respiratory system Flashcards
(17 cards)
Function of the respiratory system
is to pull in oxygen for your body’s cells and get rid of carbon dioxide, a waste product.
The structure of the respiratory system
consists of the nose, mouth, pharynx, larynx, trachea, bronchi, bronchioles, and lungs.
cardio-respiratory-respiration
(breathing) delivery of oxygen to and removal of carbon dioxide from the tissue.
Cardio-respiratory system- External respiration
ventilation and exchange of gases in the lung
cardio-respiratory- Internal respiration
exchange of gases at the tissue level (between blood and tissues)
movement of air into and out of the lungs
inspiration and expiration
pulmonary ventilation-inspiration
is the process that causes air to enter the lungs.
pulmonary ventilation- expiration
is the process that causes air to leave the lungs.
Pulmonary Diffusion
is the process where oxygen moves from the alveoli (tiny air sacs in the lungs) into the blood in the capillaries, and carbon dioxide moves in the opposite direction. ( Exchange of oxygen and carbon dioxide between the lungs and blood).
pulmonary Diffusion
diffusion of gases-partial pressures- oxygen and carbon dioxide
oxygen Transport-
haemoglobin concentration largely determines the oxygen-carrying capacity of blood (>98% of oxygen transported)
Oxygen Transport-
increased acidity and temperature of a muscle allows more oxygen to be unloaded there.
Oxygen Transport-
training affects oxygen transport in muscle.
Carbon Dioxide Transport-(Bicarbonate ions, plasma and haemoglobin)
dissolved in blood plasma (7% to 10%)
carbon dioxide transport
As bicarbonate ions resulting from the dissociation of carbonic acid (60% to 70%)
Carbon Dioxide Transport
bound to haemoglobin (carbaminohaemoglobin) (20% to 33%)
