Final Exam Flashcards
3 major thoracic spaces
Mediastinum
Right Pulmonary Cavity
Left Pulmonary Cavity
Thoracic wall includes
thoracic cage, muscles between ribs, skin, subcutaneous tissue, muscles, fascia
Thoracic wall functions
protects vital organs, provide attachment for and support of upper limb and muscles, respiration, conduit for GI tract
Internal thoracic arteries
arise from the first part of the subclavian arteries, branches include Superior Epigastric and Musculophrenic
Anterior intercostal artery
arise from internal thoracic
supplies intercostal muscles
Posterior intercostal artery
arise from thoracic aorta
runs with intercostal nerve and vein
Subcostal Artery
same as intercostal but below 12th rib
Internal thoracic vein
empties into Brachiocephalic vein
Anterior intercostal vein
empties into the internal thoracic vein
Posterior intercostal vein
empties into Azygos vein
Subcostal vein
empties into Azygos vein
Intercostal nerve
ventral rami T1-T11
between internal and innermost intercostals
Subcostal nerve
ventral rami T12
between abdominal muscles
Superior Thoracic Aperture Boundaries
Posterior: T1 vertebrae
Lateral: 1st pair of ribs and costal cartilages
Anterior: Manubrium
Superior Thoracic Aperture Contents
Trachea. Esophagus, Nerves and Vessels that supple and drain the head, neck, and upper limb
Inferior Thoracic Aperture Boundaries
Posterior: T12 vertebrae
Lateral: Ribs 11 and 12, costal cartilages of ribs 7-10
Anterior: Xiphisternal joint
Inferior Thoracic Aperture Contents
Aorta, Inferior Vena Cava, Esophagus, Thoracic duct, Nerves
Visceral Pleura
closely covers the lung and adheres to all its surfaces
Parietal Pleura
lines the pulmonary cavity
Lines of Pleural Reflection
sternal line, costal line, vertebral line
Potential Pleural Spaces
costodiaphragmatic recess, costomediastinal recess
Pleural Cavity
potential spaces between layers of the pleura
contains serous pleural fluid
Lung Surfaces
costal, mediastinal, diaphragmatic
Lung Borders
anterior, posterior, inferior
Root and Hilum
Root contains vessels, nerves, bronchi
Hilum penetrated by root
Right Lung
3 lobes
oblique and horizontal fissures
Left Lung
2 lobes
oblique fissure
Upper Respiratory Tract
nose, nasal cavity, pharynx, larynx
Lower Respiratory Tract
trachea, bronchi, bronchopulmonary segments
Pulmonary Circulation
to oxygenate blood (pulmonary arteries and veins)
Bronchial Circulation
blood supply to the lungs (bronchial arteries from thoracic aorta) [systemic circulation]
Nerves of Parietal Pleura
sensation of touch and pain by intercostal and phrenic nerves
Nerves of Visceral Pleura and Lung
Pulmonary Plexus (ANS)
Parasympathetic (Vagus) nerves
bronchoconstriction
vasodilation
secretomotor
Sympathetic (sympathetic trunk) nerves
bronchodilation
vasoconstriction
inhibit secretomotor
Relaxed breathing is a (blank) process
PASSIVE process
Forced berating is a (blank) process
ACTIVE process
Movements of the thoracic wall
to increase thoracic cavity volume
Vertical Dimension
diaphragm depression
Lateral Dimension
ribs elevate (bucket handle movement)
Anteroposterior Dimension
sternum moves anteriorly (pump handle movement)
Principle muscle of respiration
diaphragm