blood, tissue fluid and lymph- transport in animals

Question 1

blood

Answer 1

• consists of plasma
• carries dissolved hormones, mineral ions, amino acids, red blood cells etc
• plasma makes up 55% of blood (water rest)

Question 2

functions of blood

Answer 2

• transport of :O2,CO2 digested food from small intestine, nitrogenous waste products from cells to excretory organs, hormones, food molecules from storage compounds, platelets, antibodies
• maintain constant body temp and minimises pH changes

Question 3

tissue fluid

Answer 3

(watch video)

Question 4

lymph

Answer 4

• 10% of liquid that leaves blood vessels drains into a system of blind ended tubes called lymph
• similar structure to plasma and tissue fluid but contains fatty acids which have been absorbed into lymph via villi of small intestine walls
• one valves
• contains lymph nodes (lymphocytes build up there and produce antibodies)
• plays major role in defence mechanism of body