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Respiratory System
N/A
30
Physiology
Undergraduate 2
03/05/2010

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Cards

Term
Conducting division
Definition
part of respiratory system that consists only of the passages that serve airflow
Term
Respiration Meanings
Definition
1. ventilation of lungs
2. exchange of gases between air and blood and between blood and tissue fluid
3. use of oxygen in cellular metabolism
Term
Respiratory division
Definition
consists of alveoli and other gas-exchange regions
Term
Upper respiratory tract
Definition
airway from nose to larynx (head and neck)
Term
lower respiratory tract
Definition
airway from trachea to lungs
Term
Functions of nose
Definition
- cleanses inhaled air
- detects odor
-resonating chamber that amplifies voice
Term
Guard hairs
Definition
block inhalation of large particles
Term
nasal septum
Definition
divides nasal cavity into right and left chambers called nasal fossae
Term
Palate
Definition
separates nasal cavity from oral cavity and allows you to breathe with food in your mouth
Term
Goblet Cells
Definition
secretes layer of mucus that traps inhaled particles
Term
Pharynx
Definition
muscular funnel extending from choanae to larynx
Term
nasopharynx
Definition
posterior to choanae and dorsal to soft palate
- receives auditory tubes from middle ear and houses pharyngeal tonsil
-only passes air
Term
oropharynx
Definition
between soft palate and roof of tongue
- contains palatine and lingual tonsils
- -passes air, food and drink
Term
fauces
Definition
opening of oral cavity into the pharynx
Term
laryngopharynx
Definition
begins with union of nasopharyns and oropharynx
- esophagus begins here
-passes air, food and drink
Term
Larynx
Definition
voicebox; cartilage chamber that keeps food and drink out of airway and also produces sound

-during swallowing, muscles move larynx upward while tongue moves epiglottis downward to meet it so epiglottis directs food into esophageal dorsal to airway
Term
Glottis
Definition
opening of larynx and is guarded by flap of tissue called epiglottis
Term
Larynx in infants
Definition
-located relatively high and allows them to breathe while swallowing
-by age 2, muscle of tongue pushes it lower
Term
Epiglottic cartilage
Definition
most superior muscle in larynx,
supportive plate in epiglottis
Term
thyroid cartilage
Definition
largest muscle in larynx, top part is "adam's apple" or laryngeal prominence. testosterone stimulates growth of prominence
Term
cricoid cartilate
Definition
muscle in larynx that connects larynx to trachea
Term
arytenoid cartilage
Definition
pair of muscles in larynx, posterior to thyroid
- function in speech
Term
corniculate cartilages
Definition
pair of muscles in larynx that attach to arytenoid
- function in speech
Term
cuneiform cartilages
Definition
pair of muscles in larynx
Term
Intrinsic muscles of larynx
Definition
operate vocal cords by pulling on corniculate and arytenoid cartilages
- sounds formed into words by pharynx, oral cavity,tongue and lips
Term
extrinsic muscles of larynx
Definition
connect larynx to hyoid bone and elevates larynx during swallowing
Term
vestibular folds of larynx
Definition
closes glottis during swallowing
Term
vocal cords (vocal folds) of larynx
Definition
produce sound when air passes between them
Term
Trachea
Definition
-"windpipe" anterior to esophagus
-supported by C rings of hyaline cartilage that keeps it from collapsing when you inhale
- at inferior end, branches into right and left primary bronchi which supply the lungs
Term
trachealis
Definition
smooth muscle in gap of C rings that contracts to adjust tracheal airflow
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