Body systems

Nicotinamide adenine dinucleotide, a helper molecule in cell energy; in charting, often "no acute distress".

The form of NAD that carries electrons and energy from food to the cell's energy-making machinery.

The skin underneath a fingernail or toenail.

A nostril, one of the two openings of the nose; the plural is nares.

Having to do with the nose.

A thin plastic tube with two short prongs that sit in the nostrils to give oxygen.

The space inside the nose, behind the nostrils, through which air passes on its way to the throat.

The wall of cartilage and bone that divides the inside of the nose into right and left sides.

Removing air and fluid from the stomach through a nasogastric tube attached to suction.

The tube that carries tears from the lacrimal sac at the inner corner of the eye down into the nose.

The top part of the throat, behind the nose and above the soft palate.

Making the kidneys remove more sodium in the urine.

A hormone released by stretched heart muscle that makes the kidneys remove sodium and water and relaxes the blood vessels.

Feeling sick to the stomach together with throwing up.

The death of cells or tissue in a part of the body.

A serious illness, mainly of premature babies, in which part of the bowel becomes inflamed and its tissue begins to die.

A body control in which a change sets off a response that reverses it, bringing a value back toward its normal set point.

Relating to a newborn baby, in the first 28 days after birth.

Withdrawal in a newborn who was exposed before birth to opioids or other drugs the mother took.

A newborn baby in the first 28 days of life.

An abnormal new growth of tissue, a tumor, which may be benign or malignant.

Inflammation of the kidneys.

The forming of stones in the kidney.

A physician who specializes in the kidneys and their diseases.

The tiny filtering unit of the kidney, where blood is filtered and urine is made.

A kidney disorder in which damaged filters let large amounts of protein pass from the blood into the urine.

A cord-like bundle of fibers that carries signals between the brain or spinal cord and other parts of the body.

The brain, spinal cord and nerves, which together carry messages that control the body.

The hollow structure in an early embryo that develops into the brain and spinal cord.

A cancer that starts in immature nerve cells, most often in an adrenal gland, in young children.

The cells of the nervous system that support and protect the neurons; also called glia or glial cells.

Relating to the nervous system: the brain, spinal cord and nerves.

Having to do with both nerves and muscles, or with the place where a nerve meets a muscle.

The place where the end of a motor nerve meets a skeletal muscle fiber and passes it the signal to contract.

A nerve cell: a cell that carries electrical and chemical signals through the nervous system.

Damage to or disease of one or more nerves, most often the nerves of the hands and feet.

A chemical that a nerve cell releases to pass a signal to another nerve, muscle or gland cell.

Having to do with both the nerves and the blood vessels of a body part.

An assessment of blood flow, feeling and movement in a limb below an injury, cast, splint or surgery.

A lower than normal number of neutrophils, the white blood cells that fight bacterial infection first.

The most common type of white blood cell, which is first to reach and destroy bacteria at a site of infection.

A baby in the first 28 days of life.

Waking up at night to urinate, more than once or more than is usual for the person.

A small, firm, rounded lump of tissue that can be felt or seen, in or under the skin or in an organ.

A group of cancers that start in lymphocytes, a kind of white blood cell, other than Hodgkin lymphoma.

The microbes that normally live on the skin and in the mouth, nose, throat, bowel and vagina without causing disease; also called the normal microbiota.

The heart's normal rhythm, started by the sinoatrial (SA) node, regular and at 60 to 100 beats a minute in adults.

A normal body temperature; for surgical patients, a core temperature of at least 36°C (96.8°F).

Non-ST-elevation myocardial infarction: a heart attack that does not raise the ST segment on the ECG.

A large molecule, DNA or RNA, that carries genetic information in living cells.