Why Do Some Cells Fail to Respond to the Hormonal

question 20

Multiple Choice

Why do some cells fail to respond to the hormonal stimulation, no matter the concentration of the hormone at those cells' membrane?

• A) chemical signals are only delivered to certain tissues
• B) most likely the concentration of hormone is too high
• C) these cells might lack the necessary receptors
• D) these cells might not have appropriate ligands

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Definitions:

Brachytherapy

A type of radiation therapy that places radioactive isotopes in or near the tumor.

Radiation Therapy

A treatment method using high doses of radiation to kill cancer cells and shrink tumors, with minimal exposure to surrounding healthy tissues.

Radioactive Implants

Small pieces of radioactive material placed within the body as part of cancer treatment to target and destroy cancerous cells.

Teletherapy

Radiation therapy administered by a machine that is positioned at some distance from the patient.