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प्रश्न
State properties of hormones.
Enlist any two properties of hormones.
उत्तर
- They act as chemical messengers and are effective in very low concentration.
- Hormones can function as regulators that inhibit or stimulate or modify specific processess.
- Some hormones interact with receptors present on plasma membrane of target cells where as some enter the nucleus to interact with genes.
- Hypersecretion or Hyposecretion of hormones leads to various disorders.
- These are metabolised after their function. Thus cannot be reused.
- Hormone secretion is regulated by positive or negative feedback mechanism.
Notes
Students should refer to the answer according to their questions.
APPEARS IN
संबंधित प्रश्न
Put a tick mark (✓) against the correct alternative in the following statement:
The emergency hormone to face the danger or to fight is secreted by:
Why is pituitary gland is called “master gland”?
Fill in the blank:
Blood pressure is controlled by the endorine gland called __________.
Name the following:
Master gland in human body.
Describe two characteristic features of hormones.
Given below is an outline of the human body. Draw and label on the diagram.
- the gland that secretes insulin.
- the gland that produce adrenaline.
Susan’s father feels very tired and frequently urinates. After clinical diagnosis, he was advised to take an injection daily to maintain his blood glucose level. What would be the possible cause for this? Suggest preventive measures.
Match the terms of Column (A) with those of Column (B)
| Column (A) | Column (B) |
| (a) Olfactory receptors | (i) Tongue |
| (b) Thermo receptors (temperature receptors) | (ii) Eye |
| (c) Gustatoreceptors | (iii) Nose |
| (d) Photoreceptors | (iv) Skin |
Mention one function for each of these hormones :
- Thyroxin
- Insulin
- Adrenaline
- Growth hormone
- Testosterone
What are hormones?
