Glossary

Browse through glands, hormones and endocrine conditions.
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L

Luteinising hormone

Luteinising hormone is produced by the pituitary gland and is one of the main hormones that control the reproductive system.

Laboratory tests

Introduction to laboratory tests

labyrinthitis

an inflammation of a delicate part of the inner ear called the labyrinth. Symptoms include dizziness, vertigo and feeling sick.

laparoscopy

a type of keyhole surgery where a telescope camera is passed through the navel into the abdominal cavity. This allows doctors to directly visualise the pelvic area to look for any tissue damage or abnormalities.

lymph nodes

small bean-shaped glands throughout the body forming part of the lymphatic system, which carries lymph fluid, nutrients and waste material between the body tissues and the bloodstream.

lactation

breastfeeding; the process of producing milk for offspring.

lethargic

feeling tired and lacking energy; unwillingness to perform activities.

leukaemia

a severe type of cancer that starts in the bone marrow and causes a reduction in the number of white blood cells in the body.

ligaments

tough bands of connecting tissue that join two bones together.

laxative

a medication that causes emptying of the bowels.

lethargy

a feeling of tiredness and lack of energy.

Leptin

Leptin is a hormone secreted from fat cells that helps to regulate body weight. The name leptin is derived from the Greek word 'leptos' meaning thin. It is sometimes referred to as the 'Fat Controller'.

labour

the process through which a woman gives birth to a baby. It begins with the womb contracting to allow the cervix to open, the foetus then passes along the birth canal and is born through the vagina. The final stage of labour is delivering the placenta.

larynx

medical term for the voice box, which is found in the throat.

libido

a person’s sexual desire.

lipid

another word for fat.


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