If a Tumor Metastasizes,this Means That It Has Moved to Another

question 62

Multiple Choice

If a tumor metastasizes,this means that it has moved to another part of the body.Doctors often look in lymph nodes near a tumor for signs of metastasis.Why might cancer cells be found in lymph nodes?

• A) because the tumor started in the lymph node
• B) because the lymphatic system collects fluids and cells from tissues
• C) because white blood cells are formed in lymph nodes in response to the tumor
• D) because the tumor is recognized as a foreign antigen and is being attacked
• E) because the tumor cells may have moved from the blood into the lymph with the plasma

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Definitions:

Tolerance

Decrease in response to a drug with the passage of time.

Decreased Response

A reduction in the body's reaction to a particular stimulus over time, often after repeated exposure.

Curare

A toxin derived from South American plants that acts as a neuromuscular blocking agent by inhibiting acetylcholine receptors at the neuromuscular junction, historically used as a paralyzing poison.

Acetylcholine

A neurotransmitter important for learning and memory, as well as muscle contraction, involved in many functions across the nervous system.