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CLASS 8 · LEARNING KNOWLEDGE

Hormones and regulation – basic principles

How it works

Hormones are messenger substances. In animals, many hormones are produced in endocrine glands and transported through the blood to target cells. In plants, hormones can be produced in different tissues and distributed in other ways. Hormones regulate many processes, for example growth, metabolism, water balance, stress responses and reproduction. Their effect depends on suitable receptors on the target cells. Hormone production is often controlled by feedback so that a balance in the body or organism is maintained. Well-known hormone-producing organs in humans are, for example, the pancreas, thyroid gland and adrenal glands.

Note
Hormones are chemical messenger substances that trigger specific effects in target cells with suitable receptors. In animals they are often transported through the blood; their production and effect are often regulated by feedback mechanisms.

An example

Which organ produces insulin, an important hormone for blood sugar regulation?

The pancreas produces insulin. Insulin is released into the blood and lowers the blood sugar level by promoting the uptake of glucose into the cells.

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50 Exercises · three difficulty levels · selection and number input

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Own explanation and own practice exercises by AmyMath. Subject reference framework: KMK Educational Standards Mathematics ESA/MSA. The topic assignment may vary by federal state.