Respiratory System Module 3 Flashcards
(118 cards)
Movement of air into and out of lungs is called
Respiration or Pulmonary Respiration
Describe Respiration (in terms of O2/CO2)
O2 is obtained from the environment and delivered to cells and CO2 is transported from the cells to the environment
Takes place in the lungs (Diffusion of O2 into the bloodstream from the air in the lungs and diffusion of CO2 out of the blood stream to the air in the lungs)
External exchange of gases / Point of Pulmonary Circulation
Takes place in the tissues (Diffusion of O2 into the cells from the blood stream and diffusion of CO2 out of the cells and into the bloodstream)
Internal exchange of gases / Point of Systemic Circulation
Structures located outside the thoracic cavity
(Upper respiratory tract) Nose Pharynx Larynx Trachea
Structures located inside the thoracic cavity
(Lower respiratory tract)
Bronchi
Lungs
Nasal cavities are separated by the
Septum
Nasal cavities are lined with
Mucous membrane
Nasal conchae …
increases surface area and helps warm and humidify air
What are the functions of the mucous membrane
Warms air
Humidifies air
Traps foreign particles
Olfactory receptors
The opening of the nasal cavities are called
Nares
The throat is considered the
Pharynx
The superior portion of the pharynx located posterior to the nasal cavities is called the
Naso-Pharynx
The eustachian tubes…
open into the naso-pharynx and equalize on both ear drums
The extension of the palate that closes the naso-pharynx during swallowing
Uvula
The middle portion of the pharynx, located posterior to the oral cavity contains the palatine and lingual tonsils
Oro-pharynx
The inferior portion of the pharynx that opens anteriorly to the larynx and posteriorly to the esophagus
Laryngeal pharynx (opens to two different tubes)
Separates oral cavity and nasal cavity
Palate
The voice box also called the
Larynx
Cartilaginous structure that closes the larynx during swallowing
Epiglottis (Top of glottis)
Vibrates when air moves past them producing sound
Vocal cords
The space between two tubes is called the
Glottis
Forms the bulk of the anterior wall of the larynx, and serves to protect the vocal folds (“vocal cords”), which are located directly behind it.
Thyroid cartilage
Open areas in some of the bones in our skull, lined with mucous membrane and empties into the nasal cavity
Sinuses