Ch23 transport in humans

Question 1

pulse

Answer 1

expansion and contraction of the arteries due to the pumping action of the heart

Question 2

blood pressure

Answer 2

force of blood as it passes through an artery

Question 3

lymph

Answer 3

pale yellow-coloured fluid containing water, white blood cells, proteins and lipids (but no red blood cells or platelets)

Question 4

lymph vessels

Answer 4

are blind-ending tubes that carry lymph. Many lymph vessels have valves

Question 5

lymph nodes

Answer 5

small swellings along the length of many lymph vessels. Lymoh nodes filter bacteria and produce and store white blood cells