Blood and Blood Vessels

Question 1

What 4 COMPONENETS make up BLOOD?

Answer 1

• WBC
• RBC
• Platelets
• Plasma

Question 2

What is the FUNCTION of RED BLOOD CELLS?

Answer 2

• Transport O2 to Working Muscles
• Contains Haemoglobin that O2 binds onto

Question 3

What is the FUNCTION of PLASMA?

Answer 3

• Liquid that makes up over 1/2 the Vol. of blood
• Transports CO2, Hormones, Urea and Glucose

Question 4

What is the FUNCTION of WHITE BLOOD CELLS?

Answer 4

Protects body against pathogens and disease

Question 5

What is the FUNCTION of PLATELETS?

Answer 5

• Enables blood to Clot around Open Wounds
• Seals an Open Wound to stop bleeding

Question 6

Describe the STRUCTURE of the ARTERIES

Answer 6

• Thick, Muscular, Elastic walls
• Small Lumen
• High Pressure

Question 7

Describe the STRUCTURE and FUNCTION of ARTERIOLES

Answer 7

• Smaller arteries
• Distribute blood to Capillary Beds

Question 8

Describe the STRUCTURE of VEINS

Answer 8

• Large Lumen
• Valves to prevent Backflow
• Thin walls
• Low pressure

Question 9

Describe the FUNCTION of VENUOLES

Answer 9

Receive Blood from Capillary Bed & link with veins

Question 10

Describe the STRUCTURE and FUNCTION of CAPILLARIES

Answer 10

• 1 cell thick walls for Gaseous Exchange
• Narrow Lumen
• Transports waste products away from muscles