Structure and function of the cardio-respiratory system Flashcards
What is the respiratory system?
The way air gets to lungs and muscles. Air passes through the mouth down to the alveolis located in the lungs.
What is gaseous exchange?
The oxygen that has been breathed in and passed through the alveolis go through the capillaries and combines with haemoglobin to form oxyhaemoglobin and is the carried round the body and to the muscles
What is aerobic excersises??
Takes place in the presence of oxygen
Generally excersises over a long period of time, not too fast and is steady.
The heart is able to supply the body with oxygen
What is an anaerobic excersises?
Takes place in the absence of enough oxygen
Excersises short in duration and at high intensity
What is an artery
Blood LEAVING the heart
What is a vein??
Blood ENTERING the heart
What is the vena cava?
The verbs cava us where the heart collects blood
What does pulmonary mean??
It’s to do with the lungs eg pulmonary veins
What does vasoconstriction mean???
Decrease if blood flow
Vessels tighten
What does vasodilation mean??
Blood flow increases
Vessels widen
What does strike volume mean??
Volume of blood pumped out of heart
What is cardiac output??
Volume of blood injected from heat
What is heart beat??
Heart beats per minute
