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Vet 1055 Ch 9 A breath of fresh Air
The Respiratory System
48
Veterinary Medicine
Undergraduate 1
05/02/2011

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Term
Define Ventilation.
Definition
the bringing in of fresh air. known as breathing.
Term
What does the Lower Respiratory Tract consist of?
Definition
Trachea, bronchial tree, and lungs.
Term
Deinfe Respiratory system.
Definition
brings oxygen from the air into the body for delivery via blood to the cells.
Term
Define Respiration.
Definition
is the exchange of gases (oxygen and carbon dioxide) between the atmostphere and the body cells.
Term
What does the upper respiratory tract consist of?
Definition
nose, mouth, pharynx, epiglottis, and larynx.
Term
What is the respiratory system divided into?
Definition
upper and lower tracts.
Term
Where does air enter and exit?
Definition
nose
Term
Define Nares.
Definition
external openings of the nose area.
Term
Define Nose.
Definition
nas/o and rhin/o
Term
Define Pharynx.
Definition
the area from the back of the nasal cavity and mouth to the larynz. (Throat) pharyng/o combing form.
Term
Define Larynx.
Definition
area between the pharynz and the trachea. Laryng/o cominbing form. Voice box.
Term
Define Trachea.
Definition
extends from the neck to the chest and passes air from the larynx to the thoracic cavity. Trache/o. throat.
Term
The trachea divides into what and why?
Definition
two branches at the tracheal bifurcation to form bronchi.
Term
Define bronchi.
Definition
bronch/o is the combining form.
Term
Define bronchioles.
Definition
smaller in diameter bronchi. bronchiol/o is the combining form.
Term
Define -ole.
Definition
small.
Term
Define Pleura.
Definition
the lung is encased in a membranous sac. pleur/o is the combining form.
Term
The pleura has what?
Definition
two layers and in between the two layers is the pleural space.
Term
Define Diaphragm.
Definition
the muscle that separates the thoracic and peritoneal cavities. diaphragmat/o and phren/o are combining forms.
Term
Define Dia-.
Definition
Across
Term
Define phragm/o.
Definition
combining from for wall
Term
What is the main organ of respiration.
Definition
the lung
Term
Define Lung.
Definition
main organ of respiration. This is divided into well defined divisions called lobes. pulm/o and plumon/o
Term
Define Lungs or Air.
Definition
pneum/o, pneumon/o, and pneu.
Term
Define alveoli.
Definition
air sacs in which gas exchange occurs. alveol/o is the combining form.
Term
Define Thoracic cavity.
Definition
contained within the ribs.
Term
Define Cost/o.
Definition
combining from for ribs.
Term
Define Thorac/o and -thorax.
Definition
chest cavity or chest.
Term
Define -pnea.
Definition
breathing
Term
Define ox/i, ox/o and ox/y.
Definition
oxygen.
Term
Define Carbon Dioxide.
Definition
Capn/o.
Term
Define Apnea.
Definition
not breathing
Term
Define Dyspnea.
Definition
difficult breathing
Term
Define Bradypnea.
Definition
slow breathing.
Term
Define Tachypnea.
Definition
Rapid breathing.
Term
Define Hyperpnea.
Definition
Fast or increased depth breathing.
Term
Define Hypopnea.
Definition
Slow or shallow respirations.
Term
Define Hypoxia.
Definition
below normal levels of oxygen.
Term
Define Hypercapnia.
Definition
Excessive CO2 in blood.
Term
Define Hypocapnia.
Definition
Decrease CO2 in blood.
Term
Define Vital capacity.
Definition
largest amount of air that can be moved in the lung (tidal volume + inspiratory and expiratory reserve volumes)
Term
Define minimal volume.
Definition
amount of air left in alveoli after the lung collapses.
Term
Define dead space.
Definition
air in the pathway of the respiratory system (termed dead because this air is not currently participating in gas exchange.)
Term
Define Residual Volume.
Definition
air remaining in the lungs after a forced expiration (amount of air trapped in alveoli).
Term
Define expiratory reserve volume.
Definition
amount of air expired over the tidal volume (extra amout that could be inhaled after normal inspiration.) (supplemental air)
Term
Define inspiratory reserve volume.
Definition
amount of air inspired over the tidal volume. (extra amount that could be inhaled after normal inspiration.)
Term
Define Tidal Volume.
Definition
amount of air exchanged during normal respiration (air inhaled and exhaled in one breath).
Term
Define Surfactant.
Definition
liguid that reduces alveolar surface tension and prevents collapse of the alveoli during respiration.
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