1. An individual is suffering from a tumor located on an unidentified endocrine gland (gland X) in his abdominal cavity. He undergoes the removal of that particular gland. A few months later after his operation, his blood sodium level and his arterial pressure are very low. He is in risk of dying. Name the gland X and explain how you know. Indicate what can be done to prevent death? 

The gland X in this scenario is the adrenal gland, specifically the adrenal cortex. This can be deduced based on the symptoms of low blood sodium levels and low arterial pressure, which are characteristic of adrenal insufficiency or Addison's disease. The adrenal cortex is responsible for producing hormones such as cortisol and aldosterone, which help regulate blood pressure and electrolyte balance in the body.

To prevent death in this situation, the individual would need hormone replacement therapy to replace the missing cortisol and aldosterone that are no longer being produced by the removed adrenal gland. This can help to stabilize blood pressure and electrolyte levels and prevent a life-threatening crisis. Close monitoring and adjustment of hormone replacement therapy may be necessary to ensure proper functioning of the body's systems.