CVR 1 Flashcards
Where most things happen in the chest?
2nd costal cartilage, angle of louie
What is at the back of the mediastinum?
Left ventricle
Base of breasts go from…
2nd to the 6th
How many lobes are there
Right - 3 lobes (horizontal fissure)
Left - 2 lobes
What ribs form the costal margin
VIII-XII (false ribs)
Where does the head of the rib insert
between vertebrae
Name the important parts of the vertebra
superior articular process
costal facet of transverse process
Superior costal facet
inferior articular process
Body
Disc
demifacets (articulate with rib
facet for articulation with tubercle of rib
spinous process
lamina
pedicle
Important landmarks of the rib
tubercle
head
neck
angle
costal groove
Articular facet
1st rib parts
scalene tubercle
Grooves
Parts of sternum
aticular for clavicle
articular for rib 1
articular demifacets of rib 2
artic facets of 3-6
artic facets of rib 7
xiphoid porcess
sternal angle
manubrium of sternum
jugular notch
What are the false ribs
floating ribs 8-12
the rib articulates with the spine where
seat the costotransverse joints and intra articular ligament
Also superior costotransverse ligament
Movements of inspiration
diaphragm descends
elevation of lateral aspect of ribs
sternum moves forward in inspiration
Superior to inferior order of intercostal vessels
intercostal verin artery nerve inferior to upper rib.
Superior to rib below is collateral branches.
These are sandwiched between innermost layer of intercostal muscle internal.
Arteries of ribs
anterior and posterior intercostals
Veins of the thoracic cavity
left brachiocephalic is fed by acessory hemiazygos vein and hemiazygos vein
In a cross section of the thorax go through the layers till the intercostal nerves
Serratus anterior is superficial to external intercostal muscles then internal intercostal muscle then innermost intercostal muscle then finally ventral ramus. Follow it laterally to internal and innermost where it changes to intercostal nerve.
What supplies sensory innervation of the skin in the lateral portion of body wall?
Anterior cutaneous nerves from sensory portion of intercostal nerve. Also parietal pleura is innervated by IC nerve giving off sensory nerves somatic sensory (skin)
Which intercostal nerve supplies T7 dermatome
T7
Where does the APR originate of:
T1
T2
T7-12
T1 - brachial plexus
T2 - intercostal N
T7-12 - abdomen and thorax
What is between the internal and innermost intercostals muscles
APR
Which artery descends bilaterally down the sternum from the subclavian arteries?
internal thoracic artery
Two big branches bifurcating from the SVC
left and right brachiocephalic vein which are in turn fed by hemiazygos veins draining from intercostal veins
Important lymph nodes of the thorax
intercostal, parasternal, diaphragmatic.
Sections of the inferior mediastinum
anterior, middle, posterior.
What demarcates inferior and superior mediastinum
T4 sternal angle
Describe the rib
The typical rib consists of a head, neck and body:
The head is wedge shaped, and has two articular facets separated by a wedge of bone. One facet articulates with the numerically corresponding vertebrae, and the other articulates with the vertebrae above.
The neck contains no bony prominences, but simply connects the head with the body. Where the neck meets the body there is a roughed tubercle, with a facet for articulation with the transverse process of the corresponding vertebrae.
The body, or shaft of the rib is flat and curved. The internal surface of the shaft has a groove for the neurovascular supply of the thorax, protecting the vessels and nerves from damage.
Describe rib 1
Rib 1 is shorter and wider than the other ribs. It only has one facet on its head for articulation with its corresponding vertebrae (there isn’t a thoracic vertebrae above it). The superior surface is marked by two grooves, which make way for the subclavian vessels.
Name the lobes of the lung?
Superior - apical anterior posterior
Middle - lateral medial
Inferior - anteior medial lateral posterior (basal)
Superior - apico posterior, anterior, superior lingular, inferior lungular
Inferior - anteromedial basal, posterior basal, lateral basal
