true or false:

the endocrine system only regulates long-term changes in the body.

False. The endocrine system can regulate both short-term and long-term changes in the body. Hormones released by the endocrine system can have immediate effects, such as the release of adrenaline during the "fight or flight" response, as well as long-term effects such as regulating growth and development.

False.

Explanation:
To determine whether the statement is true or false, we can break it down into two parts:

1. Does the endocrine system regulate changes in the body?
2. Does the endocrine system only regulate long-term changes in the body?

1. The endocrine system: The endocrine system is responsible for producing and secreting hormones that travel through the bloodstream to target cells or organs. These hormones help regulate various bodily functions, including growth and development, metabolism, reproduction, and response to stress. So, it is true that the endocrine system regulates changes in the body.

2. Long-term changes: While the endocrine system does play a significant role in long-term changes, it also influences short-term changes in the body. For example, hormones like adrenaline can be released quickly in response to stress, leading to an immediate increase in heart rate and blood pressure. Additionally, hormones like insulin help regulate blood sugar levels on a more immediate basis. Therefore, the statement that the endocrine system only regulates long-term changes is false.

In conclusion, false. The endocrine system regulates both long-term and short-term changes in the body.

False.

While the endocrine system is primarily responsible for regulating long-term changes in the body, it also plays a role in short-term changes and responses. For example, hormones released by the endocrine system can regulate heart rate, blood glucose levels, and stress responses, which are immediate changes in the body.