Secondary Immune Responses Upon a Second Exposure to a Pathogen

question 98

Multiple Choice

Secondary immune responses upon a second exposure to a pathogen are due to the activation of

• A) memory cells.
• B) macrophages.
• C) stem cells.
• D) B cells.
• E) T cells.

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Definitions:

Erythrocytes

Red blood cells that carry oxygen from the lungs to the body tissues and carbon dioxide as a waste product away from tissues back to the lungs.

High Lipid

A condition characterized by an elevated level of lipids in the blood, which can increase the risk of cardiovascular diseases.

Chyle

A milky bodily fluid consisting of lymph and emulsified fats, absorbed from the intestines during digestion.

Lymphatic Vessels

Tubes that carry lymph, a clear fluid that helps the body rid itself of toxins, waste, and other unwanted materials.