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प्रश्न
The gland A is attached to the wind pipe in the human body. The gland A makes and secretes a hormone B which controls the metabolism of carbohydrates, fats and proteins in the body. The non-metal element C is necessary for the formation of hormone B. The deficiency of C in the diet can cause a deficiency of hormone B in the body leading to a disease D in which the neck of a person appears to be swollen. People are advised to use salt E in cooking food so as to avoid disease D.
(a) Name (i) gland A, and (ii) hormone B.
(b) What is the element C?
(c) Name one type of food which can provide sufficient C in the diet of a person.
(d) Name (i) disease D, and (ii) salt E.
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उत्तर
- (i) A represents the thyroid gland. It is attached to the wind pipe in the human body.
- (ii) B represents thyroxine. It regulates the metabolism of carbohydrates, fats and proteins in the body.
- The non-metal element C is iodine. It is essential for the synthesis of thyroxine hormone by the thyroid gland.
- Sea foods like fish provide sufficient amount of iodine in the diet of a person.
- (i) D represents the disease called goitre. It is characterised by abnormal enlargement of the thyroid gland in the neck.
(ii) E represents iodised salt. It is advised to use iodine in cooking food in order to prevent goitre.
APPEARS IN
संबंधित प्रश्न
Name the hormones secreted by the given endocrine glands and specify one function.
Pituitary
Name the disease caused by the deficiency of insulin hormone in the body.
What substances are made by endocrine glands?
Name the hormones secreted by given endocrine glands :
Thyroid gland
Name the hormones secreted by given endocrine glands :
Parathyroid glands
Why is the use of iodised salt advisable?
State the functions of Thyroxine hormones.
State the functions of Adrenaline hormones.
In what ways are puberty and adolescence result of the activity of some glands in the human body?
Write the names of five endocrine glands found in the human body. Name the hormones secreted by each gland.
How do hormones reach the organs they control?
One of the following is an incorrect statement about insulin. This is:
One of the following statements is not true about thyroxine. This is :
(a) Thyroid gland requires iron to synthesise thyroxine
(b) It regulates carbohydrate, protein and fat metabolism
(c) Iodine is essential for the synthesis of thyroxine
(d) Thyroid gland can enlarge due to lack of thyroxine
The dramatic changes in body features associated with puberty are mainly because of the secretions of :
(a) estrogen from testes and testosterone from ovary
(b) estrogen from adrenal gland and testosterone from pituitary gland
(c) testosterone from testes and estrogen from ovary
(d) testosterone from thyroid gland and estrogen from pituitary gland
The use of iodised salt is recommended to prevent :
(a) diabetes
(b) gonorrhoea
(c) dysentery
(d) goitre
Which of the following are often called glands of emergency?
(a) thyroid
(b) pituitary
(c) adrenal
(d) pancreas
A and B are the two systems of control and coordination in the human body. The messages in system A are transmitted in the form of chemical substances C which travel comparatively slowly through the blood stream. The substances C are made in tissues D present in the head and trunk of human body. The messages in system b are transmitted very quickly in the form of electrical impulses through fibres E. The effect of messages transmitted by system b usually lasts for a much shorter time as compared to those transmitted by system A.
(a) Name the system A. What does system A consist of?
(b) Name the chemical substance C.
(c) What is tissue D? Name any five such tissues in the human body.
(d) Name the system B. What does system B consist of?
(e) Name the fibres E.
(f) State whether system A controls the working of system B or system B controls the working of system A.
The pancreas is made up of two parts A and B. The part A secretes insulin whereas part B secretes pancreatic juice.
(a) Which part is functioning as an endocrine gland? Why?
(b) What is insulin and what effect does it have in the body?
(c) Name the disease which can be treated by giving insulin injection.
(d) What does pancreatic juice contain? Where does pancreatic juice go?
(e) Name the life process in which pancreatic juice is made use of.
A doctor has advised Sameer to reduce sugar intake in his diet and do regular exercise after checking his blood test reports. Which disease do you think Sameer is suffering from? Name the hormone responsible for this disease and the organ producing the hormone.
