Please enable JavaScript.
Coggle requires JavaScript to display documents.
Respiratory (Functional anatomy of ventilation system (Nares (nostrils)…
Respiratory
Functional anatomy of ventilation system
Bit gas moves in, no exchange
Oral cavity, trachea, bronchus, bronchiole
Nares (nostrils)
Rigid - pigs
Horses - distensible (as obligate nasal breathers)
Hairs - cleans air
Mucus - traps foreign particles
Warms air
Humidified
Turbinates
do all below:
Not all nasal cavities created equal (e.g. Bracycephalic)
Pharynx
Epiglottis (cartilage)
Highly mobile structure
Thyroid cartilage
Arytenoid cartilage
Cricoid cartilage
Note: Laryngeal paralysis
Trachea
Tracheal rings
Tracheal muscle (external in dogs, internal in cattle)
Bronchus
Bifercates (one primary to each lung)
in ruminants and pigs an additional bronchus to cranial aspect of lung
Mucus, epithelial cells with goblet cells
Secondary bronchi go to each lobe
Tertiary bronchi go to lobule
Primary to each lung
Airways surrounded by CT that communes with visceral pleura. (If outside of lung gets bigger airways pulled open)
Bronchioles
No sub-mucosal glands or cartilage in bronchioles (dif. between bronchioles and bronchus). Bronchioles also cannot be seen with naked eye
Alveolus
Type 2 (alveolarcyte) produce surfactant
Bronchovascular bundle
Bundle of bronchus, artery and vein. In lateral vein, vein = ventral, artery dorsal and bronchus central
Anatomy of thoracic cage and pleura
Diaphragm, convex from front.
Costal portion
Crural portion
Flattens when contracts
Pleura
Diaphragmatic, costal and mediastinal = parietal
Reflected on surface of lung = visceral
Film of fluid and negative pressure
Pulmonary lobe
Lung acts as sieve. So things get stuck so easy for tumour to form
Anastamoses
Functional anatomy of respiratory portion of lung
Respiration is where gas exchange occurs
Pulmonary lobule
Species based gross anatomical features of lungs