Respiratory Flashcards
organs of the upper respiratory tract (4)
nose, nasal cavity, sinuses, pharynx
organs of the lower respiratory tract (4)
larynx, trachea, bronchial tree, lungs
2 functions of respiratory system
supplies body with o2, releases CO2 out of the body
wall that separates the nasal cavities
nasal septum
3 bony structures that project from the lateral walls of the nose to increase surface area
nasal conchae
lines the nose and is supplied with capillaries which hold a large supply of blood to heat and moisten air as it passes
mucous membrane
cilia
ciliated epithelial cells that push dirt and particles to the throat
how much mucus produced per day?
over 1 pint
small cavities found in the bones of the skull that assist nasal cavities
sinuses
tube-like structure that is a passage for breathing and digestive tracts. made of muscle, lined with mucous membrane
pharynx (throat)
3 regions of pharynx
nasopharynx (back of nose to soft palate); oropharynx (soft palate to hyoid bone in lower jaw); laryngopharynx (hyoid to oesophagus)
Voice box, part of air passage connecting pharynx and trachea
larynx
narrow passageway in larynx between vocal cords
glottis
flap of tissue that closes when swallowing to prevent food from going into the lungs
epiglottis
cartilage protruding from midline of neck that supports the wall of the larynx
adam’s apple
Windpipe; nearly cylindric tube in neck made of cartilage and membrane, extending from larynx to 5th thoracic vertibra
trachea
what is the trachea covered by
thyroid gland
lobes in lungs
2 in left, 3 in right
pleural membrane
sac covering each lung
inner layer of pleural membrane
visceral pleura
outer layer of pleural membrane
parietal pleura
between visceral and parietal pleura; secretes fluid
pleural cavity
uppermost part of each lung
apex
midline region where blood, lymphatic vessels, nerves, bronchial tubes meet lungs
hilum or hilus
small sac-like structure
alveolus
tiny air sac where co2 leaves blood and o2 is taken into blood; made up of single epithelial cell layer and elastic fibers
pulmonary alveolus
substance of thin film that covers alveoli to prevent collapsing
surfectant
one of several large air passages in lungs
bronchus
smallest branch of bronchus, leads to tiny cluster of air sacs
bronchioles
space between right and left lungs; contains heart, aorta, oesophagus, and bronchi
mediastinum
breathing in
inspiration
breathing out
aspiration
surfactant prevents the alveoli from
collapsing
Oxygen is transported through the blood attached to a protein called
hemoglobin
in the nose, air is
filtered, moistened, brought to body temperature
oxygen component: inhalation and expiration
10.9% inhalation, 14% expiration
co2 component: inhalation and expiration
0.04% inhalation, 5.60% expiration
how does o2 diffuse into the blood
pulmonary capillaries, connecting with RBCs, forms weak bond with hemoglobin
normal breathing rate
12-20 times per minute
respiratory centres in the brain
medulla and pons
major muscle of inspiration
diaphragm
listening to sounds within the body
ausculation
tapping on a surface to determine the difference in the density of the underlying structure
percussion
scratchy sound produced by pleural surfaces rubbing against each other
pleural rub
fine crackling sounds heard in auscultation when there’s fluid in alveoli
rales
loud rumbling when fluid in alveoli
rhonchi
material expelled by spitting
sputum
strained/high pitched sound on inspiration caused by obstruction in pharynx/larynx
stridor
continuous whistling during breathing
wheezes
acute viral infection in kids with obstruction of larynx, barking cough, stridor
croup
acute infection of throat/upper resp tract caused by diptheria bacterium
diptheria
nosebleed
epistaxis
whooping cough
pertussis
chronic inflammatory disorder due to bronchial edema
asthma
chronic dilation of bronchus, usually secondary to infection
bronchiectasis
inflammation of bronchi over time
chronic bronchitis
inherited disorder of exocrine glands resulting on thick mucinous secretions
cystic fibrosis
collapsed lung
atelectasis
hyperinflation of air sacs with destruction of alveolar walls
emphysema
NSCLC
non small cell lung cancer
abnormal lung cancer caused by dust exposure
pneumoconiosis
acute inflammation and infection of alveoli, fill w pus
pneumonia
large collection of puss in lungs
pulmonary abscess
fluid in alveoli/bronchioles
pulmonary edema
clot in lung vessel
pulmonary embolism
scar tissue in connective lung tissue
pulmonary fibrosis
granulomas develop in lungs/lymph nodes
sarcoidosis
rare malignant tumour in pleura
mesothelioma
abnormal accumulation of fluid in pleural cavity
pleural effusion
inflammation of pleura
pleurisy/pleuritis
collection of air in pleural space
pneumothorax
radioactive glucose injected in lungs to reveal metabolic activity
positron emission tomography
detection device records radioactivity in lungs
ventilation-perfusion scan
large surgical incision of chest
thoracotomy