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Respiratory SystemWQEWEQWEQWEQ - Coggle Diagram
Respiratory SystemWQEWEQWEQWEQ
Major parts
Lower respiratory track
Muscles for respiration1231231231231
Diaphragm
Intercostal muscles : :
Airway upper respiratory track
mouth
Pharynx
Nose
Larynx
Trachea
Bronchi
Bronchioles
Breathing Mechanics
Muscle of respiration
Expiration - Passive
Inspiration - active
Diaphragm
External Intercostals
Accessory
Scalenes
Serratus anterior
SCM
Internal Intercostals
Abdominal muscles
Nose and Nasal Cavity
Nasal Area
Vestibule : Nasal cavity superior to the nares
Respiratory mucosa
Olfactory mucosa
Vibrissae: Hairs that filter coarse particle from inspired air
Oral Cavity
Mouth
Pharynx
Larynx(Voice BOX)
Trachea(windpipe)
Functions of the nasal mucosa and conchae
During inhalation the conchae and nasal mucosa
Filters, heat, and moisten air
During exhalation these structures
Reclaim heat and moisture
minimize heat and moisture loss
Conducting zone : Bronchi
Carina of the last tracheal cartilage marks the end of the trachea and the beginning of the bronchi
Air reaching the bronch:
Saturated with water vapor
warm and cleansed of impurities
Bronchi subdivide into secondary bronchi, each supplying a lobe of the lungs
Brachial tree
Tissue walls of bronchi mimic that of the trachea
As conducting tubes become smaller, structural changes occur
Epithelium types change
Amount of smoot muscle increases
Cartilage support strucures change
Bronchioles
Have a complete layer of circular smooth muscle
Lack cartilage support and mucus producing cells
Consist of cuboidal epithelium
Respiratory Zone
Respiratory Membrane
Alveolar walls:
Permit gas exchange by simple diffusion
Secrete angiotensin converting enzyme(ACE)
Type 2 cells secrete surfactant
Are a single layer of type 1 epithelial cells
This air-blood barrier is composed of
Their fused basal laminas
Alveolar and capillary walls
