Lecture 2: Thoracic Cavity Flashcards
what is the superiority thoracic cavity border?
thoracic inlet
what is the inferior thoracic cavity border?
thoracic outlet
what is the anterior thoracic cavity border?
sternum complex
what is the posterior thoracic cavity border?
thoracic vertebrae and IVD’s
what bones make up the sternum complex?
Manubrium, Sternum proper and Xiphoid process
what is the main bony feature of the manubrium?
Jugular Notch
what pairs of costal bones are identified as “True” Costal bones
1-7
what pairs of costal bones are identified as “False” Costal bones?
8-10
what pairs of costal bones are identified as “False Floating” costal bones?
11-12
what are the 3 types of costal bone pairs?
True, False and False Floating
what are the 7 components of a typical costal bone?
head, neck, tubercle, angle, costal groove, cartilage joining end and body
what are the 6 components of a vertebrae?
body, spinous process, transverse processes, laminae, pedicles and facets
what are the 3 divisions of the thoracic cavity?
right pleural cavity, mediastinum and left pleural cavity
what is the pleura?
fluid membranes that surround the lungs
what are the 2 layers of pleura?
parietal and visceral
what are the 4 sections of the mediastinum?
superior, anterior-inferior, middle-inferior and posterior-inferior
what plane divides the mediastinum into superior and inferior sections?
transverse thoracic plane
what divides the inferior mediastinum into 3 sections?
pericardium around the heart
what 7 components are in the superior mediastinum?
ascending aorta, aortic arch, superior vena cava, trachea, oesophagus, thymus gland and pulmonary trunk + arteries
what component is in the inferior-anterior mediastinum?
thymus gland
what 5 components make up the inferior-middle mediastinum?
Parietal layers (fibrous outer/serous inner), visceral layer, pericardial fluid, heart and adipose tissue
what are the 4 components of the inferior-posterior mediastinum?
Descending thoracic aorta, pulmonary veins, primary bronchi and the oesophagus
what are the 7 major lines/planes of the thoracic cavity?
trans-thoracic, mid-sternal, parasternal, mid-clavicular, anterior axillary, mid-axillary and posterior axillary
what are the lobes of the left lung?
superior and inferior
what are the lobes of the right lung?
superior, inferior and middle
what divides the lobes of the lungs?
fissures (oblique on both and horizontal on right only)
what feature is at the bottom of the left lung that is ‘hook’ shaped?
lingula
what is the difference in cardiac impressions between the right and left lungs?
left is large CI, right is small CI
what lung has an aortic impression?
left lung
what are the 4 chambers of the heart?
left and right atrium, left and right ventricles
what type of oxygen is in the right side of the heart?
oxygen poor
what type of oxygen is in the left side of the heart?
oxygen rich blood
what is the series of blood flow from the right atria to the aorta?
R atria > R ventricle > pulm. trunk > R+L pulm. arteries > lungs > R+L sup. + inf. pulm. veins > L atria > L ventricle > aorta
what are the 8 inside features of the heart?
interventricular septum, tricuspid valve, pulmonary semilunar valve, bicuspid valve, chordae tendineae, papillary muscles, electrical conductive systems
