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22 Respiratory Sys

Human A & P chapter 22

QuestionAnswer
The main function of the respiratory system is to do what? To supply the body with oxygen and dispose of carbon dioxide
Movement of air into and out of the lungs so that gases are continuously changed and refreshed Pulmonary ventilation
Pulmonary ventilation also known as.. Breathing
External respiration is the movement of oxygen from where to where from the lungs to the blood
External respiration is the movement of carbon dioxide from where to where from the blood to the lungs
Transport of oxygen from the lungs to the tissue cells of the body; and CO2 from the tissue cells to the lungs Transport of respiratory gases
Transportation of respiratory gases is accomplished by which system using what? The cardiovascular system using blood and the transporting fluid
the actual use of oxygen and production of carbon dioxide by tissue cells is cellular respiration
The respiratory system includes: the nose, nasal cavity, and the paranasal sinuses; the pharynx, the larynx, and the trachea; the bronchi and their smaller branches; and the lungs which include the alveoli
The respiratory system is made up of what two zones? The respiratory zone, and the conducting zone
What is included in the respiratory zone? the respiratory bronchioles alveolar ducts, and the alveoli
The respiratory zone is the site of gas exchange
What is included in the conducting zone? all other respiratory passageways
The conducting zones function is to what? cleanse, humidify and warm incoming air. Air reaching the lungs has fewer irritants
4 things the nose does. provides an airway for respiration moistens and warms entering air filters and cleans inspired air serves as a reasonating chamber for speech
What are the four processes of respiration? Pulmonary ventilation External respiration transport of respiratory gases internal respiration
air enters the cavity by passing through the what? nostrils or nares
the nasal cavity is divided by what? midline called a nasal septum
posterior nasal apertures aka the choanae
roof of the nasal cavity is formed by the ethnoid and sphenoid bones of the skull
the floor is formed by the palate
hairs that filter coarse particles like dust and pollen vibrissae
contains smell receptors olfactory epithelium (mucosa)
this structure contains goblet cells and rests on mucous and serious glads respiratory mucosa
antibacterial enzyme in mucus lysozyme
natural antibiotics that help get rid of invading microbes defensis
why does our nose run when we're cold? ciliated cells become sluggish when exposed to air allowing mucus to accumulate in the nasal cavity instead of moving toward the throat to be swallowed
what causes us to sneeze? sensory nerve endings in the nasal mucosa trigger a sneeze reflex when they come in contact with irritating particles
together with the nasal cavity this structure warms and moistens the air paranasal sinuses
inflamation of the nasal mucosa rhinitis
nasal cavity infections often spread to other regions causing sinusitis (inflamed sinuses)
Commonly called the throat pharynx
3 regions of the pharynx superior to inferior nasopharynx oropharynx laryngopharynx
Structure that lies above the point where food enters the body, serving only as an air passageway nasopharynx
"little grape" uvula
two structures that move superiorly, closing off the nasopharynx to prevent food from entering the naval cavity uvula and soft palate
traps and destroys pathogens entering nasopharynx pharyngeal tonsil
help protect the middle ear against infections likely to spread from the nasopharynx tubal tonsil (pharyngeal tonsil also does this)
as the nasopharynx blends into the oropharynx, the epithelium changes from pseudostratified columnar to a more protective.. stratified squamous epithelium
this structual adaption is neccessary bc more friction and more chemicals accompanying food passage
oropharynx has what passing through it air and food
This structure is continuous with the esophagus laryngopharynx
laryngopharynx contains esophagus trachea
conducts food and fluids to the stomach esophagus
who has the right of the way during swallowing? food or air? food
why do we need to breathe air? to obtain oxygen
why do we need oxygen? because all the cells in your body require oxygen. without it they couldn't move, build, reproduce, or turn food into energy
what is the connection between the cardiovascular and respiratory systems body cells rely on the oxygen provided by the respiratory system, but the oxygen is picked up from the blood. the blood as the intermediary, while the heart and blood vessels pump blood around the body
filters, warms and moistens air nasal cavities
nasopharynx eustacian tube and pharyngeal tonsils
oropharynx uvula to epiglottis palatine and lingual tonsils
oral cavity opens into which region? oropharynx
laryngopharyx epiglottis to larynx opening = glottis
Created by: amouzon1