7: Mass Transport Flashcards
Loading/associated with oxygen
The process by which haemoglobin binds with oxygen
Unloading/dissociated with oxygen
The process by which haemoglobin releases its oxygen
The oxygen dissociation curve
The graph of the relationship between the saturation of haemoglobin with oxygen and the partial pressure of oxygen
Positive cooperatively
It takes a smaller increase in the partial pressure of oxygen to bind to the second oxygen molecules than the first
Atrium
Upper chamber of the heart that receives blood. Thin-walled, elastic and stretches as collects blood
Ventricle
Lower chamber of the heart. Thick walled to contract strongly to pump the blood to the extremities of the body
Coronary arteries
The blood vessels that the heart supplies itself with
Stroke volume
The volume of blood pumped at each ventricular contraction of the heart
Systole
The stage in the cardiac cycle in which the heart muscle contracts
Diastole
The stage in the cardiac when the heart muscle relaxes
Tissue fluid
Fluid that surrounds the cells of the body. It has a composition similar to that of blood plasma except that it lacks proteins
Ultrafiltration
Filtration assisted by blood pressure
Xylem vessels
Hollow tubes made of dead cells that transport water
Turgid
A plant cell that contains the maximum volume of water it can
Transpiration
The evaporation of water from leaves
