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

Haploid production, Haploid Production The higher plants are normally ...

Haploid Production The higher plants are normally diploid, with two sets of chromosomes in their somatic cells. Their haploids (with one set of chromosomes) arise in nature by

Drug effects on food intake - cause sore or painful mouth, Define Drug effe...

Define Drug effects on food intake - Cause sore or painful Mouth? This is a common side effect of chemotherapy and can significantly affect food intake. Antineoplastic drugs, u

What is rationale for menu planning, What is Rationale for Menu Planning? ...

What is Rationale for Menu Planning? 'Menu', as we all know, is nothing but a list of dishes planned for preparation, and forms the very core of all activities in the food serv

Endocrine interactions, Endocrine Interactions At the beginning of men...

Endocrine Interactions At the beginning of menstruation the inhibitory influence of the corpus luteum on the pituitary is removed and FSH is secreted in increasing amounts. Th

Potassium, Potassium, Calcium, Iron and Magnesium - Microorganism? Thes...

Potassium, Calcium, Iron and Magnesium - Microorganism? These are supplied by inorganic salts and exist in the cell as cations. These perform various functions in the cell like

Planning and implementing nursing care-nephrotic syndrome, Planning of Nurs...

Planning of Nursing Care   Promote nonnal urinary pattern or releive  excess  fluid  Administer medication  as prescribed  Protect the children from secondary  infecti

How many chromosomes does a human normal haploid cell have, Q. How many chr...

Q. How many chromosomes does a human normal diploid cell have? How many chromosomes does a human normal haploid cell have? How many are the sex chromosomes within each of them?

Amount of intracellular chloride ions in neuron a, Amount of intracellular ...

Amount of intracellular chloride ions in neuron A Neuron A is a healthy neuron with all the usual ion channels.  When at rest with a membrane voltage of R millivolts, neuron A

Does the trend of the change in shape of the graph, Does the trend of the c...

Does the trend of the change in shape of the graph as temperature increases differ when a different gas is examined?

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