Respiratory Disorders Flashcards
Upper Respiratory Tract
Nasal Passages
Paranasal sinus
Respiratory muscosa–cells secrete mucous and have cilla
Sneeze or cough stimulated by excessive mucus or particles
Nasopharynx to larynx to trachea
Upper respiratory tract has a resident group of Flora
Lungs are sterile
Pharynx common to food and air–just before separation of trachea and esophagus (epiglottis closes opening to larynx)
URT Respiratory mucosa–cells secrete____ and have _____
Mucous, Cilla
URT what is a sneeze or cough stimulated by?
excessive mucus or particles
URT Nasopharynx to
larynx to trachea
URT has a resident group of
Flora
Lungs are
sterile
Pharynx common to
food and air
Just before separation of trachea and esophagus
epiglottis closes opening to larynx
Lower Respiratory Tract
Air from the trachea proceeds to the right and left BRONCHUS
The BRONCHUS branches into smaller BRONCHII
These BRONCHII branch into BRONCHIOLES
Bronchioles have smooth muscle to contract or relax to control size of opening
Air from the trachea proceeds to
right and left bronchus
The bronchus branch into
smaller bronchii
The bronchii branch into
bronchioles
Bronchioles have smooth muscle to
contract or relax to control size of opening
Bronchodilation occurs when
SNS stimulation relaxes the smooth muscle
Air into
ALVEOLI (air sacs)–gas DIFFUSION occurs
Alveoli has
thin walls lined with capillaries
Right lung has_____ lobes
3
Left lung has _____lobes
2
Each lung covered with
PLEURAL membrane
Visceral pleura attached to
lung
Parietal pleura attached to
inside of thoracic cavity
Ventilation
Air pressure from high to low pressure
Thoracic cavity increased in length (superior/inferior-piston) by diaphargm
Thoracic cavity increased by external intercostals (Bucket Handle) in lateral direction
Thoracic cavity increased by external intercostals (pump in anterior-posterior direction
Therefore larger space inside, less pressure, and air ruches into lungs
Diaphragm and external intercostals relax
Along with natural elastic recoil allowing thorax to DECREASE in size.
Pressure then increases inside and air is forced out.
Forced inspiration or expiration requires more muscle energy
Air pressure from ____ pressure to _____ pressure
High, low