The Nurse Assessing an 80-Year-Old Attributes the Slowed Knee Jerk

question 21

Multiple Choice

The nurse assessing an 80-year-old attributes the slowed knee jerk reflex with which age-related change?

• A)Diminished brain cells
• B)Degeneration of myelin sheath
• C)Weakened muscles
• D)Irritation of nerve roots

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Definitions:

Pigments

Substances that give color to tissues, cells, and materials by absorbing certain wavelengths of light and reflecting others.

Extracellular

Located or occurring outside a cell or cells, often referring to substances or fluids in the spaces between cells.

Signaling Molecules

Chemicals that are involved in transmitting information between cells, allowing for processes such as growth, immune response, and neurotransmission.

Hormones

Chemical substances produced in the body that regulate and control the activity of certain cells or organs.