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प्रश्न
Given below are two diagrams (one is correct, the other one is somewhat incorrect) showing the transport of a hormone from its source gland/cell to the target organ/cell.
What is the error?
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उत्तर
Hormone secreted by the endocrine gland is shown in the image A to be moving only in one direction i.e. towards the target organ. But actually the hormones poured into the blood stream may have one or more target sites at a time. The arrows shown are carried to all parts by the blood and their effect is produced only in one or more specific parts.
संबंधित प्रश्न
Mention which of the statements are true (T) and which are false (F). Give reason in support of your answer.
Pituitary is popularly called the master gland
Select the odd one out of the following:
FSH, LH, STH
Describe any four hormones secreted by Adenohypophysis.
Direction: In each of the following questions a statement of assertion (A) is given and a corresponding statement of Reason (R) is given just below it. Mark the correct statement as.
- Assertion (A): The pituitary gland is referred to as the “Master gland”.
- Reason (R): It controls the functioning of other endocrine glands.
The secretion of hormones of adrenal medulla is regulated by ____________.
A patient complains of constant thirst, excessive passing of urine and low blood pressure. When the doctor checked the patients’ blood glucose and blood insulin level, the level were normal or slightly low. The doctor diagnosed the condition as diabetes insupidus. But he decided to measure one more hormone in patients blood. Which hormone does the doctor intend to measure?
You have learnt that a characteristic feature of endocrine system is the presence of feed back loops. By this what is meant if hormone A stimulates gland ‘X’ to secrete hormone B, the production of ‘A’ could be modified when the level of B changes in our blood. An example is the relation between hormones LH and estrogen (E2). An old woman exhibits the following features. High levels of LH in blood but low levels of E2 in the blood. Another woman exhibits high level of LH in blood and also high level of E2 in the blood. Where is the defect in both these women? Provide suitable diagram to support this answer.
Illustrate the differences between the mechanism of action of a protein and a steroid hormone.
Find out the correct labelling of the given figure.
What causes the following?
Acromegaly
