Chapter 9 test

Which of the following comparisons of red blood cells and phagocytes is incorrect?

• Red blood cells: biconcave disc shape Phagocytes: irregular in shape

• Red blood cells: fewer in number in the blood Phagocytes: greater in number in the blood

• Red blood cells: do not have a nucleus Phagocytes: have a nucleus

• Red blood cells: red in colour Phagocytes: colourless

The graph shows the changes in two parameters, P and Q, along different types of blood vessels in the human circulatory system.

What do P and Q represent respectively?

• P: blood pressure Q: velocity of blood flow

• P: diameter of the vessel Q: blood pressure

• P: velocity of blood flow Q: diameter of the vessel

• P: velocity of blood flow Q: blood pressure

All veins

(1) carry blood towards the heart.

(2) carry deoxygenated blood.

(3) have thin muscle walls.

• (3) only

• (1) and (2) only

• (1) and (3) only

• (2) and (3) only

The diagram shows the cross section of an artery.

What are the functions of tissue X?

(1) It provides force to push the blood along the artery.

(2) It helps the artery withstand high blood pressure produced by the heart.

(3) It regulates the amount of blood flowing through the artery.

• (1) and (2) only

• (1) and (3) only

• (2) and (3) only

• (1), (2) and (3)

Which of the following combinations correctly describes the states of tricuspid valve and semilunar valves when the right ventricle is relaxing?

• Tricuspid valve: closed Semilunar valves: closed

• Tricuspid valve: open Semilunar valves: closed

• Tricuspid valve: open Semilunar valves: open

• Tricuspid valve: closed Semilunar valves: open

Which of the following blood vessel(s) carry/carries deoxygenated blood?

• 1 only

• 2 only

• 2 and 3 only

• 3 and 4 only

Vessel 5 supplies nutrients to the cardiac muscle. It receives blood from

• 1.

• 2.

• 3.

• 4.

Which of the following characteristics of capillaries allows the formation of tissue fluid?

• They are in close contact with tissue cells.

• They are differentially permeable.

• They have a large cross-sectional area.

• They have a large surface area.

Which of the following are the functions of the lymphatic system?

(1) To filter bacteria.

(2) To return tissue fluid back into the blood circulation.

(3) To absorb and transport lipids.

• (1) and (2) only

• (1) and (3) only

• (2) and (3) only

• (1), (2) and (3)

P, Q, R and S are four different kinds of fluid in a human body. According to the descriptions, identify P, Q, R and S.

• P: lymph Q: blood entering capillary bed R: tissue fluid S: blood leaving capillary bed

• P: lymph Q: blood leaving capillary bed R: blood entering capillary bed S: tissue fluid

• P: blood leaving capillary bed Q: tissue fluid R: lymph S: blood entering capillary bed

• P: tissue fluid Q: blood leaving capillary bed R: blood entering capillary bed S: lymph