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प्रश्न
How does chemical coordination take place in animals?
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उत्तर
In animals, chemical coordination is coordinated by hormones. The organ system responsible for the synthesis and regulation of these hormones is known as the endocrine system. Hormones are secreted in very less amount by the endocrine glands. These glands being ductless, the secretions directly mix into the bloodstream. From there it moves to specific target organs where it shows its effects. For example, growth hormone is synthesized by the pituitary gland which mainly acts on the bones of a developing child and increases the height of the child.
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संबंधित प्रश्न
How does our body respond when adrenaline is secreted into the blood?
Why are some patients of diabetes treated by giving injections of insulin?
Name the hormones secreted by the given endocrine glands and specify one function.
Pancreas
What is the name of the system of glands which produces hormones?
Which gland secretes the growth hormone?
Name the disease caused by the deficiency of insulin hormone in the body.
Name the disease caused by the deficiency of thyroxine hormone in the body.
Name one gland which acts only as an exocrine gland.
Which one term of the following includes the other three?
adrenalin, insulin, hormone, thyroxine, estrogen
Fill in the following blanks with suitable words :
The two examples of effectors are .........and ...........
Name the hormones secreted by given endocrine glands :
Parathyroid glands
Name the hormones secreted by given endocrine glands :
Pancreas
How does chemical coordination take place in human beings?
State the functions of Adrenaline hormones.
Which hormone prepares the body for action?
Name the disease which occurs in adults due to the deficiency of iodine in the diet. What is the main symptom of this disease?
The use of iodised salt is recommended to prevent :
(a) diabetes
(b) gonorrhoea
(c) dysentery
(d) goitre
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.
A gland W is located just below the stomach in the human body. The gland W secretes a hormone X. The deficiency of hormone X in the body causes a disease Y in which the blood sugar level of a person rises too much. The person having high blood sugar is called Z.
(a) Name (i) gland W, and (ii) hormone X.
(b) What is the function of hormone X?
(c) Name (i) disease Y, and (ii) person Z.
(d) What advice would you like to give to a person who is suffering from disease Y due to faulty life-style?
