C06 Transport in Human (Part 1)

What is/are the function(s) of white blood cells?

1. 1. To transport oxygen around the body

2. 2. To ingest bacteria that have entered the body

3. 3. To produce antibodies that bind pathogens together

4. 4. To aid in blood clotting when there is a cut

• 1 only

• 3 only

• 4 only

• 2 and 3 only

After a patient underwent heart surgery, there was an increase in the number of white blood cells in his body. What could be a possible reason for this increase?

• He might need more nutrients to be transported around his body

• He might have developed an infection after the surgery

• He might need more oxygen to help him recover faster

• He might need to accelerate the clotting of blood to prevent excessive blood loss after surgery.

Which blood component releases antibodies?

• phagocytes

• lymphocytes

• platelets

• red blood cells

After centrifugation, blood separates into three layers as shown. Layer X is yellowish and transparent while Layer Y is dark red in colour.

What are the functions of blood component in X and Y respectively?

• A

• B

• C

• D

A person living at a high altitude (e.g. on a mountain), where there is low oxygen concentration will adapt physiologically by

• decreasing the number of red blood cells

• feeling dizzy and nauseous

• increasing haemoglobin production

• increasing his breathing rate

Name the blood components labelled X, Y, Z

• X: White Blood Cell, Y: Red Blood Cell, Z: Platelets

• X: White Blood Cell, Y: Red Blood Cell, Z: Plasma

• X: Red Blood Cell, Y: White Blood Cell, Z: Platelets

• X: Red Blood Cell, Y: White Blood Cell, Z: Plasma

What type of blood vessel is shown in figure number 2?

• vein

• artery

• capilary

• aorta

The highly branched nature of capillaries results in

• the blood vessel being very delicate.

• a high surface area for material exchange.

• a slow blood flow to allow more time for material exchange.

• all of the above.

Figure shows the blood pressure in different parts of the circulatory system of a human. Identify blood vessels P, Q, R and S.

• A

• B

• C

• D

Blood samples were taken from two blood vessels, R and S. Refer to the table below to identify these two blood vessels.

• R: Pulmonary artery

  S: Hepatic vein

• R: Pulmonary artery

  S: Hepatic artery

• R: Pulmonary vein

  S: Hepatic vein

• R: Pulmonary vein

  S: Hepatic artery