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On an educational trip to Uttaranchal, Ketki and her friends observe that many local people were having swollen necks. - Biology

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प्रश्न

On an educational trip to Uttaranchal, Ketki and her friends observe that many local people were having swollen necks. Please help Ketki and her friends to find out the solutions to the following questions.

How is it caused?

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उत्तर

It is caused due to the deficiency of iodine in the diet that results in hyperthyroidism and enlargement of the thyroid gland.

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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 22: Chemical Coordination and Integration - Exercises [पृष्ठ १२७]

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एनसीईआरटी एक्झांप्लर Biology [English] Class 11
अध्याय 22 Chemical Coordination and Integration
Exercises | Q 3. b. | पृष्ठ १२७

संबंधित प्रश्न

Given below is a table designed to give the names of the glands, the hormones produced, their chief functions, the effects of oversecretion and undersecretion in respect of thyroid, pituitary and pancreas. Fill up the blanks 1–13.

S.No. Source Gland cells Hormone produced Chief function Effect of oversecretion Effect of undersecretion 
1 (1) ______ Thyroxine (2) ______  (3) ______ (4) ______
2 Beta cells of Islets of Langerhans (5) ______  Promotes glucose utilisation by the body cells (6) ______ (7) ______ 
3 (8) ______ Growth hormone  (9) ______ (10) ______ Dwarfism 
4 (11) ______ Vasopressin  Increases reabsorption of water from kidney tubule (12) ______ (13) ______

Write brief statement explaining the following: People living in hilly region usually suffer from simple goitre.

Name the hormone produced by the following gland giving one function: Thyroid


 People living in hilly regions usually suffer from simple goitre. Explain.


Give the Technical Term: Name a condition caused due to hypo secretion of thyroxin in adults.


Fill in the Blanks:

A hormone which influences the ossification of bones is ______.


The mammalian thymus is mainly concerned with:


Hormone thyroxine, adrenaline, and nonadrenaline are formed from _____________.


Which two hormones are responsible for the regulation of calcium and phosphorus in the blood?


Exophthalmic goiter is due to the over secretion of thyroxine.


Why are thyroid hormones referred to as personality hormones?


Given diagram is ofT. S. of the Thyroid gland identifies labels 'X' and 'Y'.

 


Iodine is necessary for the synthesis of which of the following hormone?


The mineral element needed for the functioning of the Thyroid gland:


Under secretion of thyroxine in children cause


Oversecretion of thyroxin causes ______ goitre.


The condition showing swelling in face and hands and sluggishness due to hypothyroidism is called ______.


Write the exact location of the following glands:

Thyroid


Name the following:

Symptoms of cretinism.


Give reason.

Simple goitre can be prevented by using iodised salt in food.


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