Important structures and functions

Question 1

Arteries

Answer 1

Thick-walled vessels carrying blood away from the heart, with elastic tissue and smooth muscle

Question 2

Arterioles

Answer 2

Smaller vessels branching off arteries, feeding blood into capillaries

Question 3

Capillaries

Answer 3

Smallest blood vessels for metabolic exchange, one cell thick

Question 4

Venules

Answer 4

Intermediate vessels between capillaries and veins

Question 5

Tissue fluid

Answer 5

Liquid containing oxygen and nutrients, facilitating substance exchange between blood and cells

Question 6

Veins

Answer 6

Thin-walled vessels carrying blood to the heart, with valves to prevent backflow

Question 7

Hydrostatic pressure

Answer 7

Pressure created by blood flow, forcing fluid out of capillaries

Question 8

Osmotic pressure

Answer 8

Pressure pushing fluid back into capillaries due to solute concentration differences

Question 9

Lymphatic system

Answer 9

Network carrying lymph fluid, filtering waste and aiding immune defenses

Question 10

Lymph nodes

Answer 10

Structures filtering bacteria and foreign material from lymph fluid