Parathyroid disorders, Biology

Assignment Help:

PARATHYROID DISORDERS -

(i) Hypoparathyroidism (deficiency of PTH). It causes the lowering of blood calcium level. This increases the excitability of nerves and muscles, causing cramps and convulsions. Sustained contractions of the muscles of larynx, face, hands and feet are produced. This disorder is called parathyroid tetany or hypocalcaemic tetany.

(ii) Hyperparathyroidism (excess of PTH). Excess of PTH draws more calcium from the bones.

  • It causes demineralisation, resulting in softing and bending of the bones. Some of the bone substance is replaced by cavities that are filled with fibrous tissues.
  • Osteoporosis is common in women who have reached menopause (cessation of menstruation). An excess of parathormone also causes calcium to be deposited in the kidneys. Analysis of the content of kidney stones sometimes suggests the presence of a parathyroid tumour.

Related Discussions:- Parathyroid disorders

Which are the plant tissues that form the plant roots, Which are the plant ...

Which are the plant tissues that form the plant roots? The roots have a central portion known as medulla made of vascular tissue (inner xylem and outer phloem). The medulla is

Describe about the secondary prevention - food allergy, Describe about the ...

Describe about the Secondary Prevention - Food Allergy? Secondary allergic preventive measures will focus on: Initiating prospective surveillance of infants, young child

What are pentoses, Pentoses are carbohydrates form of five carbons. Deoxyri...

Pentoses are carbohydrates form of five carbons. Deoxyribose is the pentose that constitutes DNA nucleotides and ribose is the pentose that is part of RNA nucleotides

Difference between plant systematic and taxonomy, Q. Difference between pla...

Q. Difference between plant systematic and taxonomy? Before coming to principles of taxonomy let us discuss the difference between taxonomy and systematic. Systematic is the sc

Applied biology, what are the branches of applied biology?

what are the branches of applied biology?

Sensitive/critical periods: windows of enhanced plasticity, There are speci...

There are specific sensitive/critical periods in development during which acquisition of certain skills is substantially easier than at other times. In the animal domain there are

Seating the abutment, Q. Show the Seating the abutment? The clinician w...

Q. Show the Seating the abutment? The clinician will need to ensure that the abutment is completely seated.A radiograph may be required to confirm complete seating. Abutments u

List the types of gellan gum, List the types of Gellan gum.   The three...

List the types of Gellan gum.   The three types of gellan gums are: High acetyl gellan (partially deacetylated) Low acetyl gellan (highly deacetylated) High cl

Determine the membrane voltage of a sa node cell, Consider a time when the ...

Consider a time when the membrane voltage of a SA node cell in the heart is at its minimum value (near -80 mv).  At this time, A. all the voltage-gated calcium channels will be

Deficiency diseases-vitamin- d deficiency, Vitamin- D deficiency Anima...

Vitamin- D deficiency Animals obtain vitamin D either through the diet or when skin is exposed to solar radiation. The deficiency of vitamin D is associated with reduced absor

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