1Closed v open circulatory system
2Double circulatory system
heart > body > heart > lungs > ...
3Arteries: describe
away from heart. thick walls, small lumen, flows in pulses, lot of pressure from heart
4Veins: describe
towards heart. thin walls, large lumen, valves, flows steadily, low pressure from heart
5Capillaries: describe
one cell thick, very narrow lumen.
6Arteries _______ capillaries _______ veins
Arterioles, venules
7Pericardium
tough protective sac around the heart
8Draw the heart
Draw the heart
9Draw everything, portal system, renal, etc.
10Contraction of cardiac muslce
systole
11Relaxation of cardiac muscle
diastole
12Pulse
the expansion and contraction of the arteries due to the pumping action of the heart
13Blood pressure
the force of blood as it passes through an artery
14Lymph
a pale yellow coloured fluid containing water, white blood cells, proteins and lipids
(no red blood cells or platelets)
15Lymph vessels
blind ending tubes that carry lymph. many lymph vessels have valves
16Lymph nodes
small swellings along the length of many lymph vessels. lymph nodes filter bacteria and produce and store white blood cells
183 functions
• Collect & return tissue fluid to the blood
• Fight infection
• Transport digested fats & hormones