Transport Tcer Iqa

Diagram 11 shows part of human blood vessels. Which of the following is correct about X?

• The presence of valve
• Thick muscular wall
• Transport deoxygenated blood
• Blood flows under lower pressure

The following statements are the characteristics of blood transported by a blood vessel in the human body.
* High concentration of oxygen
* Low concentration of carbon dioxide
* Low blood pressure
What is this blood vessel?

• Aorta
• Vena cava
• Pulonary vein
• Pulmonary artery

Diagram 18 shows a cross section of the human heart. Which part A, B, C and D pumps the blood into the pulmonary artery?

• A
• B
• C
• D

Diagram 11 shows the longitudinal section of a vein. What is the role of X?

• Decrease the size of the lumen of vein
• Prevent the back flow of the blood
• Increase the blood pressure in the vein
• Speed up the flow of blood in the vein

• A
• B
• C
• D

Which of the following substance transports oxygen?

• Haemolymph
• Haemoglobin
• Fibrinogen
• Plasma

• A
• B
• C
• D

Diagram 12 shows human blood vessel. What happens if structure X is not functioning?

• Blood flow increases
• Blood pressure increases
• Blood flows in one direction
• Blood flows backwards

Diagram 16 shows a bar chart of oxygen concentrations in blood samples taken from different blood vessels. Which blood samples A, B, C, D is taken from the pulmonary vein?

• A
• B
• C
• D

• A
• B
• C
• D