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free fatty acids

The basic building blocks of many lipids.

frenulum

The elastic band of tissue under the head ot the penis that connects to the foreskin.

Friedreich's ataxia

An inherited disease that causes progressive damage to the nervous system.

fronto-temporal dementia

A rare form of dementia where memory is preserved, but personality and behaviour alter dramatically.

FSH

An abbreviation for follicle-stimulating hormone, a hormone produced by the pituitary gland.

fundus

The appearance of the retina when viewed through an opthalmoscope.

flank

The area of the body between the lowest rib and the hip.

femur

The thigh bone.