The Respiratory System Worksheet 
Respiratory System
Respiration:
The primary function of the respiratory system is to obtain oxygen gas for cell metabolism and remove carbon dioxide waste.
Describe each of the following general processes of respiration. Ventilation- air is moved into and out of the lungs so the gases there are continuously changed and refreshed
external respiration- oxygen diffuses from the lungs to the blood, and carbon dioxide diffuses from the blood to the lungs
gas transport- oxygen is transported from the lungs to the tissue cells of the body, and carbon dioxide is transported from the tissue cells to the lungs. Uses blood as the transporting fluid
internal respiration- oxygen diffuses from blood to tissue cells, and carbon dioxide diffuses f from tissue cells to blood
Respiratory organs:
The organs of the respiratory tract can be divided into two groups-the upper respiratory tract (nose, nasal cavity, sinuses, and pharynx) and the lower respiratory tract (larynx, trachea, bronchial tree, and lungs).
Upper respiratory tract: Nose: The nose provides an entrance for air and has many internal hairs? for preventing large air particles from entering the nasal cavity.
Nasal cavity: The nasal cavity is a space posterior to the nose that is divided medially by the nasal septum.
Nasal conchae: What is their function? divide the cavity into passageways that are lined with mucous membrane, and help increase the surface area available to warm and filter incoming air
Cilia:
Particles trapped in the mucus are carried to the pharynx by ciliary action, swallowed, and carried to the stomach where gastric juice destroys any microorganisms in the mucus.
Lower respiratory tract: Pharynx: The pharynx (throat) is a common passageway for both the air and food and it aids in producing sounds for speech.
Larynx: The larynx is an enlargement in the airway superior to the trachea and inferior to the pharynx.
It helps keep particles
Respiration:
The primary function of the respiratory system is to obtain oxygen gas for cell metabolism and remove carbon dioxide waste.
Describe each of the following general processes of respiration. Ventilation- air is moved into and out of the lungs so the gases there are continuously changed and refreshed
external respiration- oxygen diffuses from the lungs to the blood, and carbon dioxide diffuses from the blood to the lungs
gas transport- oxygen is transported from the lungs to the tissue cells of the body, and carbon dioxide is transported from the tissue cells to the lungs. Uses blood as the transporting fluid
internal respiration- oxygen diffuses from blood to tissue cells, and carbon dioxide diffuses f from tissue cells to blood
Respiratory organs:
The organs of the respiratory tract can be divided into two groups-the upper respiratory tract (nose, nasal cavity, sinuses, and pharynx) and the lower respiratory tract (larynx, trachea, bronchial tree, and lungs).
Upper respiratory tract: Nose: The nose provides an entrance for air and has many internal hairs? for preventing large air particles from entering the nasal cavity.
Nasal cavity: The nasal cavity is a space posterior to the nose that is divided medially by the nasal septum.
Nasal conchae: What is their function? divide the cavity into passageways that are lined with mucous membrane, and help increase the surface area available to warm and filter incoming air
Cilia:
Particles trapped in the mucus are carried to the pharynx by ciliary action, swallowed, and carried to the stomach where gastric juice destroys any microorganisms in the mucus.
Lower respiratory tract: Pharynx: The pharynx (throat) is a common passageway for both the air and food and it aids in producing sounds for speech.
Larynx: The larynx is an enlargement in the airway superior to the trachea and inferior to the pharynx.
It helps keep particles