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Lecture 26
Respiration I
31
Anatomy
Undergraduate 2
11/29/2010

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Term
nasal cavity
Definition
-nares
-nasopharynx
-floor
-skin
-septum
Term
nasopharynx
Definition
-connects to middle ear via auditory tube
-contains pharyngeal tonsils (adenoids)
Term
floor of nasal cavity
Definition
-hard palate-maxilla/palatine bone
Term
lateral nasal cavity
Definition
skin-lining-mucous membrane contain conchae (shelf like projections)
Term
medial nasal cavity
Definition
septum-anterior cartilage, posterior bone ethmoid/vomer
Term
nasal cavity lining
Definition
-mucosa
-goblet cells
-blood vessels
-olfactory epithelium
Term
mucosa
Definition
pseudostratified ciliated columnar
Term
goblet cells
Definition
-found in mucous membrane of epithelium
Term
olfactory epithelium
Definition
-in roof
-contains specialized nerve cells/fibers (CNI)
Term
beneath conchae are
Definition
meatuses for mucous/tears
Term
paranasal sinuses/nasolacrimal duct
Definition
drain through meatuses
Term
function of nasal cavity
Definition
-warms air
-sound resonance
-smell
Term
paranasal sinuses
Definition
-frontal, ethmoid, sphenoid, maxillary
-lessen weight of bone
-sound resonance
Term
pharynx (throat)
Definition
-5 in
-skeletal muscle
-mucous membrane of stratified squamous epithelium
-connects nasal/oral cavities to esophagus/larynx
Term
oropharynx
Definition
-contains lingual/palatine tonsils
Term
laryngopharynx
Definition
region where food is directed posteriorly to esophagus and air is directed anteriorly to larynx
Term
uvula/soft palate
Definition
prevent food from entering nasopharynx
Term
larynx
Definition
-connects laryngopharynx to trachea
-C4 to C6
-triangular shaped box of 9 cartilaginous plates
Term
3 types of cartilaginous plates in larynx
Definition
-thyroid
-cricoid
-epiglottis
Term
thyroid cartilage
Definition
Adam's apple
Term
cricoid cartilage
Definition
-signet ring shaped cartilage located inferior to thyroid cartilage
-complete ring
Term
epiglottis
Definition
leaf shaped plate of cartilage attached posterior/inferior to thyroid cartilage
Term
swallowing
Definition
larynx moves upward, epiglottis is tipped
Term
vocal cords
Definition
-located within larynx
-bands of elastic CT
-vibrate when air passes over to produce sound
Term
trachea (windpipe) location
Definition
-anterior to esophagus
-connects larynx to bronchi
Term
trachea (windpipe)
Definition
-composed of 16-20 C-shaped rings of hyaline cartilage
-fibrous CT composes posterior wall
-rigid yet flexible
-lined with pseudostratified ciliated columnar epithelium
Term
primary bronchi
Definition
-begin at sternal angle
-trachea bifurcates into right/left primary bronchi
-composed of c-shaped rings of cartilage composed of pseudostratified ciliated columnar epithelim and some smooth muscle
Term
secondary bronchi (lobar bronchi)
Definition
-one for each lobe of the lung
-left lung-2
-right lung-3
-increased amount of smooth muscle
Term
tertiary bronchi (segmental bronchi)
Definition
-one for each bronchopulmonary segment
-less cartilage, more smooth muscle
-cubiodal like epithelium
Term
terminal bronchioles
Definition
-only smooth muscle and epithelium
-open into alveoli ducts
Term
alveoli
Definition
simple squamous lined rounded grapelike regions where air exchange occurs
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