Lesson Worksheet: Components of the Human Immune System Biology

In this worksheet, we will practice describing the structure and function of the organs, cells, and chemicals of the immune system.

Q1:

Lymphocytes are white blood cells that play a key role in the immune response. Which type of lymphocyte produces antibodies?

  • ACytotoxic T cell
  • BT suppressor cell
  • CB cell
  • DNatural killer cell
  • ET-helper cell

Q2:

What is a cytokine?

  • AA globular protein that binds specifically to antigens
  • BAn enzyme that destroys microbes in the blood and other body fluids
  • CA chemical messenger that mediates communication between immune cells
  • DA phagocyte that is active during an inflammatory response
  • EA structure in the lymph node where lymphocytes mature

Q3:

The spleen is a site for maturation of some white blood cells.

What is another function of this organ?

  • AIt breaks down aging red blood cells.
  • BIt breaks down aging macrophages.
  • CIt makes and stores antibodies.
  • DIt makes blood clotting proteins.
  • EIt makes red blood cells in adults.

Q4:

Which immune cell carries out phagocytosis during an immune response?

  • ANeutrophil
  • BHelper T cell
  • CCytotoxic T cell
  • DMast cells
  • ENatural killer cell

Q5:

Where do all white blood cells originate?

  • AThymus
  • BSpleen
  • CLymph nodes
  • DLiver
  • EBone marrow

Q6:

Where do precursor T lymphocytes go to complete their maturation?

  • AThymus
  • BLiver
  • CBone marrow
  • DLymph nodes
  • ESpleen

Q7:

The organs of the immune system are scattered throughout the body, as shown in the figure.

What is the name of organ X?

  • ASpleen
  • BAdenoid
  • CTonsils
  • DBone marrow
  • EThymus

Q8:

The figure shows a macrophage. What is the main function of this cell?

  • ATo secrete antibodies
  • BTo release histamine
  • CTo activate blood clotting
  • DTo engulf pathogens

Q9:

The figure shows a cross section of a lymph node.

What cells can be found inside the structure?

  • ALymphocytes, macrophages, and other white blood cells
  • BOnly T lymphocytes in their final stages of maturation
  • CStem cells that develop into all types of blood cells
  • DAging red blood cells and their breakdown products

Q10:

The organs of the immune system are scattered through the body, as shown in the figure. Which organ is the spleen?

  • AA
  • BD
  • CB
  • DE
  • EC

This lesson includes 17 additional questions for subscribers.

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