Which of the Following Would Be Considered an Abnormal Age-Related

question 20

Multiple Choice

Which of the following would be considered an abnormal age-related change in the peripheral blood?

• A) diminishing size of lymph nodes
• B) increased hemoglobin count
• C) decreased function of lymphocytes
• D) decline in cellular immunity

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Definitions:

Nematocyst

A specialized cell in the tentacles of a jellyfish or other cnidarians, containing a barbed or venomous coiled thread that can be projected in self-defense or to capture prey.

Ascaris

A genus of parasitic nematode worms which can cause the infection ascariasis in humans through ingestion of eggs from contaminated sources.

Roundworm

Invertebrates with nonsegmented cylindrical body covered by a cuticle that molts; some forms are free-living in water and soil, and many are parasitic.

Freshwater Hydra

A small, tentacled, aquatic organism found in freshwater, known for its extraordinary ability to regenerate.