Biology Form 4 KSSM Topic 10

Diagram 1 shows a structure of the heart and its associated blood vessels. Which of the following A, B, C and D carry blood to body tissue?

• A

• B

• C

• D

Structure X shown in Diagram 2 exists in veins. It has the function of...

• causing the blood to flow downwards to the feet

• preventing backflow of blood on its way back to the heart

• ensuring the muscles around it contract to squeeze the blood back to the heart

• pulsating in rhythm with the heartbeat as blood flows through it

Diagram 3 shows part of the pulmonary circulatory system. What is organ X?

• Liver

• Gills

• Lymph node

• Heart

Diagram 4 shows the blood circulatory system of an organism. Which of the following organism has the similar circulatory system as shown in the diagram?

• Fish

• Bird

• Frog

• Snake

P, Q, R and S are some common characteristics of leucocytes. Which are the characteristics of granulocytes?

• Q and S

• P and R

• R and Q

• R and S

Diagram 5 shows capillaries, tissues and vessel X. What is the fluid that flows into X?

• Blood

• Plasma

• Lymph

• Interstitial/tissue fluid

A man is having chest pain. He undergone angiogram to check the condition of his heart. Diagram 7 shows that structure X is affected in the angiogram. Which part of his heart may be affected?

• Sino-atrial node

• Tricuspid valve

• Coronary artery

• Aorta

Diagram 8 shows blood cell X in a blood sample. What is the possible reason for the high number of blood cell X?

• Allergic response

• Thrombosis

• Bleeding

• Immune response

Based on Diagram 9, what is the blood vessel that is labelled Y?

• Pulmonary vein

• Pulmonary artery

• Posterior vena cava

• Aorta

What is meant by a closed circulatory system?

• A circulatory system where blood flows into vessels that are not connected

• A circulatory system where blood is always contained in a continuous closed blood vessel and is distributed to the whole body.

• A circulatory system where blood flows through the heart twice in one cycle

• A circulatory system where blood flows through the heart only once