Respuesta :
1. The statement that endocrine system functions independently of the nervous system is false.
2. It is not true that the target tissues of hormones are always near the glands that release the hormones.
3. It is true that hormones act on target tissues to regulate the body’s activities.
4. The endocrine system controls the amount of a particular hormone in the blood by stopping its release when it reaches a certain level.
5. The function of hormones is to turn off, turn on and speed up organ and tissue activities.
6. It is true that the endocrine system maintains homeostasis, or internal balance, through negative feedback.
7. Cells that identify the hormone’s chemical structure are called target cells.
What is endocrine system?
- The endocrine system is a complex network of glands and organs that secretes its hormone (chemical messenger) directly into the blood stream.
- The hormones then reaches its target cells (on which it has to act) through blood stream.
- The target cells may or may not be close to the hormone producing glands.
- Endocrine and nervous system both work together to initiate or control the movement and physiological function.
- The homeostasis of a body is maintain through negative feedback mechanism (activation of one component does not activate the other).
For example: when blood sugar level in our body increases, pancreas secrete insulin to lower it.
- The target cell have a receptor which is specific for a particular hormone.
Hence, the correct options are: 1- True, 2- False, 3- True, 4-B. Hormone, 5- D. All of the above, 6- True and 7- B. target cells.
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