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प्रश्न
How do hormones reach the organs they control?
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उत्तर
Hormones reach the target organ through the blood and act on it.
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संबंधित प्रश्न
Name one hormone secreted by the pituitary gland
Which gland secretes the growth hormone?
Which one term of the following includes the other three?
adrenalin, insulin, hormone, thyroxine, estrogen
Write the functions of testosterone and oestrogen hormones.
Write the names of five endocrine glands found in the human body. Name the hormones secreted by each gland.
One of the following is an incorrect statement about insulin. This is:
The underactive endocrine gland which causes goitre is :
(a) pancreas
(b) thyroid
(c) adrenal
(d) pituitary
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 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.
Which is the target organ of both adrenaline and insulin?
(a) heart
(b) kidney
(c) liver
(d) pancreas
A and B are two pairs of glands that are present in the human endocrine system. The pair A is found only in females, whereas B is present only in males. Glands A make and secrete two hormones C and D, whereas glands B make and secrete only one hormone E. In addition to hormones, Glands A make gametes F, whereas glands B make gametes G.
(a) What are the glands A?
(b) What are the hormones C and D?
(c) What are the glands B? Name the hormone E.
(d) What are the gametes F and G?
(e) Which event in the life of males and females is associated with the secretion of the hormones C, D and E?
Which hormone regulates the ionic balance in the body?
Assertion: On attaining puberty, breast size increases and reproductive organs develop in females.
Reason: Ovaries release the hormone progesterone in females.
How does chemical coordination take place in animals?
Write any three responses which enable the animal body to deal with a scary situation.
We are advised to take iodised salt in our diet by doctors. Justify its importance in our bodies.
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.
