NAHP NRCMA Exam With Confidence Using Practice Dumps

Capillaries are the smallest blood vessels in the human body, typically measuring between 5 to 10 micrometers in diameter. They form a network between the arterioles and venules and are the site of the exchange of oxygen, nutrients, and waste products between the blood and tissues. This extensive network ensures that every cell in the body is in close proximity to a capillary, facilitating efficient physiological exchange processes.

References:

Gray's Anatomy

Clinical Hematology and Fundamentals of Hemostasis

When you are asked to take a cervical x-ray, you would take film of the neck region. Cervical x-rays are used to examine the cervical vertebrae, which are the seven vertebrae in the neck. These x-rays help diagnose fractures, dislocations, and other conditions affecting the cervical spine.

References:

Radiologic Science for Technologists by Stewart C. Bushong

Essentials of Radiographic Physics and Imaging by James Johnston and Terri L. Fauber

A Z-tract injection is a technique used to administer medication intramuscularly to minimize leakage and irritation of the medication in the subcutaneous tissue. The Z-tract method involves pulling the skin and subcutaneous tissue to one side before inserting the needle into the muscle, injecting the medication, and then releasing the tissue after withdrawing the needle. This "zig-zag" path prevents the medication from leaking back along the needle track. The gluteal muscle, particularly the ventrogluteal or dorsogluteal sites, is commonly used for such injections due to its large muscle mass.