RESPIRATORY SYSTEM Flashcards
2 functions of the respiratory system
ventilation & diffusion
2 divisions of the respiratory system
upper and lower respiratory tract
what comprises the upper respiratory tract?
nose, pharynx, sinuses, mouth, larynx
what comprises the lower respiratory tract
trachea, bronchi, lungs, alveoli
- Serves as the opening for the pulling of air
mouth
- Tube that delivers air from the mouth going to the trachea
pharynx
3 types of pharynx
nasopharynx, oropharynx, laryngopharynx
among the 3 types of pharynx which is most superior \?
nasopharynx
pharynx that is located to posteriorly to the mouth
oropharynx
where is the laryngopharynx located?
inferior to oropharynx
- Located inferior to the pharynx
larynx
- a hollow area between the facial bone that help regulate the temperature and humidity of the air
sinuses
what are the different types of sinuses
frontal, maxillary, ethmoid, spenoid
which sinus is the most superior?
frontal
which sinuses are the biggest & smallest?
b - maxillary, s - ethmoid
which sinus is the most posterior?
spenoid
- passage that connects the throat and the lungs
trachea
where is the trachea located?
behind the esophagus
what are alveoli?
tiny-air sacs that look like grapes
- contains almost 5,000,000 alveolus
lungs
what are the lobes of the lungs?
r - superior, middle, inferior
l - superior & inferior
what do you call the division of lungs?
fissures
- Contains all thoracic organs except lungs
mediastinum
which organ occupies most of the mediastinum?
heart
what are the other organs located in the mediastinum?
thyroid, thymus glands, nervous and lymphatic tissues
parts of mediastinum
- Anterior mediastinal masses
- Middle mediastinal masses
- Posterior mediastinal masses
- In infants, _______ appears WIDE because the _____ is normally large in a healthy infant
thymus
what projection/s fills the anterior portion of the mediastinum?
PA & LAT
- PA & LAT fills the anterior portion of the mediastinum w/c refers to as _____
SAIL SIGN
another name for pneumomediastinum
spinnaker sign or angel wing sign
another name for spinnaker sign or angel wing sign
pneumomediastinum
a kind of condition wherein there’s there’s disruption in the esophagus/airway and air is trapped in the mediastinum
- MEDIASTINAL EMPHYSEMA or pneumomediastinum
when pneumomediastinum is extensive, air may pass from the mediastinum into the subcutaneous tissue of the chest/neck
subcutaneous emphysema
how can a diagnosis of subcutaneous emphysema be made?
feeling air bubbles in skin of the chest/neck
what kind of imaging is commonly used especially in pediatrics
CR & DR
harder than normal to penetrate (any condition that adds fluid/tissue to the chest)
additive pathologies
easier than normal to penetrate (any condition that increases the aeration of the chest/ decreases the parenchymal tissue of chest)
SUBTRACTIVE PATHOLOGIES
what are the standard techniques for the respiratory system
PA & LAT 72 in SID
what is pectus excavatum
depressed chest that can be due to a congenital anomaly
what is pectus cranium
– there’s an abnormal outward of the chest.
- Allows high-resolution, thin-slice thicknesses ranging from 1-1.5 cm
CT SCAN
- Captures information regarding metabolic activity
PET SCAN
what is the primary agent used in lungs during a pet scan
FLUORODEOXYGLUCOSE (FDG)
- Injection of radionuclide into the venous system for a perfusion causes it to become trapped in the pulmonary circulation
NUCLEAR MEDICINE
what radioactive gas is inhaled by the patient during nuclear medicine?
xenon
- Large plastic tube inserted through the px’s nose/mouth into the trachea.
endotracheal tube
- large plastic tube inserted through the chest wall between the ribs
chest tube
- A catheter that provides an alternative injection site to compensate for loss of peripheral infusion site
central venous pressure
- Inserted via the subclavian vein but other injection sites include antecubital vein, jugular vein, femoral vein
pulmonary artery catheter
what kind of catheter is used in pulmonary artery?
swan-ganz
injection sites of pulmonary artery catheter
antecubital vein, jugular vein, femoral vein
- Allow multiple tapping for injection of various agents, typically chemotherapeutics
port-a-cath
balloon at the distal end of the catheter allows inflation and deflation by a pump that is synchronized to the px’s cardiac cycle to provide mechanical support of the left ventricle
intra-aortic balloon pump
how many can the balloon at the intra-aortic balloon pump can hold
40 ml
- Used to describe lack of respiratory function/ lack of oxygen & CO2 exchange.
respiratory failure
what are the 2 instances respiratory failure can occur?
- W/in the lungs (intrapulmonary gas exchange)
- Result of impaired breathing (inability to move air into and out of the lungs)
what are the signs of respiratory failure
exhibit tachypnea, tachycardia/ gasping breathing patterns and paradoxic abdominal motion
- Low oxygen levels w/in arterial blood & results from a failure of gas exchange function
hypoxemia
- If hypoxemia is acute, it may cause_____
cardiac arrhythmias & alteration of consciousness ranging from confusion to coma
- Failure of ventilation resulting in the inability to move air into & out of the lungs, with consequent increased blood CO2 content
hypercapnia
- Results from genetic defect transmitted as an autosomal recessive gene that affects the function of exocrine glands
cystic fibrosis
- Dehydration of mucous layer leads to an accumulation of viscous secretions that obstruct the airway
cystic fibrosis
another name for hyaline membrane disease
respiratory Distress syndrome
- Affects infants due to incomplete maturation of the Type II alveolar cells w/in the surfactant-producing system causing unstable alveoli
hyaline membrane disease
- Results in alveolar collapse w/ widespread atelectasis (complete/partial collapse of entire lobe/lung)
hyaline membrane disease
- Most frequent type of lung infection
pneumonia
main causes of pneumonia
bacteria, viruses & mycoplasms
bacteria that causes pneumonia
- Streptococcus Pneumoniae (Pneumococcus)
- Staphylococcus Aureus
- Heamophiuls
- H. influenza
- Legionelle Pneumophilia
kinds of pneumonia
lobar, segmental, bronchopneumonia, interstitial pneumonia
best modality to diagnose pneumonia
chest radiograph
symptoms of pneumonia
COUGH, FEVER, SPUTUM PRODUCTION
- Permanent, abnormal dilation of one/ more large bronchi as a result of the destruction of the elastic & muscular components of the bronchial wall
bronchiectasis
what lines could be seen on a bronchiectasis radiograph?
tram lines
- Caused by inhalation of MYCOBACTERIUM TUBERCULOSIS
pulmonary tuberculosis
primary means of diagnosis of pulmonary tuberculosis?
SPUTUM TEST/LAB CULTURE
aside from SPUTUM TEST/LAB CULTURE, what other test can be used to diagnose pulmonary tuberculosis
mantoux test - skin test
- Group of disorders that cause chronic airway obstructions
COPD
- lung’s alveoli become distended, usually from loss of elasticity or interference w/ expiration
emphysema
- chronic inflammation of the bronchial system resulting in airway obstruction & bronchial hyper responsiveness
asthma
- infection of the main airways of the lungs (bronchi), causing them to become irritated & inflamed.
bronchitis
- result in pulmonary fibrosis from inhalation of foreign inorganic dust, most commonly from a particular work environment
pneumoconioses
types of pneumoconioses
silicosis, anthracosis, abestosis
- oldest known pneumoconiosis, results from inhaling silica (quartz) dust and is common among miners, grinders & sand-blasters
silicosis
- inhalation of coal dust over an extended period of about 20 yrs.
anthracosis
another term for anthracosis
black lung disease
what is asbestosis
- Inhalation of asbestos dust (found in building materials and insulation), w/c causes chronic injury to lungs
- Localized area of dead lung tissue by inflammatory debris
lung abscess
where is lung abscess more common?
right lung
- Pus-filled pockets that develop in the pleural space
epmyema
- Used to indicate inconsequential thoracic pain
pleurisy
- Excess fluids that collects in the pleural cavity
- Frequent manifestation of serious thoracic disease, usually pulmonary or cardiac in origin
pleural effusion
what is hemothorax
pleural effusion containing blood
what is the best position to diagnose pleural effusion?
erect
- Usually considered benign but are included in WHO’s classification of lung cancer as they tend to invade local tissues, w/c sometimes metastasize
BRONCHIAL CARCINOID TUMOR
- Tumors originating in the lung parenchyma/ w/in the bronchi
BRONCHOGENIC CARCINOMA