Respiratory system Flashcards
respiratory system function
exchange air
Organs of respiratory system
Nasal cavity, pharynx, larynx, trachea, bronchial tubes, lungs
Ventilation
Flow of air between outside environment and lungs. Includes inhalation and exhalation
External respiration
Exchange of oxygen and carbon dioxide in the lungs. Oxygen leaves air sacs and enters bloodstream and carbon dioxide leaves the blood stream and enters air sacs
Internal respiration
Oxygen carbon dioxide exchange at a cellular level. Oxygen leave the bloodstream and is delivered to tissue and use for metabolism. Carbon dioxide leaves tissues and into his bloodstream as a waste product of metabolism
Nasal cavity
Air enters through nares. Covered in mucous membrane, capillaries warm and humidify air
Paranasal sinuses
Located within facial bones, echo chamber for sound production
Pharynx
Commonly called the throat, Divided into three sections; nasopharynx, oropharnyx, and larnygopharnyx
Tonsils
Lymph attic tissue that removes pathogens in air and food. You have three pairs, adenoids, palatine, and lingual
Eustachian or auditory tube
Opening found in nasopharnyx. Opens with each swallow to equalize air pressure between middle ear and outside atmosphere
Larynx
Commonly called voicebox; muscular tube between pharynx and trachea. Walls of Larnyx are composed of Cartilage plates held in place by ligaments and muscles
Vocal cords
Folds of membranous tissue that vibrates to produce sound as air passes through opening between folds called the glottis
Epiglottis
The flap of Cartilage above the glottis that covers the Larynx and trachea during swallowing
Trachea
Commonly called the windpipe, carries air from larynx to main bronchi, 4 inches long. Composed of smooth muscle and Cartilage and assists in cleaning, warming and moisturizing air is it travels to the lungs
Bronchial tubes
Enters into the lungs, branches to form secondary and tertiary bronchi
Alveoli
Bronchi continues to branch to form their own bronchioles which terminate in alveoli
Pulmonary capillaries
In case each alveoli. Alveoli wall and capillary wall form respiration membrane
Lungs
Protected externally by ribs and internally by a double membrane called pleura. Right lung has three lobes left lung has two lobes
Parietal pleura
Outer membrane that lines wall of chest cavity
visceral pleura
inner membrane that adheres to surface of lungs
Pleura
folded to form sac around each lung called pleural cavity. Serous fluid between 2 pleural layers reduces friction when they rub together during ventilation
apex
pointed superior portion of lung
base
broad lower area of lung
hilum
entry and exit points such as bronchi, blood vessels, and nerves in the lungs
tidal volume
volume of air moving in and out in a single relaxed breath
inspiratory reserve volume
volume of air that can be forcefully inhaled after normal inhale
expiratory reserve volume
volume of air that can be forcefully exhaled after normal exhale
residual volume
volume of air remaining in lungs after forced exhale
inspiratory capacity
tidal+inspiratory
functional residual capacity
expiratory reserve volume+ residual
vital capacity
inspiratory reserve+tidal+expiratory
total lung capacity
inspiratory reserve+ tidal + expiratory reserve+ residual
diaphragm
muscle that separates abdomen from thoracic cavity. contracts and causes decrease in pressure in chest cavity and air enters lungs to equalize pressure
intercostal muscles
located between ribs, raises rib cage to enlarge cavity, increases neg. pressure, and assists with forceful inhalation
respiratory rate
how many times we breathe in a minute. when co2 level is high, we breathe more rapidly
adult respiratory rate
12-20
infant respiratory rate
30-60
internal medicine
branch of medicine treating conditions of internal organs
otorhinolaryngology
branch of medicine that treats conditions of ear, nose, and throat
pulmonology
branch of medicine involved in treatment of respiratory system
respiratory therapist
health specialty that assists patients with respiratory and cardiopulmonary disorders by conducting tests, giving breathing treatments, managing ventilator, and monitoring 02 levels
thoracic surgery
branch of medicine involving conditions of respiratory system by surgical means
anosmia
lack of sense of smell
anoxia
unable to obtain oxygen from inhaled air
aphonia
unable to produce sound
asphyxia
lack of oxygen; can lead to unconsciousness and death
aspiration
withdrawing fluid using suction (such as phlegm), or inhaling food or liquid into trachea
bradypnea
breathing too slowly; low respiratory rate
bronchiectasis
having dialated bronchi
bronchospasm
involuntary contraction of smooth muscle in bronchial walls
cheyne-stokes respiration
abnormal breathing pattern w/ long periods of apnea followed by deep and rapid breathing
clubbing
abnormal widening and thickening of fingers due to chronic o2 deficiency
crackles
abnormal crackling during inspiration; indicates fluid in lungs; also called rales
cyanosis
blue skin caused by low oxygen in blood
dysphonia
difficulty producing sound
dyspnea
difficult/ labored breathing
epistaxis
nosebleed
eupnea
normal breathing rate
hemoptysis
cough up blood or blood-stained sputum
hemothorax
blood in chest cavity
hypercapnia
excessive co2 in body
hyperpnea
deep breaths
hyperventilation
breathing too fast and deep
hypocapnia
insufficient co2 in blood
hypopnea
shallow breaths
hypoventilation
breathing too slow and shallow