The Chemical Control Of The Brain

The chemical control of the brain Dr.Francois Kouya

Function of the hypothalamus ,[object Object],[object Object]

The secretory hypothalamus ,[object Object],[object Object],[object Object]

Hormones ,[object Object],[object Object],[object Object]

Endocrine and exocrine hormones ,[object Object],[object Object]

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Hypothalamus and the pituitary gland

Anterior Pituitary Hormones Parvocellular Neurosecretory cells ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Parvocellular neurosecretory cells

Magnocellular neurosecretory cells Oxytocin Affects uterine contractions in pregnancy and birth and subsequent release of breast milk Vasopressin (ADH) Controls the blood fluid and mineral levels in the body by affecting water retention by the kidneys. This hormone is also known as arginine vasopressin (AVP)

Hormones under control of piututary ,[object Object],[object Object],[object Object],[object Object],[object Object]

Cortisol:Adrenals ,[object Object],[object Object],[object Object],[object Object]

Thyroxine: Thyroid ,[object Object],[object Object],[object Object],[object Object]

Estrogen: Ovaries ,[object Object],[object Object]

Progesterone: Ovaries ,[object Object],[object Object]

Testosterone:Testes ,[object Object],[object Object],[object Object]

Stress response : The hypothalamus pituitary and adrenals axis) External stress triggers CRH secretion by the hypothalamus. In turn, this signals to the pituitary to release ACTH which stimulates the adrenal gland to release cortisol. Cortisol binds to the glucocorticoid receptor ® in the pituitary and has a negative feedback effect on the release of CRH and ACTH. In addition, the cortisol-receptor complex has a positive feedback effect, promoting further receptor synthesis.

Effects of psychoactive drugs LSD = Lysergic acid diethylamide Psychoactive drugs are chemical substances that affect the brain functioning, causing changes in behavior, mood and consciousness

Stimulants ,[object Object],[object Object],[object Object],[object Object]

Psychedelics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Psychoactive drugs use by school-age adolescents, Brazil

The Chemical Control Of The Brain

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