Types of hormones, Biology

Types of hormones -

(i) Releasing and Inhibitory hormones - Hormones of hypothalamus and kidney (renin) which control secretion of trophic hormones.

(ii) Trophic hormones - Hormones controlling activity of other endocrine glands and growth, e.g. anterior pituitary hormones like thyrotropin for thyroid.

(iii) Hormones connected with Reproduction. FSH, LH (ICSH), oxytocin are sex hormones. (iv) Hormones connected with Growth and Development. GH (somtotrophin), thyroxine.

(v) Hormones of Digestive system. Gastrin, secretin, enterocrinin etc.

(vi) Hormones connected with Metabolism. Insulin glucagon, calcitonin, corticoids

(vii) Hormone Neurotransmitters. Hormones which also function as neurotransmitters, e.g., noradrenaline (= nore- pinephrine), adrenaline (=epinephrine).

  • Female contraceptive pills. Generally contain oestrogen and progestrone.
  • Gravidex test. Test for pregnancy, e.g. hCG test.
  • Largest Endocrine gland. Thyroid.
  • Largest endocrine organ system - Gut.
  • Temporary Endocrine gland. Corpus luteum, placenta.
  • Receding Endocrine Gland. Thymus, shrinks after puberty.
  • Smallest Endocrine Gland. Pituitary (0.5 - 1.0 gm).
  • Triple F Glands. Emergency glands or adrenals for flight, fight and fright.
  • Four S Glands. Adrenal glands as they manage salt, sugar, sex and stress reactions.
  • Gonadotrophins, FSH and LH/ICSH. Some workers also include hCG and prolactin under gonadotrophins.
  • Brain Sand. Granular bodies of calcium, magnesium and amoonium phosphate present in pineal body and piamater (on calcification).
  • Infantilism. Persistence or recurrence of a childish condition or behaviour pattern in an adult due to abnormal physical sexual or psychological immaturity.
  • Simmond's Disease (= Panhypopituitarism). The disease makes the patient thin, prematurely senile, with unduly wrinkled face, sparse gray hair, low blood pressure, slow pulse, weak bones, little manifestation of secondary sexual characters, loss of libido, etc. due to absence of or damage to pituitary gland, especially adenohypophysis.
  • Dormitory Effect. Synchronisation of menstrual cycles of women living together, probably due to pheromones.
Posted Date: 10/2/2012 6:02:41 AM | Location : United States







Related Discussions:- Types of hormones, Assignment Help, Ask Question on Types of hormones, Get Answer, Expert's Help, Types of hormones Discussions

Write discussion on Types of hormones
Your posts are moderated
Related Questions
RIBS- Curved or stretched 'S' shaped bones. 12 pairs, form thoracic basket, attached by head part to vertebral column and by tail part to sternum. 7 pairs a

How different are gymnosperms from bryophytes and pteridophytes? Gymnosperms are not cryptogamic as bryophytes and pteridophytes are. They are phanerogamic and so they form flo

S m o k in g of Meat Products The purpose of smoking meat is to develop a distinctive flavour, aroma and appearance. These attributes can also be achieved with liquid smok

Your task is to describe genetic algorithms, explain why genetic algorithms are useful in solving the problem you have been set and conduct an investigation into the optimum parame

(i)     Genetic  Bio- Diversity: All forms of life on earth contain genes. Genes are carrier of hereditary characteristic from one generation to another. " genetic diver

Classification of Nephrotic Syndrome In childhood, nephrotic syndrome can be divided into minimal lesion nephrofic syndrome and  significant lesion nephrotic syndrome dependin

Maedi/visna Maedi, a progressive pneumonia, and visna, a neurotropic disease, found in sheep and goats are caused by the Maedi/visna virus, belonging to the family Retroviridae

Andalusian chickens may be either black, white, or gray. The gene for black is not dominant over the gene for white, nor is the gene for white dominant over the gene for black. Whe

explain the role of cyclic photophosphorylation in photosynthesis

SUPERNUMERARY OR ACCESSORY CHROMOSOMES Wilson (1905) discovered them in Matapodium insect. Very small Chromosomes present in nucleus in addition to normal number of Chr