chapter 12- lymphatic system

the process by which antibodies bind to specific sites on bacterial exotoxins (toxic chemicals secreted by bacteria) to block their harmful effects is called ________.

neutralization

What is the body's first line of defense against the invasion of disease-causing microorganisms?

skin and mucous membranes

the lymphnoid organ that destroys worn out blood cells

spleen

The innate (nonspecific) defense system and adaptive (specific) defense system make up the immune system.

true

Peyer's patches and the tonsils are part of the collection of small lymphoid tissues that protect the upper respiratory and digestive tracts from infection and are referred to as ________.

MALT or mucosa-associated lymphatic tissue

humoral immunity is provided by

antibodies

A(n) ________ is any substance capable of mobilizing our immune system and provoking an immune response.

antigen

What type of immunity results from vaccination?

artificially acquired active immunity

What is the best graft to have so as to avoid rejection of a transplanted tissue?

autografts

Which of the following is NOT one of the four most common indicators of the inflammatory response?

chills

What type of T cell can directly attack infected cells?

cytotoxic (killer T cells)

All lymph flows in a one-way system toward the ________.

heart

What happens to the fluid filtered from blood capillaries?

It becomes interstitial fluid, enters lymphatic vessels, and is returned to the bloodstream.

The adaptive (specific) defense system

issues an attack specific to particular foreign substances

Bacteria and tumor cells are removed from lymph by ________.

lymph nodes