Match Each Term with Its Definition

question 61

Multiple Choice

Match each term with its definition.
-notochord

• A)undifferentiated muscle cells
• B)pigmented layer of cytoplasm opposite from point of entry of sperm
• C)rounded layer of cells at the surface of yolk in birds
• D)solid rod of tissue that is involved in neurulation
• E)fingerlike extensions into the endometrium
• F)clear fibrous protein
• G)programmed cell death
• H)event when a group of cells influences a nearby group of cells

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Definitions:

Innate Immunity

The first line of defense in the immune system, consisting of physical, chemical, and cellular defenses against pathogens that are present from birth.

Plasma Cell

Cell derived from B cells; produces antibodies.

Antibodies

Proteins made by the immune system that are responsible for identifying and deactivating foreign entities such as viruses and bacteria.

Memory B Cell

A type of B cell that remains after an initial immune response and can quickly respond to subsequent exposures to the same antigen.