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Flow of air through respiratory tract
pharynx -> larynx -> trachea
A pleura contains (PPV)
pareital layer, a pleural cavity filled with serous fluid, visceral pleura
Expiration
Muscles relax, diaphragm domes, intercostal muscles relax, increase in pressure causes air to whoosh out
Emphysema
alveoli permanently impaired (ex smoking)
Tuberculosis
bacterial infection that scars lungs.
Function of Pharynx:
Have resonating voice chambers such as: Maxillary sinus frontal sinus, sphenoid sinus, ethnoid sinus
Ventilation Definition
the process of bringing fresh air into the alveoli and removing stale air
Systemic Circuit
Flow of oxygen-rich blood to the heart
Bronchitis
Inflammation of bronchi
Botulism
infection by bacterial toxin
Respiratory epithelium
1. Pseuodostratified ciliated columnar epithelium
2. goblet cells
External Respiration
gas exchange between air and blood in lungs
Pulmonary Circuit
Floow of poorly oxygenated blood through the heart
Cystic Fibrosis
thick mucous impedes airflow(genetic)
Cancer
uncontrolled growth of abnormal cells
Respiratory Tract Defense
Cillia, mucous, hair, phagocytes,
Internal Respiration
gas exchange between blood and tissues
The Medulla Oblongata does what?
Helps with breathing pattern, stimulates intercostal muscles and the diaphragm. It also helps things such as sneezing/vomiting.
Cold and Flu
caused by virus
Mesothelioma
Cancer that lines lungs, hearts, and abdomen
Pleura
A serous membrane that prevents friction
Inspiration
Diaphram contracts, muscle pulls down, intercostal muscles contract, expanding chest and pulling air in.
Asthma
Smasmodic contraction of the bronchi
Pneumonia
infection of lungs(bacteria/viruses)
COngestive heart failiure
heart has a less productive pump