Exam 11: Body Defences

A single mutation induced by a carcinogen is usually sufficient to convert a normal cell into a cancer cell.

Indicate whether the following characteristics apply to the Fab or Fc region of an antibody, labelled a. and b. (Options may be used more than once or not at all.) -highly variable between different antibodies of the same class

The ____________________ is the layer of the skin without a direct blood supply.

Diapedesis refers to the chemical attraction of phagocytes to areas of injury, inflammation, or bacterial invasion.

The type of immune cells selectively invaded by AIDS virus is the ____________________.

____________________ cells derived from activated B lymphocytes are specialized for antibody production.

Match the defence molecule(s), labelled a. through h., with the correct characteristic. -produced by plasma cells

Which of these cells are NOT found in the epidermis

Match the condition, labelled a. through g., with the characteristic. -the immune system fails to recognize and tolerate particular self-antigens

Match the type of T cell, labelled a. through e., with its characteristics. (Options may be used more than once or not at all.) -secrete macrophage-migration inhibition factor

Indicate the secretory product and function of the following three specialized skin structures. a. sweat glands secretory product_____________ function ___________ b sebaceous glands secretory product_____________ function ___________ c hair follicles secretory product_____________ function ___________

Which of these statements does NOT describe T cells

A(n) ____________________ is a low-molecular-weight molecule that becomes antigenic by attaching to body proteins.

Severe burns of the skin can result in life-threatening circulatory disturbances.

A sneeze expels irritant material mainly from the oesophagus.

B cells bind with HLA self-antigens.

Type A blood has the anti-A antibody.

Lymphocytes can recognize and be activated only by antigens that have been processed and presented to them by ____________________.

Match the antibody type, labelled a. through e., with the correct characteristic. -serves as the B-cell surface receptor for antigen attachment

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