Thoracic and Lung (complete) Flashcards
Functions of the Respiratory System
- supplies oxygen to the body
- eliminates carbon dioxide
- maintain homeostasis
- maintain heat exchange
- alveoli: exchange of oxygen and carbon dioxide
Oxygenation depends on:
- airway system to transport air to and from lungs
- alveolar system to exchange oxygen and carbon dioxide
- cardiovascular system and blood supply to carry nutrients and wastes to and from body cells
Anatomy of the upper respiratory tract
nose
oropharynx
Anatomy of the lower respiratory tract
trachea
bronchi: left and right
bronchioles
alveoli
Physiology of the lungs
control blood pH
what is the diaphragm
a dome-shaped muscle that separates pleural and abdominal cavities
Anterior chest wall landmarks (I can’t input a photo so just a list)
suprasternal notch
sternum:
- manubrium
- body
- xiphoid process
sternal angle (angle of Louis)
costal angle
What are the thoracic landmarks?
thoracic cage:
- sternum
- ribs (12 pairs)
thoracic vertebrae - 12
diaphragm
What are the 12 pairs of ribs
- ribs 1-7: attach to sternum - costal cartilages
- ribs 8, 9, and 10: attach costal cartilage above
- ribs 11 and 12: floating
costochondral junctions (joint): connect the ribs to the costal cartilage
What do the costochondral junctions (joints) do?
connect the ribs to the costal cartilage
Chest circumference
midsternal line
midclavicular line
anterior axillary line
midaxillary line
posterior axillary line
scapular line
vertebral line
Where is the midsternal line
vertical along the sternum
Where is the midclavicular line
vertical from the midpoint of the clavicle
Where is the anterior axillary line
vertical from the anterior axillary fold
Where is the midaxillary line
vertical from the apex of the axilla
Where is the posterior axillary line
vertical from the posterior axillary fold
Where is the scapular line
from the inferior angle of the scapula
Where is the vertebral line
overlie the thoracic spinous processes
Lungs: lobes and fissures anteriorly
apex: approximately 2-4cm above the inner third of the clavicle
lower border of the lung crosses the 6th rib at the midclavicular line and the 8th rib at the midaxillary line
Lungs: lobe and fissures posteriorly
lower border of the lung lies at the level of the T10 spinous process
Lungs: lobes and fissures lateral
right and left side of the lungs located under the axillae
Lungs lobes and fissures on inspiration
lungs and diaphragm descends
Lungs: right lobes and fissures
Right upper lobe (RUL), right middle lobe (RML), and right lower lobe (RLL)
oblique (major) fissure
horizontal (minor) fissure
Where does the oblique (major) fissure run?
From the T3 spinous process obliquely down and around the chest to the 6th rib at the midclavicular line
Where does the horizontal (minor) fissure run?
anteriorly; fissure runs close to the 4th rib and meets the oblique fissure in the midaxillary line near the 5th rib
Lungs: left lobes and fissure
left upper lobe (LUL) and left lower lobe (LLL)
oblique fissure