Organisation Flashcards
(19 cards)
Where does gas exchange happen?
Alveoli-lungs
What happens in the alveoli?
(Process)
Oxygen enters
Moves through the one cell think alveolus by diffusion
Enters the capillary and goes to the lungs
Carbon dioxide goes from the heart and by diffusion enters the alveoli from the capillaries
Co2 leaves the alveoli
What are the 4 components of blood?
Plasma
White blood cells
Platelets
Red blood cells
What is plasma
The liquid part of blood
Dilute of salts,glucose, amino acids, vitamins, urea, proteins and fats
What are white blood cells involved in
The immune system (fights off pathogens)
What are platelets involved in
Making blood clots/ scabs
What are red blood cells involved in
Carrying oxygen
What is the function of veins?
Take blood towards the blood
What is the function of capillaries
Gas exchange
What is the function of the arteries
To take blood away from the heart.
What has thin walls
Veins
What has thick walls
Arteries
What has one cell thick walls
Capillaries
What size lumen does a vein have
Large
What size lumen does a capillary have
Small
What size lumen does a arteries have
Narrow
What is the process of blood flow in the heart?
Superior/ inferior vena cava
Right atrium
Tricuspid valve
Right ventricle
Pulmonary valve
Pulmonary artery
Lungs
Pulmonary vein
Left atrium
Mitral valve
Left ventricle
Aortic valve
Aorta
Body
Superior/inferior vena cava
Which side of the heart has thicker muscles and where?
The left side has thicker muscles that surround the left ventricle
What is the equation for cardiac output?
Stroke volume (ml) x heart rate (bpm) =cardiac output (Litres/min)
