Disorders of pituitary function, Biology

Disorders of Pituitary Function:

The disorders of pituitary function result  in following conditions. 

Hypopituitarism: Growth Hormone  (GH) Deficiency Hypopituitarism is primarily a disorder associated with deficient secretion of GH (somatropin).  

It may be caused by  a  variety of  conditions which may  include developmental defects, destructive lesions such as tumors, trauma, vascular abnormalities, or  surgery, certain hereditary  disorders, or  functional disorders such as anorexia nervosa  or  psychosocial dwarfism.  In more  than half  of children with hypopituitarism, no lesion is evident  and  the cause is unknown- idiopathic hypopituitarism or  idiopathic pituitary growth failure. The children with hypopituitarism may  be normal at  birth but  later during  infancy  there is deviation in growth from normal growth  rate. Treatment consists of  replacement of  growth hormone  and  in  cases where cause  is due  to organic lesion  then surgical  removal of  lesion is done.  

Pituitary Hyperfunction

If  the  excess of  Growth Hormone  (GH) occurs  prior  to closure  of  the epiphysieal shafts  it  results in proportional overgrowth of  long bones until the individual reaches  a  height of  8 feet or more. There  is  rapid  and  increased development of muscles and viscera along with vertical growth. Weight  is increased but  is usually  in  proportion  to height. Also there is proportional enlargement  of head  circumference which may result in delayed closure of  the fontanels. Children with  a  pituitary-secreting tumor may  also demonstrate signs of  increased intracranial pressure, especially headache. If hypersecretion of  GH occurs after epiphyseal closure, growth takes place in the transverse direction, producing  a condition known as acromegaly.

Posted Date: 10/26/2012 8:30:34 AM | Location : United States







Related Discussions:- Disorders of pituitary function, Assignment Help, Ask Question on Disorders of pituitary function, Get Answer, Expert's Help, Disorders of pituitary function Discussions

Write discussion on Disorders of pituitary function
Your posts are moderated
Related Questions
What is Bidirectional Superior Cavopulmonary Shunt-Bidirectional Glenn Shunt ? Hospital mortality is between 5 and 10 per cent. Early palliation is very good with arterial sat

Q. What are the male pronucleus and the female pronucleus? The female pronucleus is the proper haploid nucleus of the egg cell and Male pronucleus is the haploid nucleus of the

Define Simple, Compound, Derived Lipids? Simple lipids are fatty acid esters of glycerol, called triacyglycerols or triglycerides (for e.g. fats and oils) or higher alcohols (

Define drug effects on Carbohydrate metabolism? Carbohydrate metabolism: Hypoglycemic drugs such as insulin and sulphonylureas are prescribed because of their ability to increa

Explain what is Third Heart Sound S 3 ? S, is generated during the rapid filling pliase. It is a low frequency event. Mechanism of S, production: It is due to a sudden limita

What is Hyperhomocysteinaemia ? Homocysteine has been considered as a risk factor for Cardio-vascular diseases because of many epidemiological and observational studies showing

Mammalian Lungs - Respiration In this we will study mainly mammalian lungs as it is the best representative of a respiratory surface adapted for terrestrial respiration. For t

Puerperal Psychosis: Child birth can precipitate schizophrenia, depression and mania. Management:  it  depends on  the nature of the symptoms. Danger  to  self and othcrs (inc


Explain the Principles of Taxonomy? The goal of taxonomy is to develop a workable classification that reflects evolutionary relationships and provides identification and no