THE THORAX Flashcards
CHECK ON LEARNING
this is the serosa that keeps the lungs stuck to the wall of the thoracic cage so that the lungs will expand also?
pleura
layer against the chest wall
parietal pleura
the layer against the lungs
visceral pleura
between the two pleura of the lungs, is a potential space lined with a thin layer of fluid?
inter pleural space
double layer of serosa that connects the mediastinum to a pleural cavity. It is similar in function and structure to the many ligaments we say in the abdomen
pulmonary ligament
when the potential space between the pleural layers is filled with air
collapsed lung
air in the pleural space
pneumothorax
inflammation of the pleura that can also result in a collapsed lung
pleurisy
potential space in which fluid can pool in the bottom of the thoracic chamber.
diaphragmatic recess
parietal pleura against the ribs?
costal pleura
parietal pleura against the surface of diaphragm
diaphragmatic pleura
parietal pleura against the medial part of the parietal pleural that is adjacent to the mass of tissue and organs that separate the pleural sacs, known as the mediastinum
mediastinal pleura
parietal pleura against the apex of lung
cupula pleura
these structures are between the mediastinal pleura and mediastinum?
pericardiacophrenic artery, vein and phrenic nerve
innervation of the phrenic nerve?
C3,C4,C5
what is the respiratory system divided into?
conducting airway and respiratory airway
what comprises the conducting airway?
nose pharynx larynx trachea primary bronchi -secondary bronchi --tertiary bronchi ---bronchioles ----primary bronchioles ----terminal bronchioles
what is the link between the conducting airway and the respiratory airway?
terminal bronchioles
what comprises the respiratory airway?
respiratory bronchioles
alveolar ducts
alveoli
these carry dexoygenated blood from the heart to the lungs
these carry oxygenated blood from the lungs to the heart
pulmonary arteries
pulmonary veins
what are the bones that comprise the sternum?
manubrium
body
xiphoid
what structures lie deep to the sternal angle?
what rib lies here? at the level of what vertebrae
aorta branches
SVC
trachea bifurcation
2nd rib, level of T4-T5
if broken, than you have a functionally disarticulated upper extremity?
clavicle
for ribs, the anterior cartilaginous termination is made of what type of cartilage?
fibrocartilage-costal cartilage
this part of the rib uses its demifacets to articulate with the bodies of the two thoracic vertebrae?
head
this part of the rib is between the head and tubercle?
neck
this part of the rib has an articular surface which articulates with the transverse process of the thoracic vertebrae?
tubercle
part of the body of the rib is where the rib turns anterolaterally
costal angle
part of the body of the rib that protects the intercostal nerve and vessels? what are these vessels?
intercostal vein, artery, nerve
intercostal vein drains where?
azygous vein
intercostal artery supplies?
thoracic aorta
what is the intercostal nerve a branch off of?
thoracic spinal cord
glands of the mammary glands?
apocrine sweat glands
sebaceous glands found in the skin of the areola that produce sebum protecting the nipple
part of female breast?
pigmented skin surround the nipple
areola
part of female breast?
exit of the lactiferous ducts
mammary glands
part of female breast?
modified sweat gland within the superficial fascia?
mammary glands
part of female breast?
transport milk from the glands to the nipple
lactiferous ducts
part of female breast?
give support to the breast by anchoring it to the fascia that overlies the pectoral muscles
suspensory ligaments
part of female breast?
bordered by the clavicle, pectoralis major, deltoid
what structure runs here
deltopectoral triangle
cephalic vein
pulls ribs up and out in inspiration?
external intercostal muscles
pulls ribs upward and inward to compress the thoracic cavity assisting in expiration?
internal intercostal muscles
what comprises the innermost intercostal muscles?
internal thoracis (transversus thoracis) subcostal muscles
the diaphragm has openings in it for a few structures to pass?
directly anterior to the vertebral column
anterior to the aorta, carries the vagus nerve with it
anterior and to the right of the esophagus
aorta
esophagus
inferior vena cava
what imaginary line divides the mediastinum?
from the sternal angle to the body of T4
what are the contents of the superior mediastinum?
trachea aortic arch and branches superior vena cava brachiocephalic vein thymus
what is the inferior mediastinum divided into? name the contents?
anterior
middle
posterior
anterior:
internal thoracic arteries
internal thoracic veins
middle: heart aorta superior vena cava pulmonary trunk
posterior: thoracic aorta azygous system of veins trachea esophagus sympathetic trunk splanchnic nerves
potential space between fascia that surround the deep muscles of the vertebral column. Infection can occur here like in the oral cavity or pharynx and can spread all the way down to the posterior mediastinum
retropharyngeal space (danger space)
this is the double walled sac that holds the heart?
open or closed system?
pericardial sac
closed
outer fibrous connective tissue layer?
fibrous pericardium
the inner serous layer of the pericardial sac?
what are the layers this?
this refers to the visceral layer of the serous pericardium which lies directly on the surface of the heart?
serous pericardium
visceral and parietal layers
epicardium
posterior to the arch of the aorta and pulmonary trunk and anterior to the back wall of the pericardial sac. This potential space has some clinical significance in heart surgeries?
transverse sinus
bordered by the visceral serous pericardium anteriorly, the parietal serous pericardium posteriorly, and the right and left pulmonary veins on the sides and a pericardial connection superiorly
oblique sinus
a specialized trabecular that connects the central wall of the heart to the outer wall of the right ventricle, not present in the left ventricle?
septomarginal trabeculae or moderator band
what is the intrinsic system of the heart made of?
SA Bachman fibers Internodal fibers AV node AV Bundle of His Left and Right Ventricular Bundle Branches Purkinje Fibers
what is the role of the extrinsic innervation of the heart? components?
slows the heart down
parasympathetic (vagus) and sympathetic (presynaptic fibers from T-1 to T-5) chronotropic, dromotropic, ionotropic
Great Cardiac Vein runs with?
Anterior inter ventricular artery
Middle Cardiac Vein runs with?
posterior inter ventricular artery
Small Cardiac Vein runs with?
marginal artery
umbilical vein becomes?
ligamentum teres
ductus venosus becomes?
ligamentum venosum
foramen ovale becomes?
fossa ovalis
ductus arteriosus becomes?
ligamentum arteriosum
umbilical arteries becomes?
medial umbilical ligaments or folds
brings blood in form the placenta towards the liver?
umbilical vein
allows blood that has just come into the fetus to bypass the liver?
ductus venosus
a valve that allows blood to flow from the right atrium to the left atrium?
foramen ovale
shunts blood from the pulmonary trunk to the aortic arch in order to bypass the lungs?
ductus arteriosus
returns blood to the placenta from the internal iliac arteries
umbilical arteries
what does the thoracic aorta give rise too?
intercostal arteries and superior phrenic arteries
this is the return system for all the lymph except the right upper quadrant of the body.
thoracic duct
thoracic duct receives lymph here and drains into the junction of?
cisterna chyle
left internal jugular
left subclavian
what comprises the azygous venous system?
azygous vein proper
hemiazygous vein
accessory hemiazygous vein (T3-T4 up to T1)
chains of ganglia that are seen in the abdomen that run on either side of the vertebral column?
thoracic sympathetic trunks
pathways the presynaptic sympathetic fibers take in getting from the ventral rami to the sympathetic trunks?
white rami communicates
post synaptic sympathetic fibers get back on to ventral rami of spinal nerves here?
gray rami communicantes
these supply the sympathetic innervation to the viscera?
splanchnic nerves
level of greater splanchnic nerves?
T-5 to T-9
level of lesser splanchnic nerves?
T10 to T11
level of least splanchnic nerves?
T-12