X A&P - Chp 18 - The Respiratory System Flashcards
Respiration
Gas Exchange
Ventilation
air moving in and out (exchange)
bicarbonate ion
result of Carbonic anhydrase reacting with Carbonic acid
carbonic acid
CO2 + H2O, result of increased CO2 levels in blood reacting with water in body to create acidosis.
bronchus
main stem
dyspnea
difficulty breathing
Epiglottis
covers trachea when you swallow food to ensure it only goes down the esophogus
hypercapnia
high levels of CO2
hypoxia
low levels of O2
phrenic nerves
stimulates diaphragm
pleura
serous membrane outside the organs?
pneumothorax
collapsed lung. air gets between lung and chest wall and forces lung down
surfectant
chemical to keep alveolus open. prevent them from sticking together if they collapse.
Phases of Respiration
1) pulmonary ventilation
2) external respiration (external gas exchange)
3) gas transport in the blood
4) internal respiration (internal gas exchange)
External Respiration
exchange of gasses btwn alveoli and capillaries in lung.
Internal Respiratoin
exchange of gasses btwn body cells and capillaries
How do CO2 and O2 always move?
Diffusion
Pharynx is shared with what system?
GI
Nostrils aka
nares
Larynx aka
voice box
what are rings on Trachea called?
C rings. The are NOT full circles (see pic)
Parietal layer of pleura (fist in balloon) touches organ, what layer faces up
visceral
Pleura
serous membrane that sorounds the lung
What are attached to Terminal Bronchiole
Alveoli
Conchae
ridged body structure in nose, covered with mucous membrane. causes inhaled air to be warmed and moistened.
Pharynx Structure and function
Carries air to respiratory tract and food to digestive system.
1) Nasopharynx
2) Oropharynx
3) Laryngeal pharynx
Thyroid Cartilage larger in men aka
Adams Apple
Vocal Folds
we call them vocal chords. vibrate faster with helium therefore causing higher voice
Larynx Structure
Btwn pharynx and trachea
1) thyroid cartilage
2) vocal folds
3) glottis
4) epiglottis
Epiglotis
flap that closes over trachea when swallowing food to guide into esophagus
O2 dissolves in water.
does not flow around like bubbles
Pulmonary ventilation
exchange of air between atmosphere and alveolar in lungs. Inhalation, breathing
External Gas exchange
in LUNGS, as O2 diffuses from alveoli into blood and CO2 diffuses out of blood to be eliminated
Internal Gas Excahnge
in TISSUE, as O2 diffused from blood to cells, CO2 from cells to blood
Cellular Respiration
cells take O adn use in breakdown of nutrients
Respiratory System Structure
- nasal cavity
- pharynx
- voice box
- larynx (windpipe, trachea
- lungs
Pharynx Structure
- nasopharynx (nose)
- Oropharynx (mouth)
- laryngopharynx (throat)
Paranasal sinuses
- resonating chamber for voice
- lessen skull’s weight