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प्रश्न
What are the general properties of hormones?
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उत्तर
General properties of hormones:
- Hormones are secreted by the endocrine glands.
- Hormones are specific in function.
- Hormonal actions are long lasting.
- Hormones are required in very minute quantities.
- They are secreted independent of one another.
- They act as chemical co-ordinators or chemical messengers.
- They are proteinaceous or steroid in nature..
- They are secreted in response to specific stimuli.
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संबंधित प्रश्न
Define the following:
Hormone
Define Endocrine gland
Give an example of a blood pressure lowering hormone.
Give an example of androgens.
Given below is a table consisting of a set of items belonging to a common category. Complete the table by filling in the category and the odd one in the blanks
| Set | Category | Odd one |
| Adrenaline, Penicillin, Insulin, Thyroxin | __________ | __________ |
| Vasopressin, growth hormone, TSH, ACTH, FSH | __________ | __________ |
Complete the table given below by filling in the blanks numbered 1 to 8.
| Gland | Hormone Secreted | Effect on Body |
| 1 | 2 | Regulates basal metabolism |
| Pancreas (β-cells) | 3 | 4 |
| 5 | 6 | Increases heart beat |
| 7 | Thyroid stimulating hormone | 8 |
Given alongside are the diagrammatic sketches of some endocrine glands. Observe the figures and answer the following questions:
(i) Label the parts numbered 1 to 5.
(ii) Name the hormones secreted by (2) and (5).
(iii) Which chemicals in our body are greatly affected by hormones?
(iv) What is the chemical nature of hormones?
(v) Name the elements related to the functioning of hormones secreted by the structure (2) and (5).
State the Function
Oestradiol
Which statement is not for a hormone?
Which endocrine gland is present in males but not in females?
