It is composed of number of vesicles or thyroid follicles lined with cuboidal epithelium abundantly supplied with blood and held together by connective tissue. These cells secrete a sticky fluid called the colloid of the thyroid compored of the glycoprotein, thyroglobulin.HOME HYPOPHYSIS - PITUITARY hypersecretion of Growth Hormone: gigantism in children and acromegaly in adults hyposecretion of Growth Hormone: pituitary dwarfism - if the condition occurs during childhood, slows long bone growth.
The disorder can be treated by an early administration of thyroid hormone. It is caused by deficiency of thyroid hormones in adults. It is more common in women than in men.Over time diabetics experience vascular and neural problems. Secondarily, poor circulation may lead to gangrene, blindness, kidney damage and impotence. Type II Diabetes - while occurring later in life, the conditions and problems that accompany Type I diabetes occur here as well TOP OF PAGE INSULIN ENDOCRINE HISTOLOGY PAGE NORMAL HORMONE SECRETIONS HOME Visit the.
Caused due to hyposecretion of insulin hormone by the p-cells of islets of. of insulin by p-cells of the islets of Langerhans in pancreas results in lowering of.V) It enhances some action of neurotransmitters : adrenaline and non adrenaline. The special cells called the C-cells secrete calcitonin. It regulates the concentration of calcium and phosphorus in the blood.
Ii) They promote growth of body tissues and development of mental faculties. iii) They stimulate tissue differentiation. Example: Metamorphosis in a frog. iv) Thyroxin also controls the working of kidneys. Its deficiency results in decreased urine output and vice versa.The thyroid gland secretes three hormones. Thyroxine or tetraiodothyroxine, triiodothyronine and calcitonin. Thyroxine and triiodothyronine are iodinated forms of the aminoacid tyrosine. They are stored in the colloid that fills the vesicles and are released to the blood when needed.
This leads to slow heart beat, lower blood pressure, decrease in body temperature, stunted growth, mental retardation, awkward body with pot belly, protruding tongue and pigeon chest and retarded sexual development.Improper secretion of the above thyroid hormones causes the following disorders. Hyposecretion (Hypothyroidism) Back to Top Deficiency of the secretion of the gland at birth produces this condition in infants. A cretin has markedly reduced metabolic rate and oxidation.
TOP OF PAGE ESTROGEN AND PROGESTERONE ENDOCRINE HISTOLOGY PAGE NORMAL HORMONE SECRETIONS HOME TESTIS You are not responsible for any effects of hypo or hyper secretion of testosterone. TOP OF PAGE ESTROGEN AND PROGESTERONE ENDOCRINE HISTOLOGY PAGE NORMAL HORMONE SECRETIONS HOME This page was last updated in August, 1997.Rising blood levels of aldosterone cause the kidney tubules to: A) reabsorb calcium. Hyposecretion of thyroxine in early childhood leads to: A) exophthalmos.
Ml PARATHYROID GLAND hyperparathyroidism: demineralization of bone resulting in possible bone deformity and fracture, and stones in the urinary tract hypoparathyroidism: decreased plasma calcium levels which can lead to severe muscle tetany TOP OF PAGE PTH ENDOCRINE HISTOLOGY PAGE NORMAL HORMONE SECRETIONS HOME Visit an information page on PARATHYROIDISM : m/peds/top/m PANCREAS hyperinsulinism: hypoglycemia.TOP OF PAGE THYMOSIN ENDOCRINE HISTOLOGY PAGE NORMAL HORMONE SECRETIONS HOME Further information about melatonin is available through a list of web sites offered by Aeiveos Sciences Group, a biotechnology research and education company dedicated to understanding the causes of aging at m/diet/melatonin/ OVARY You are not responsible for any effects of hypo or hyper.
Hing-Chung Lam. It is available at: m THYMUS Not responsible for any effects of hypo or hyper secretion of thymosin. TOP OF PAGE THYMOSIN ENDOCRINE HISTOLOGY PAGE NORMAL HORMONE SECRETIONS HOME PINEAL Not responsible for any effects of hypo or hyper secretion of melatonin.The gland that produces insulin and glucagon is indicated by. diagram. hypersecretion of growth hormone during childhood results in. gigantism.
It is caused due to over secretion of thyroid hormones due to enlargement of the thyroid. This increases metabolic rate and accelerates oxidation, thus resulting in quick consumption of food, leaving nothing for storage and causing excessive leanness.The thyroid gland secretes three hormones Thyroxine or tetraiodothyroxine, triiodothyronine. Its deficiency results in decreased urine output and vice versa.