Difficulty: Easy

Average Score: 100%

Which of the following structures is correctly associated with its immune function?

Rationale

The spleen removes germs from the blood.

The spleen is a vital organ for immune function. It filters and cleans the blood, removing germs such as bacteria and viruses. The spleen also helps to control the level of blood cells, and stores platelets and white blood cells.

A (Bone marrow destroys worn out red and white blood cells.) YOUR ANSWER

This statement is incorrect. The primary function of bone marrow is to produce blood cells, including red blood cells, white blood cells, and platelets, not to destroy them. The destruction of worn-out red and white blood cells is generally carried out in the spleen and liver.

B (Tonsils are where T-cells are generated and mature.) YOUR ANSWER

This is not correct. T-cells are generated in the bone marrow and then move to the thymus where they mature. The tonsils, while part of the immune system, mainly function as a first line of defense against ingested or inhaled foreign pathogens.

C (The spleen removes germs from the blood.) CORRECT

This is the correct answer. The spleen acts as a filter for blood as part of the immune system. It detects and responds to pathogens like bacteria and viruses in the blood, helping to remove them.

D (Peyer's patches are where B-cells are generated and mature.) YOUR ANSWER

This statement is not accurate. Peyer's patches, located in the small intestine, are part of the immune system that monitor intestinal bacteria populations and prevent the growth of pathogenic bacteria in the intestines. B-cells, like T-cells, are produced in the bone marrow.

Conclusion

In conclusion, the spleen's function in the immune system is to remove germs from the blood. The other options provided do not correctly associate the listed structures with their immune functions. Bone marrow produces blood cells rather than destroying them, T-cells mature in the thymus not the tonsils, and B-cells are generated in the bone marrow, not in Peyer's patches.

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