Disorders of pituitary function, Biology

Assignment Help:

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.


Related Discussions:- Disorders of pituitary function

Cell, compare and contrast plant cell and animal cell with labeling diagram...

compare and contrast plant cell and animal cell with labeling diagrams

What is an etiological agent of disease, What is an etiological agent of di...

What is an etiological agent of disease? An etiological agent of disease is the agent that causes the disease. It might be a living being, substance or environmental fact.

Explain the basic concept of proteins, Explain the Basic Concept of Protein...

Explain the Basic Concept of Proteins? Proteins, as we already knows by now are products of amino acids. Each molecule of protein is composed of many molecules of amino acids j

What does radial symmetry mean, What does radial symmetry mean? What is the...

What does radial symmetry mean? What is the type of symmetry found in chordates? Which are other phyla of the animal kingdom that present species with radial symmetry? Radial

Define the role of vitamin a in immune response, Define the Role of Vitamin...

Define the Role of Vitamin A in immune response? Vitamins A is essential to normal immune function and- regulation. As discussed above, during vitamin A deficiency the goblet c

What are analogies for a nucleolus, What are analogies for a nucleolus? ...

What are analogies for a nucleolus? If the nucleolus is the president of a factory then the nucleolus is the manager

How is the extracorporeal digestion, Q. How is the extracorporeal digestion...

Q. How is the extracorporeal digestion associated to predation in arachnids? Arachnids can inoculate poison to kill or paralyze their preys using structures called chelicerae.

Flies are expected to have vestigial wings and ebony bodies, In the fruit f...

In the fruit fly Drosophila, a rudimentary wing called "vestigial" and dark body color called "ebony" are inherited at independent loci and are recessive to their dominant wild-typ

Define method for radiographic evaluation of the outcome, Method for Radiog...

Method for Radiographic evaluation of the outcome or RCT Ørstavik and associates suggest the use of the periapical index (PAI) for radiographic evaluation of the outcome of roo

Explain the vertical implant position, Vertical Implant Position: The i...

Vertical Implant Position: The implant can be submerged in the bone up till the level, where it is surface treated or further embedded till its shoulder, depending upon the sit

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd