PPT 01 and 02 (Respiratory) Flashcards
lined primarily by ciliated epithelium and goblet cells
conducting system
consists of alveoli that are lined by epithelial type I (membranous) and type II pneumonocytes
exchange system
a nasal flora that may cause shipping fever
Mannheimia haemolytica
a nasal flora that is responsible for atrophic rhinitis
bordetella bronchiseptica
nasal flora are not present in these regions
distal portion of respiratory system (bronchi, bronchioles, alveoli)
non specific defense mechanisms
air turbulences, mucus trapping, mucociliary clearance, phagocytosis, coughing, sneezing
defense mechanisms of conducting system
air turbulences, centrifugal forces, particle impaction, mucus entrapment, mucociliary clearance, IgA
first line of defense created by nasal turbinates
air turbulence and centrifugal forces
particle size that can enter the nasal cavity
greater than 10 micometer
particle size that can enter alveoli
less than 2 micrometer
present in bronchial bifurcations that help produce immune cells
bronchial-associated lymphoid tissue
main effector cell in the inflammatory process of the lung through production of cytokines
pulmonary alveolar macrophage
medical term that describes a nose bleed
epistaxis
coughing up blood or presence of blood in mouth, saliva or sputum
hemoptysis
frequent indicator of nasal trauma or nasal neoplasia
epistaxis
In cattle, epistaxis-hemoptysis is often associated with?
ruptured pulmonary vessel (aneurysm)
In horses, epistaxis is also seen in?
exercise induces pulmonary hemorrhage and ethmoid hematoma
an important condition in older horses clinically characterized by chronic, progressive and generally unilateral nasal bleeding
ethmoid hematoma
Nasal congestion or nasal hemorrhage is commonly seen following exposure to irritant gases such as
ammonia, hydrogen sulfide, nitrogen dioxide
steps of cell injury, degeneration and repair
Cell injury, degeneration, detachment, exfoliation, inflammation, mitosis, repair
injury and repair of nasal mucosa takes how many days
14 days
lungs can be exposed to bacterial aerosols but within how many hours will all bacteria be destroyed and removed from the lung
24 hours
appears as a single, pedunculated tumor-like, soft mass arising from ethmoid conchae
ethmoid hematoma
factors that reduce the pulmonary defense mechanism and predispose the lung ot secondary bacterial pneumonia
virus, stress, dehydration, lung edema, uremia, ammonia, and immunodeficiency
Nasal congestion and hyperemia are frequently seen in?
bloat, toxemia, sepsis, rhinitis
nasal hemorrhages are common in?
domestic animals
Common causes of epistaxis in horses
ethmoid hematoma, exercise induced pulmonary hemorrhage
In all species nasal tumors and rhinitis are also causes of
epistaxis
implications of purulent rhinitis
pyogenic organisms
mucus secretions due to goblet cell hyperplasis and indicates chronic irriration to moderate injury
catarrhal exudate
rhinitis which is due to severe injury to mucosa
fibrinous
rhinitis with accumulation of macrophages, lymphocytes, plasma cells and CT
granulomatous
an important equine disease that may occur as an outbreak with high morbidity
strangles