Thyroid gland. Gamma scan (scintigram) of a healthy human thyroid gland,seen in the profile of a man. The thyroid gland is a main endocrine gland situated at the base of the neck,and is divided into two joined lobes. A radioactive tracer substance shows areas of activity within the gland: green (low activity); red (high). The thyroid produces and stores hormones which control the basal metabolic rate of the body,influence growth and maturation,and regulate blood calcium levels. Gamma scanning involves introducing a radioactive tracer into the bloodstream,which is taken up by certain organs and detected as gamma rays by a gamma camera | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Pasieka, Alfred |
Taille de l’image : | 4694 px × 3803 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |