What are Hormones?
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Questions and Answers

What is the primary function of adrenaline produced by the adrenal gland?

  • Controlling puberty and sperm production in males
  • Regulating blood glucose levels
  • Preparing the body for 'fight or flight' response (correct)
  • Regulating heart rate and temperature

Which organ produces insulin?

  • Thyroid
  • Pancreas (correct)
  • Adrenal gland
  • Pituitary gland

Which hormone is involved in regulating metabolism?

  • Oestrogen
  • Adrenaline
  • Thyroxine (correct)
  • Testosterone

What is one of the main differences between the effects of the nervous system and hormones?

<p>Effects of hormones are slower but last longer (C)</p> Signup and view all the answers

Which of the following hormones is involved in the menstrual cycle?

<p>Oestrogen (D)</p> Signup and view all the answers

Where is testosterone produced?

<p>Testes (A)</p> Signup and view all the answers

What role does the liver play in hormone regulation?

<p>Destroys hormones after use (D)</p> Signup and view all the answers

What is the 'master gland' that produces many hormones regulating body conditions?

<p>Pituitary gland (C)</p> Signup and view all the answers

Study Notes

Hormones

  • Hormones are chemical substances produced by glands, carried in the bloodstream, and alter the activity of specific target organs.
  • Example: Adrenaline hormone released by adrenal glands, increasing heart rate.

Characteristics of Hormones

  • Effects are slower than the nervous system but last longer.
  • Once used, hormones are destroyed by the liver.

Major Glands and Their Hormones

Pituitary Gland (Master Gland)

  • Produces many hormones regulating various body conditions.
  • Hormones act on other glands, releasing hormones that bring about change.

Thyroid Gland

  • Produces Thyroxine hormone.
  • Regulates metabolism rate, heart rate, and temperature.

Adrenal Gland

  • Produces adrenaline hormone.
  • Prepares the body for 'fight or flight' response.

Pancreas

  • Produces insulin hormone.
  • Regulates blood glucose level.

Ovaries

  • Produces oestrogen hormone.
  • Involved in the menstrual cycle.

Testes

  • Produces testosterone hormone.
  • Controls puberty and sperm production in males.

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Description

Learn about the basics of hormones, their production, and functions in the human body. Understand how hormones affect target organs and how they differ from the nervous system.

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