Exam 12: Body Defenses

A(n) ____________________ is a disease-producing organism.

____________________ in an infected wound is a collection of phagocytic cells, dead tissue liquefied by enzymes released from the phagocytic cells, and bacteria.

Specific immune responses are selectively targeted against particular foreign material to which the body has previously been exposed.

Which antibody group is most common in human milk and tears?

The immune system functions entirely independently of the body's two major control systems: the nervous and endocrine systems.

Neutrophils are the first phagocytes to leave the blood and arrive at a site of bacterial invasion or tissue damage.

B lymphocytes

The T lymphocyte lineage undergoes maturational processing and differentiation in the ____________________.

____________________ is the process by which a substance separates from a solution.

Which pairing of item and function is most out of place?

MHC antigens are found only on the surface of leukocytes.

Thymosin is a hormone produced by the thyroid gland and it stimulates the formation of T cells.

T cells typically bind with MHC self-antigens only when they are in association with foreign antigen.

Phagocytes can destroy foreign microbes only after they have engulfed these invaders.

Match defense cell with the correct characteristic. a.keratinocytes b.melanocytes c.Langerhans cells d.Granstein cells -Produce a pigment responsible for varying shades of brown color in the skin

Neutrophils engulf foreign particles by

Which of the following does not have MHC proteins in its plasma membrane?

A pyrogen induces the development of ____________________.

Indicate whether the characteristic applies to active immunity or passive immunity by writing the appropriate letter in the blank using the following answer code. a.active immunity b.passive immunity -Antibodies produced by a source other than one's own body

Match defense cell with the correct characteristic. a.keratinocytes b.melanocytes c.Langerhans cells d.Granstein cells -Secrete a substance that absorbs harmful ultraviolet rays