Endocrine system overview.

The endocrine system consists of specialized structures that secrete hormones in to the blood stream to be transported to the organs they affect. The structures responsible for hormone production are glands, specific clustered cells of the gut and blood vessel walls and specialised nerve endings.

endocrine-system

Pineal gland.

pineal

Location: Between the cerebral hemispheres, attached to the third ventricle of the brain.

Hormones produced: Melatonin, serotonine.

Pathologies: Insomnia, seasonal affective disorder (SAD), bipolar disorder.

Hypothalamus.

hypothalamus

Location: Inferior to the thalamus, posterior to optic chiasm.

Hormones produced: Thyroid releasing hormone (TSH), coricotropin releasing hormone (CRH), gonadotropin releasing hormone (GnRH), growth hormone releasing hormone (GHRH), somatostatin, dopamine.

Pathologies: Hypopituitarism, deficiencies in pituitary hormones.

Pituitary gland.

pituitary gland

Location:  Middle of the base of the brain, inferior to the hypothalamus.

Hormones produced:
– Anterior lobe: Thyroid stimulating hormone (TSH), adrenocorticotropic hormone (ACTH), luteinising hormone (LH), follicle stimulating hormone (FSH), growth hormone (GH), prolactin (PRL).
– Posterior lobe: Vasopressin (VP)/ antidiuretic hormone (ADH), oxytocin. – Intermediate lobe: Melanocyte stimulating hormone.

Pathologies: Hormonal deficiencies: Rare but can be caused by necrosis of pituitary from lodged thrombus or space occupying lesions. TSH deficiency – hypothyroidism. ACTH deficiency – reduced cortisol. GH deficiency – retarded growth (children), osteoporosis, thin skin, muscle weakness. Patient looks older than chronological age. LH and FSH deficiency – failure to reach puberty (children).

Thyroid gland.

thyroid-gland-left-and-right-lateral-lobes-isthmus-and-aorta-and-trachea-anterior-view

Location: Anteriorly in the lower neck.

Hormones produced: Thyroxine (T4), triiothyronine (T3).

Pathologies:  Goitre, hyperthyroidism (Graves disease, post partum thyroiditis, pituitary tumour), hypothyroidism (Hashimotos disease).

Parathyroid glands.

parathyroid glands

Location: Posterior surface of thyroid gland.

Hormones produced: Parathyroid hormone (PTH).

Pathologies: Hyperparathyroidism, hypercalcemia, kidney stones, hypoparathyroidism, osteoporosis, paget disease.

Thymus gland.

thymus

Location: beneath the sternum at heart level.

Hormones produced: Thymic factor (TF), thymosin, thymic humeral factor (THF), thymopoietin.

Pathologies: Reduced immune function.

Adrenal glands.

adrenal-gland-293x300

Location: On top of each kidney (adrenal/suprarenal).

Hormones produced:
– Adrenal cortex: cortisol, aldosterone, androgens.
– Adrenal medulla: adrenaline, noradrenaline.

Pathologies: Cortex excess (Cushing syndrome), cortex failure (addison disease), congenital adrenal hyperplasia, primary hyperaldosteronism (conn’s syndrome), adrenal medulla excess.

Pancreas.

pancreas-internal-structure

Location: Epigastric region of the abdomen.

Hormones produced: Insulin, glucogon.

Pathologies: Diabetes mellitis.

Ovaries:

ovary

Location: Hypogastric (pubic) region of the abdomen.

Hormones produced: Oestrogens (oestradiol), progesterone.

Pathologies: Polycystic ovary syndrome, hyperandrogenism, teratoma, malignancy.

Testes:

teste

Location: within scrotal sack directly behind penis.

Hormones produced: Testosterone,  anti-Müllerian hormone, oestradiol.

Pathologies: Hypogonadism, epididymitis, testicular torsion, varicocele, hydrocele, testicular cancer.

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2 thoughts on “Endocrine system overview.

  1. Pingback: Can Chiropractic Help with Hormone Problems? | Dr. Robin's Corner

  2. Pingback: Chiropractic For Hormone Problems?! | healthy.BEing family wellness - Dr. Tijana

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