Lab #4 Flashcards
What lines the nasal cavity, paranasal sinus, passages
pseudostratified ciliated columnar epithelium
what are the 4 paranasal sinuses
Frontal, sphenoid, ethmoid, maxillary
Function: Voice resonance, storage of mucus, lightens skull
What is function of nasal conchae
warms, swirls, moistens air
What is the nasal septum made of
Ethmoid bone & hyaline cartilage (Separates nasal cavity in halves)
Where is the nasopharynx located
Below nasal cavity but above the soft palate.
-Internal nares, auditory tube hole, pharyngeal tonsils soft palate (floor)
Where is orthopharynx located
Soft palate to the hyoid bone (both food and air)
-Uvula, palatine tonsils, lingual tonsils, salivary glands
Where is the laryngopharynx located
Below the hyoid bone to the esophagus (both food and air)
-Entrance to esophagus, glottis, epiglottis
What cartilage is epiglottis
elastic cart.
What cartilages are in the larynx
- Thyroid cartilage(Hyaline)
- cricoid cartilage (Hyaline)
- tracheal cartilage (Hyaline)
- epiglotis (Elastic)
what is in the interior of the larynx
- Vocal folds
- Glottis
Explain the path air will go through
Trachea - primary bronchus - secondary bronchus - tertiary bronchus - bronchioles - terminal bronchioles - respiratory bronchioles - alveolar ducts - alveoli + alveolar sacs
What is bronchoconstriction
Tighten smooth muscle of bronchi
what is the hilum of the lung
indentation where the bronchi enter the lung
Explain what everything looks on lung slide
- Alveolar duct: bigggg air sac
- alveolus: tinier air sac
- Bronchiole: Shrively
- Blood vessel: Round
what does smokers lung look like
black
what does emphysemic lung look like
thinned out, less alveoli
Where is the esophagus in relation to the trachea
posterior
Explain the layers of the lungs
Parietal pleura: Covers cavity wall (outer)
Serous fluid:in between allows for frictionless movement
Visceral pleura: covers lung itself
What does the diaphragm do
Change thoracic volume, contracts and draws air into lungs
do bronchioles have cartilage
no
What is Tidal volume (TV)
amt of air exchanged in single breath under resting conditions
What is inspiratory reserve volume
additional air that can be inhaled over + above tidal volume
what is expiratory reserve volume
additional air that can be voluntarily exhaled after a normal respiration
What is vital capacity
maximum amt of air that can be moved in and out of lungs in a single respiratory cycle
