasternal nodes
Axillary nodes
what does Curaneous innervates the breast
Lateral and anterior branches of 2nd to 6th intercostal nn
Muscles of the pectoral region
Pec major and minor
what are the heads of the pec major
Clavicular and sternocostal heads
What envelops the pec minor
Clavipectoral fascia
what are the intercostal
(span 1 rib) muscles
External
Internal
Innermost
what muscles span 2 ribs
Subcostal
transversus thoracis
direction of external intercostals
Run down and towards the midline
direction of internal intercostals
Run down and to the lateral
direction of innermost intercostals
Run down and to the lateral
how do artiers, vein and nerves arange themselves in the intercostal
Below the rib going down: V, A, N
Above the rib going up: V, A, N
where are intercostal V,A,N
Between the internal and innermost intercostal muscles
where do anterior intercostal arteries come of
Internal thoracic artery (run on the side of the sternal
where do posterior intercostal arteries come off
The thoracic aorta
top two arties come off the supreme intercostal artery
anterior intercostal veins drain to
Anterior thoracic Vein
posterior intercostal veins drain to
azygos vein
LEft superior intercostal vein drains into
Left brachiocephalic vein
Right superior intercostal vein drains into
azygous veins
where do the intercostal V, A, N day
Lie in the costal groove
where is the costal groove
Inferior margin of the rib