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TEAS ScienceHormones and their glands

Endocrine SystemATI TEAS 7 cheat sheet

Hormones and their glands

9 key facts 5 practice questions Reviewed Oct 2026
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The Idea

  • Glands release hormones into the blood
  • Slower than nerves, but effects last longer

Major Glands

  • Pituitary — the 'master gland', controls other glands
  • Thyroid — metabolism (T3, T4); calcitonin lowers blood calcium
  • Adrenal — cortisol (stress), aldosterone (sodium), adrenaline
  • Pancreas — insulin lowers glucose, glucagon raises it

Feedback

  • Most hormones run on negative feedback — the result shuts off the signal
  • Childbirth and clotting use positive feedback

Remember

  • Insulin IN — it moves glucose into cells, lowering blood sugar
Key takeaway

Hormones and their glands

Before you read

Test yourself first: 5 questions

Question 1 of 5

Which endocrine gland is known as the 'master gland'?

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