Pulmonary Anatomy Flashcards
laryngopharynx
-opening of esophagus
nasopharynx
-above soft palate
visceral pleura
- covers outer surface of lungs
- no sensory innervation
Lung Segments
Upper Lobe of L/R Lungs
- Anterior
- Apical
- Posterior
Lobes of Lungs
- Right: upper, middle, lower
- Left: upper, lingula, lower
Fissures
- Right Lung: horizontal fissure, oblique fissure
- Left Lung: oblique fissure
Pectus Excavatum
- funnel chest
- depression of sternum
- (can measure by pouring water into it)
Pectus Carinatum
- pigeion breast
- prominent forward projection of sternum
Barrel chest
- side to side diameter almost equal to front to back diameter
- classic of emphysema
Oropharynx
-base of tongue
Most aspirations are into the ____ lung
- Right
- primary bronchus on right is shorter, straighter and wider than left
Respiratory bronchioles
-beginning of gas exchange
17-19th generation
Alveolar Sac
- major part of gas exchange
- has surfactant
(23rd generation)
Terminal Bronchioles
-end of conducting airways
12-16th generation
Alveolar ducts
-gas exchange
19-22nd generation
Inhalation associated with:
trunk extension
Exhalation associated with:
trunk flexion
Surfactant
-keeps alveoli open
Pleura
- membranous serous sac around lungs
- visceral and parietal layers
- separated by thin serous fluid
increased trunk flexion leads to
-decreased inhalation=closed alveoli–>decreased air movement–>increased pneumonia risk
Sternocleidomastoid
- CN XI
- elevate sternum during forced inspiration
Parietal Pleura
- covers inner surface of chest wall and part of diaphragm and mediastinum
- subdivided based on area covered
External Intercostals
-Ventral rami of T1-T12
Internal Intercostals
-Ventral rami of T1-T12
Serratus Anterior
- Long thoracic nerve
- C5-7, C8
7 Accessory Breathing Mm
- SCM
- Scalenes
- Serratus Ant
- Pec major
- Pec minor
- trapezius
- erector spinae
Scalenes
- elevate ribs
- C3-C5
Pectoralis Minor
- Med pectoral N
- Elevate ribs with deep inspiration
-C6-8
Lung Segments
Lower Lobe of Left Lung
- Anterior
- Superior
- Lateral
- Posterior
Lung Segments
Lower Lobe of Right Lung
- Basal
- Superior
- Lateral
- Posterior
- Medial
Lung Sements
Middle Lobe of Right Lung
- Medial
- Lateral
Trapezius
- CN XI
- ventral rami of C2-4
- Stabilize scap to let serratus ant and pec minor elevate ribs
Pectoralis Major
- Med and Lat pectoral Nn
- Draws ribs toward arms to increase volume
-C5-C8
Erector Spinae
-Deep inspiration, extends spine to elevate ribs
Dorsal rami of T1-S3
Upper Airway
- Nose
- Pharynx
- Larynx
Lower Airway
- Trachea
- Bronchi
- Bronchioles
- Terminal Bronchioles
- Respiratory Bronchioles
- Alveolar Ducts
- Alveolar Sacs
Diaphragm
- Phrenic Nerve
- C3-5
Lung volume in supine
decreased due to shift of abdominal contents
Referred Pain:
Mediastinal and Central Diaphragmatic Pleura
-pn in lower neck and shoulder
4 Functions of Lungs
- Exchange O2 and CO2
- Help maintain acid-base balance
- Contribute to temperature homeostasis
- Filter & Metabolize Toxic Substances
Rererred Pain:
Costal and Peripheral Pleura
-pain in thoracic and abdominal areas
subdivisions of parietal pleurs
- costovertebral
- diaphragmatic
- cervical
- mediastinal
Nn of Pleura
- Intercostal Nn=costal and peripheral diaphragmatic pleura
- Phrenic N: central diaphragmatic & mediastinal pleura
Larynx
- cartilage
- keep foods, liquids and foreign objects from airway