NRCMA Exam Dumps - NAHP Certified Medical Assistant Questions and Answers

Tissues are composed of cells. A tissue is a group of similar cells that perform a specific function. There are four primary types of tissues in the human body: epithelial, connective, muscle, and nervous tissues. Each type of tissue has a distinct structure and function that contributes to the overall physiology of the body.

References:

Junqueira's Basic Histology: Text and Atlas by Anthony L. Mescher

Human Anatomy & Physiology by Elaine N. Marieb and Katja Hoehn

Basophils are a type of white blood cell that can be identified under a microscope by their large blue to purple staining granules. These granules contain histamine and heparin, which play a role in inflammatory responses and allergic reactions. Basophils are involved in immune system responses and can be recognized during a differential white blood cell count due to their distinctive staining properties and granule appearance.

References:

Clinical Hematology and Fundamentals of Hemostasis

Wintrobe's Clinical Hematology

The abbreviation for every two hours is Q.2h. This medical abbreviation is derived from Latin "quaque 2 hora," meaning "every two hours." It is commonly used in medical prescriptions and instructions to indicate the frequency of medication administration or other recurring treatments.

References:

Mosby's Medical Dictionary, 10th Edition

Thebrainstemis the subdivision of the brain that consists of the medulla, pons, and midbrain. It is located between the spinal cord and the cerebrum and plays a crucial role in regulating vital life functions such as heart rate, breathing, and sleep cycles. The brainstem acts as a conduit for all the information passing between the brain and the rest of the body.

Ahemacytometeris a device used in manual microscopic methods to count cells. It consists of a thick glass microscope slide with a grid etched into it. This grid allows for the counting of cells in a defined volume of fluid, making it possible to calculate the concentration of cells in a sample. The other options are not valid terms:

Hyamestometer: Not a recognized term.

Ccntraomctcr: Typographical error, not a valid term.

Hcmacountcr: Typographical error, not a valid term.

Aminortypically cannot legally act as an agent for another patient, including their younger siblings, because they are not considered legally competent to make medical decisions. A parent or a legal guardian can act as an agent for a child or a ward, as they have the legal authority to make healthcare decisions on their behalf.

Red blood cells (RBCs), also known as erythrocytes, are specialized cells in the blood responsible for carrying oxygen from the lungs to the body's tissues and returning carbon dioxide from the tissues to the lungs. RBCs contain hemoglobin, a protein that binds to oxygen molecules. Hemoglobin is composed of four subunits, each containing an iron ion that can bind one molecule of oxygen. This binding and release of oxygen are critical for cellular respiration, which provides energy for the body's metabolic processes. The unique biconcave shape of RBCs increases their surface area for efficient gas exchange and allows them to navigate through the narrow capillaries.

Glaucomais a condition characterized by increased intraocular pressure, which can damage the optic nerve and result in vision loss or blindness if not treated. The increased pressure is usually due to a buildup of aqueous humor in the eye, either from overproduction or blocked drainage channels.Reference:Nationally Registered Certified Medical Assistant study materials, ophthalmology textbooks.

The abbreviation forimmediatelyisSTAT. This term is used in medical contexts to indicate that an action is to be taken immediately, derived from the Latin word "statim."

References:

Mosby's Medical Dictionary (10th ed.). (2017). Elsevier.

Stedman's Medical Abbreviations, Acronyms & Symbols (5th ed.). (2013). Lippincott Williams & Wilkins.

Leukocytes, or white blood cells (WBCs), are crucial components of the immune system, protecting the body against infections and foreign invaders. There are several types of leukocytes, including neutrophils, lymphocytes, monocytes, eosinophils, and basophils, each with specific functions in the immune response. Neutrophils, for example, are the first responders to bacterial infections, while lymphocytes (such as T cells and B cells) are involved in adaptive immunity. Thrombocytes (platelets) are involved in blood clotting, erythrocytes (red blood cells) carry oxygen, and osteocytes are bone cells.