Respiratory System (For Exam 3) Flashcards
Functions of the Respiratory System
gas exchange air conditioning sound production olfaction defense
What is the respiratory system’s function of gas exchange?
it brings oxygen into the body and bloodstream and removes carbon dioxide
What is the respiratory system’s function of air conditioning?
adds warmth and moisture to the air we breathe in
What is the respiratory system’s function of sound production?
a specialized part of the respiratory system (the larynx) produces sound for speaking when air passes through during exhalation
What is the respiratory system’s function of olfaction?
specialized tissue in the nasal cavity carries information regarding smells
What is the respiratory system’s function of defense?
mucus (secreted by mucous cells) protect the fragile respiratory lining from drying out but also traps dirt particles. Lymphoid tissue associated with the respiratory tract monitor the air we breathe or unwanted particles and microorganisms
Upper Respiratory Tract
nasal cavity (and paranasal sinuses) pharynx
Lower Respiratory Tract
larynx
trachea
bronchi
lungs
What divides the nasal cavity into left and right parts?
nasal septum (made of cartilage and bone)
The nasal cavity is lined with…
mucous membrane
Where are the superior, middle, and inferior projections called conchae in the nasal cavity?
lateral walls
The superior and middle concha are part of what bone?
ethmoid bone
Under each concha is a groove called a…
meatus
Outgrowths of the nasal cavity form…
paranasal sinuses
Sinuses can be found in which bones?
maxillary
frontal
ethmoid
sphenoid
Tears drain into the nasal cavity, under the inferior concha, from the…
nasolacrimal duct
The pharynx is the area located posterior to the…
nasal cavity (nasopharynx) oral cavity (oropharynx) larynx (laryngopharynx)
What is the pathway of air (that enters through the nose) in the pharynx?
nasopharynx –> oropharynx –> larynx
What is the pathway of food (entering from the mouth) in the pharynx?
oropharynx –> laryngopharynx –> esophagus
The eustachian (auditory) tube connects the nasopharynx to the…
middle ear
- purpose: equalize pressure in the middle ear
What does the pharyngeal tonsil do?
monitors air for microorganisms and initiates an immune response if necessary
Where are the palatine tonsils?
in the lateral walls of the oropharynx
What do the palatine tonsils do?
monitor the food we eat for microorganisms, initiating an immune response if necessary
What is the larynx commonly known as?
the “voice-box”
The larynx is composed of…
cartilage and muscles and is lined with a mucous memrbane
The larynx is intimately associated with which bone?
hyoid bone
What is the structural framework of the larynx?
thyroid cartilage cricoid cartilage arytenoid cartilage corniculate cartilages epiglottis
Thyroid Cartilage
large, unpaired cartilage that is C-shaped (open in the back) which forms the laryngeal prominence (Adam’s apple) in the front
Cricoid Cartilage
ring-like cartilage sitting inferior to the thyroid cartilage, articulates iwth its inferior horns
Arytenoid Cartilage
paired pyramidal cartilages that sit atop the posterior aspect of the cricoid cartilage; each with an apex, muscular process, and vocal process (for the attachment of vocal ligaments)