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प्रश्न
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.
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उत्तर
- A represents the endocrine system. The endocrine system is composed of glands.
- C represents hormones. Hormones are the chemical messengers of the body and they travel slowly through the bloodstream.
- D represents endocrine glands that are made up of tissues. Hypothalamus, thyroid, thymus, pancreas and adrenal glands are some of the endocrine glands present in the human body.
- B represents the nervous system. It comprises the brain, spinal cord and nerves.
- E represents nerve fibres. They transmit messages very quickly in the form of electrical impulses.
- The nervous system (B) controls the working of the endocrine system (A).
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संबंधित प्रश्न
Why is the use of iodised salt advisable?
Why are some patients of diabetes treated by giving injections of insulin?
Which halogen element is necessary for the making of thyroxine hormone by the thyroid gland?
What part does the diet play in helping us to have a healthy thyroid gland?
Which one term of the following includes the other three?
thyroid, ductless gland, thymus, pituitary, ovary
Why do you need iodine in your diet?
What is the function of insulin hormone? What type of patients are given insulin injections?
State the functions of Thyroxine hormones.
State the functions of Growth hormone.
Write the names of all the major endocrine glands present in the human body. Which of these glands also function as exocrine glands?
Name the gland which controls the secretion of hormones from the pituitary.
One of the following is an incorrect statement about insulin. This is:
Which of the following hormone prepares our body for action in emergency situations?
(a) testosterone
(b) growth hormone
(c) adrenaline
(d) insulin
The hormone which is associated with male puberty is called :
(a) oestrogen
(b) adrenaline
(c) testosterone
(d) progesterone
A doctor advised a person to take injection of insulin because :
(a) his blood pressure was high
(b) his heart beat was high
(c) his blood sugar was high
(d) his thyroxine level in blood was high
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
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?
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.
