Respiration Flashcards
External Respiration
Lungs <—> Blood
Internale Respiration
Body cells <—> Blood
Cellular Respiration
Food + O2 to make ATP
Lungs
-Not muscular
-Very elastic
-Left lung has 2 lobes
-Right lung has 3 lobes
-Sponge-like
Smoking
-Tar build-up
-Fatty deposits
-Scar tissue
-Tumors
-Irreversible disease
-Rigid
Nasal Cavity
Walls lined with a mucous membrane and small hairs to trap dust/other particles
Epiglottis
Flap that covers opening of the trachea during swallowing, opens during breathing
Larynx
Passageway for air from pharynx to trachea (voicebox) - contains vocal chord
Lung Description
Essential organ of respiration, exchange CO2 for O2, made up of small sacs surrounded by capillaries
Ribs
Bones that protect the chest cavity
Pleura
Membrane that covers and protects the lungs, two layers with fluid in between for lubrication
Diaphragm
Muscle that assists breathing at bottom of chest cavity, contracts during inhalation, relaxes during exhalation
Intercostal Muscles
Muscles in between the ribs that allow ribs to move during breathing
Alveoli
Tiny air sacs coming off bronchioles
Bronchiole
Each bronchus divides into smaller and smaller branches called bronchioles
Bronchus
Trachea divides into these two tubes, one leads to each lung
Trachea
Windpipe, passageway for air to the lungs, flexible, made up of cartilage in a ‘C’ form
Esophagus
Muscular tube that allows food to pass between the pharynx to the stomach
Pharynx
Throat, the chamber that collects air from the nose and mouth, shared with digestive system
Uvula
Helps with speech, can contribute to snoring, helps prevent food from entering the nasal cavity
Inhalation
-Message from brain causes this
-Intercostals contract (up)
-Diaphragm contracts (down)
-Chest cavity increases in volume
-Pressure decreases
Exhalation
-No message from brain
-Intercostals relax (down)
-Diaphragm relaxes (up)
-Chest cavity decreases in volume
-Pressure increases
Tidal volume
Amount of air inhaled or exhaled in a normal breath
Expiratory Reserve
Volume you can force out after a normal exhalation
Vital Capacity
Volume of maximum inhalation and exhalation
Residual Volume
Air that remains in the lungs, cannot be forced out