Nasal endotracheal tube is designed to conveniently position the anesthesia circuit out of the surgical field for oral and maxillofacial procedures.

Neurological hammer is used for testing reflexes and measuring nerve sensitivity. It features dual rubber heads for reflex testing and includes a removable needle and brush.

Non-invasive, tissue oximeter is a device allowing the measurement of oxygenated and de-oxygenated hemoglobin concentrations in tissue. It works by emitting near infrared light into tissue at known distances from a collector. The collector light is measured and processed, and the absorption and scattering coefficients of the medium are determined. Once the absorption and scattering are determined, the assumption that hemoglobin is the only significant absorber is applied and the oxygenated and de-oxygenated hemoglobin concentrations are calculated.

Naso-pharyngo-laryngoscope is an endoscope that is used to visualize the upper airways and the pharynx.

Natural Face Masks are used in health and beauty spas to cleanse, detoxify and tone the skin giving a natural & healthy glow.

Natural Progesterone is produced by a woman's ovary in the normal monthly menstrual cycle. The natural progesterone is absorbed into the blood stream as the body needs it. Natural progesterone is very useful to balance excess estrogen.

Nicotinic Acetylcholine Receptors are ionotropic receptors that form ligand gated ion channels in cells plasma membranes. They include gamma-amino-butiric-acid, glycine and 5-hydroxytryptamine receptors.

Non-Enzymatic Detergents are utilized in automated washers. They are either a neutral or alkaline pH.

Neutral Connected Impedance Systems with impedance is placed between the neutral point of a transformer or generator winding & earth, are used to limit earth fault currents.

Non-Coherent Light Source is used for dermatological applications of photodynarnic therapy. Non-coherent light source eliminates both the high acquisition and operational costs of lasers while delivering the identical light activation required for approved drug protocols. Non-coherent light sources are a course explaining basic physical principles of non-coherent and coherent light emission.

Non-depolarising muscle relaxants are drugs that interrupt transmission at the skeletal neuromuscular junction without causing depolarization of the motor end plate. They prevent acetylcholine from triggering muscle contraction and are used as muscle relaxants during electroshock treatments, in convulsive states, and as anesthesia adjuvants.

Acne is caused from imbalances and impurities within the body. Antioxidants are generally used to treat natural acne, which can help to eliminate the free radicals that are dangerous to skin and promote infections. It also fights inflammation, to reduce redness. And it works to heal damaged skin, naturally.

Nonnarcotic analgesics are the most common pain relief medications used to treat osteoarthritis. These are usually effective for people who have mild-to-moderate pain. There are two types of nonnarcotic analgesics: acetaminophen, such as tylenol, and a new medication, tramadol, such as ultram. It works by blocking pain centers in the brain. They also increase ability to withstand pain by increasing pain threshold.

Non-porous cloth athletic tape is designed specifically for athletic applications. This non-porous cloth athletic tape provides affordable support in sporting activities. It is ideal for a wide variety of medical uses.

Natural lip balm is a substance topically applied to the lips of the mouth to relieve chapped or dry lips, angular cheilitis or stomatitis, and cold sores. The primary purpose of lip balm is to provide an occlusive layer on the lip surface to seal moisture in lips and protect them from external exposure.