Certified Medical Assistant NRCMA Book

Insulin is a hormone produced by the beta cells of the islets of Langerhans in the pancreas. Insulin plays a critical role in regulating blood glucose levels by facilitating the uptake of glucose into cells, particularly in muscle and adipose tissue. It also inhibits the production of glucose by the liver. When blood glucose levels rise after eating, insulin is released to help lower glucose levels back to a normal range. Insufficient insulin production or action leads to diabetes mellitus, characterized by hyperglycemia (high blood sugar).

One complete heart beat, combining the contraction (systole) and relaxation (diastole) phases, is known as the cardiac cycle. The cardiac cycle consists of two main phases: systole, where the heart muscle contracts to pump blood out of the chambers, and diastole, where the heart muscle relaxes to allow the chambers to fill with blood. This sequence ensures that oxygenated blood is circulated throughout the body and deoxygenated blood is sent to the lungs for oxygenation.

Metastasis refers to the growth of cancer cells from one tissue to another. This process involves the spread of cancer cells through the bloodstream or lymphatic system to distant sites in the body, forming new tumors. Metastasis is a hallmark of advanced cancer and significantly impacts prognosis and treatment strategies.

References:

The Biology of Cancer by Robert A. Weinberg

Cancer: Principles & Practice of Oncology by Vincent T. DeVita, Jr., Theodore S. Lawrence, and Steven A. Rosenberg

A medical assistant is permitted to administer injections only when they have explicit orders from a physician or a nurse who has the authority to delegate this task. This ensures that the medical assistant is acting within their scope of practice and is administering the correct medication and dosage as prescribed. This protocol helps to maintain patient safety and adhere to legal and professional standards.Reference:Nationally Registered Certified Medical Assistant study materials, clinical guidelines.