Exam 12: Body Defenses

Indicate the immune response associated with the specific ailment below. a.serum sickness b.immediate hypersensitivity c.acquired immune deficiency syndrome d.delayed hypersensitivity e.immune-complex disease f.autoimmune disease g.severe combined immunodeficiency -The immune system fails to recognize and tolerate particular self-antigens

Bacterial multiplication depends on the availability of high concentrations of ____.

Match defense cell with the correct characteristic. a.keratinocytes b.melanocytes c.Langerhans cells d.Granstein cells -Most abundant cell type in the skin

It is thought that fever may be beneficial to fighting an infection because it reduces the availability of ____________________, thus reducing bacterial growth.

Describe how helper T cells become activated when interacting with macrophages, and then how helper T cells promote clonal development of B cells and cytotoxic T cells.Include in your answer the following: MHC-11, CD4, and TCR

A(n) ____________________ is the kind of microorganism that causes AIDS.

Which of the following is part of the inflammatory response?

Viral-blocking enzymes induced by interferon are activated only upon viral invasion of the cell.

_________ macrophages engulf foreign particles that might be inhaled into the small sacs in the lungs.

The type of immune cell selectively invaded by AIDS virus is the _________________ cell.

According to the ____________________ theory, when an antigen enters the body, it activates the particular clone of B cells that bear receptors on their surface uniquely specific for that antigen.

The inflammatory agent ____________________ is released from mast cells and basophils.

Indicate the characteristics that apply to bacteria and viruses by using the following code: a.bacteria b.viruses c.bacteria and viruses -Can become incorporated into a host cell such that the body's defense mechanisms turn against the cell

Clumping of foreign cells brought about by the formation of antigen-antibody complexes is known as ____________________.

Indicate whether the following characteristics apply to the Fab or Fc region of an antibody by using the following answer code: a.Fab region b.Fc region -Located in the "tail" region of an antibody

In typically nonregenerative tissues such as nerve and muscle tissue, lost cells are replaced mainly by ____________________ tissue.

Vasodilation of the blood vessels supplying a tissue increases the flow of blood to that area.

Opsonins

Adhesion of blood-borne leukocytes to the endothelial lining is known as ____________________.

Which of the following is not a means by which viruses can lead to cellular damage or death?