revision cardiovascular

These have elasticated thick walls to withstand high pressure

• Veins

• Arteries

• Capillaries

The amount of blood in the heart, after filling and before a contraction is...

• end systolic volume

• End diastolic volume

• Stroke volume

• Tidal volume

Amount of blood in the heart after a contraction is...

• End diastolic volume

• End systolic volume

• stroke volume

• tidal volume

Blood from the body/muscles comes into the heart through the Vena cava and into the

• Right ventricle

• Right Atrium

• Left ventricle

• left atrium

The valve between the left atrium and left ventricle is the

• tricuspid value

• bicuspid valve

• semi lunar valve

• mitral valve

The electrical impulse creating a contraction follows this path...

• SA node, ventricular contraction, AV node, bundle of HIS, purkinje fibres, atrial contraction

• SA node, impulse travels across RA/LA, contraction of atria, AV node, bundle of HIS, purkinje fibres, ventricular contraction

• SA node, AV node, bundle of HIS, purkinje fibres,

• AV node, RA/LA, contraction of atria, SA node, bundle of HIS, purkinje fibres, ventricular contraction

this vessel is 1 cell thick to allow gaseous exchange

• veins

• arteries

• capillaries

Veins have thinner walls than arteries because

• otherwise the valves wouldn't fit

• blood is under lower pressure

• it allows contraction of muscles to create a muscle pump

• to allow gaseous exchange

• increases

• decreases

• stays the same

cardiac hypertrophy is...

• increase size of heart muscle

• increase size of heart

• increase size of heart chamber

• all of the above

Answer explanation

2 answers for the exam board on mark scheme....increase size of heart vessel (1) which mean heart can hold more blood so increase stroke volume and cardiac hypertrophy (1) which is increase in heart muscle so more forcible contraction and increase stroke volume. 2 marks here for adaptations