respiratory system Flashcards
what is respiration?
process of gas exchange, involving inhalation and exhalation
what is the conducting portion of respiratory system?
Conducts and transfers air in the nose and paranasal sinuses, nasal cavity, pharynx, larynx, trachea, bronchi, and bronchioles to the terminal bronchioles, and no gas exchange
function of nasal chonchaes?
increase air turbulence, gives air chance to humidify, cause air to swirl so foreign particles get trapped in mucus
what happens with gas exchange?
oxygen is taken from the lungs to the tissues and carbon dioxide is diffused into the alveoli and is then expelled when we exhale
what is the respiratory portion?
gas exchange occurs here in the respiratory bronchioles, alveolar ducts, and the alveoli
what is carbon dioxide?
waste product of cellular activity
what happens with filtering air?
occurs in the nasal cavity, the hairs in nose trap particles in the mucus
what is phonation?
happens in the larynx and its responsible for producing speech
what is the larynx and its fucntion?
anterior to the esophagus, voice box, and its function is to transport air to trachea to brochi to lungs, protects lungs from food and liquid and phonation production
how is air warmed and humidified?
the mucosa in the nasal cavity moistens the air coming in and the blood vessels warm blood
function of nasal cavity?
warming and humidifying air, filtering air, and olfaction
what is the process of olfaction?
upper portion of nasal cavity has olfactory epithelium (PCCE), bipolar neurons
what are the characteristics of the nasal cavity?
subdivided by nasal septum, floor is made up of hard and soft palate, has PCCE and olfactory epithelium
what are the three bones on lateral sides of nasal cavity?
superior, middle, and inferior conchae
what are paranasal sinuses?
paired cavities within some of the skull bones that connect to the nasal cavity, including maxilla. ethmoid, and sphenoid
what is the laryngopharynx?
from hyoid bone to superior border of the esophagus, directly behind the superior larynx, transports both food and air, contains nonkeratinized stratified squamous epithelium
what are the functions of paranasal sinuses?
warms and humidify air, resonance of voice, and helps lighten skull
what is the oropharynx?
from the soft palate to the hyoid bone, directly behind the oral cavity, both food and air travel here, contains nonkeratinized stratified squamous epithelium
what is the nasopharynx?
directly behind the nasal cavity, inferior border is soft palate, has PCCE and opening for auditory tube
what is the pharynx?
connects nasal cavity and mouth to the larynx and esophagus, contains group of tonsils
what is the function of pharyngeal, palatine, and lingual
attack/destroy antigens before they get too far