Which one of the following statements is correct?a)Neurons regulate e...
Neurons and endocrine system are two major systems in the body that help to maintain homeostasis. Neurons are responsible for transmitting information through electrical and chemical signals, while the endocrine system regulates various bodily functions through the secretion of hormones.
The correct statement is option 'A', which states that neurons regulate endocrine activity, but not vice versa. This means that the nervous system can influence the release of hormones from endocrine glands, but the endocrine system cannot directly regulate neuronal activity.
Explanation:
Neurons regulate endocrine activity:
- The nervous system can directly control the release of hormones from endocrine glands through the hypothalamus-pituitary axis. The hypothalamus produces releasing and inhibiting hormones, which travel to the pituitary gland and stimulate or inhibit the secretion of various hormones.
- For example, when the body is under stress, the hypothalamus releases corticotropin-releasing hormone (CRH), which stimulates the pituitary gland to release adrenocorticotropic hormone (ACTH). ACTH then stimulates the adrenal glands to produce cortisol, which helps the body cope with stress.
- Similarly, the sympathetic nervous system can stimulate the adrenal medulla to release adrenaline and noradrenaline, which help to prepare the body for fight or flight response.
Endocrine system cannot directly regulate neuronal activity:
- Hormones released by the endocrine system can influence neuronal activity, but they cannot directly control it.
- For example, thyroid hormones can affect brain development and function, but they do not directly regulate the firing of neurons.
- Similarly, sex hormones like estrogen and testosterone can affect mood and behavior, but they do not directly control neuronal activity.
In conclusion, the statement that neurons regulate endocrine activity, but not vice versa, is correct. The nervous system can directly control the release of hormones from endocrine glands, but hormones cannot directly regulate neuronal activity.
Which one of the following statements is correct?a)Neurons regulate e...
Neurons regulate endocrine activity, but not vice- versa.Neurons in the hypothalamus secrete thyroid releasing hormone (TRH), which stimulates cells in the anterior pituitary to secrete thyroid-stimulating hormone (TSH).
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