Gases exchanged between the pulmonary blood vessels and alveolus
Prevents Alveoli from collapsing
Collects remaining bacteria or particulates
Proceeds External Respiration
Blood exchanges gases with body tissues
Air Sacs
Located between the Alveolus and Capillaries
Holds the heart, posterior
Additional air that can be inhaled consciously
Additional air that can be exhaled consciously
Amount of air someone can consciously exchange with the environment
Remaining air in the lungs after a forced exhalation
Vital Capacity + residual volume
Amount of air exchanged by resting lungs
Site of Gas Exchange
Small Tubes Branching from the Bronchi
Located behind the heart
Most important stimulus for breathing
Collects sensory information from various body receptors and sends it to the VRG
Can be changed from Physical, Conscious, Emotional, and Chemical factors
Controls neurons for soft, quiet breathing
Collects dust and other foreign particles that move back up to the pharynx and swallowed
Also known as the windpipe, 12 cm long surrounded by horseshoe cartilaginous rings that keep the trachea from collapsing
Connects the larynx to the trachea
Protects the vocal cords and resonates sound, makes up the Adam's apple
Assists in closing the larynx to prevent food from entering the respiratory system
Produces sounds via volume, speech, and articulation
Also known as voice box, connects pharynx to trachea
Prevents food from entering the larynx
Opening of the larynx and esophagus, contains epiglottis
Oral portion of pharynx
Located in the mouth, in the soft palate
Also known as adenoid(s)
Nasal portion of pharynx
Removes foreign objects and pathogens
Made of muscle
Divided into two Nostrils or Nares
Ridges that increase mucosal surface area
Lightens the skull, produces mucus, etc...
Made of bone
Posterior to the nose
Also known as the throat
Modifies timing and smooth control of breathing by communicating with the VRG
Part of the brainstem that controls two respiratory control centers
Surrounds alveolus
Surrounds the lungs
Between each rib of the rib cage
2 lobes
Connected to ribs at the bottom of the chest cavity
3 lobes
