CARDIOVASCULAR SYSTEM

ATRIUM - the receiving chamber of the heart, taking in blood from either the body of the lungs

VENTIRCLE - the pumping chamber of the heart; blood is ejected from here to either the body or the lungs

1 of 11

VALVES - are located between atria and ventricles, and ventricles and ateries, THEY PREVENT BACKFLOW

STROKE VOLUME - the volume of blood pumped out of the heart in one contraction

2 of 11

HEART RATE - number of times the heart beats per minute

CARDIAC OUTPUT - the volume of blood pumped out of the heart per minute

3 of 11

LETFT side of the heart - oxygenated blood

RIGHT side of the heart - deoxygenated blood

4 of 11

ARTERIES - carry blood away from the heart

VEINS - caryy blood towards the heart

5 of 11

Structure of arteries: the inner layer is a simple squamos epithelium surrounded by a connective tissue basement membrane with elastic fibres

Structure of veins: outer layer = connective tissue called the tunica adventica, the middle layer is a smooth muscle called tunica media, and the inner later is lined with endothelial cells called the tunica intima

6 of 11

Components of Blood: platelets, plasma, red and white blood cells

Function of Plasma: transport nutrients to vital organs, and maintains pH balance

7 of 11

Function of Platelets: cause clotting when cut to stop the bleeding

Functions of White Blood Cells: ingets pathogens and destroy them, fight infections,

8 of 11

Vascular Shunt Mechanism

Vascular shunt refers to the distrubution of blood around the body., during exercise the shunt mechanism takes oxygen to places that need it the most

9 of 11

Role of Arterioles in the VSM =

Role of Pre-Capillary Sphincters in the VSM =

10 of 11

impact of physical activity on the Cardiovascular system:

Short Term: increases heart rate which decreases risk of injury, increases stroke volume meaning more oxygen is getting around the body

11 of 11

Get Revising

CARDIOVASCULAR SYSTEM

Other cards in this set

Card 2

Front

Back

Card 3

Front

Back

Card 4

Front

Back

Card 5

Front

Back

Comments

Similar Sports Science resources: