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Questions and Answers
What is the main function of hormones in the endocrine system?
What organ or tissue produces a hormone?
What happens if the fertilized egg does not implant into the uterus lining?
When does puberty typically occur?
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Which hormones cause secondary sex characteristics to develop during puberty?
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What term describes the loss of blood and tissue from the lining of the uterus during the menstrual cycle?
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Study Notes
Hormones and the Endocrine System
- Hormones are secreted by glands in the endocrine system and act as chemical messengers in the body.
- They are produced by glands and carried by the blood to specific target organs, altering their activity before being destroyed by the liver.
Puberty
- Puberty is the stage in life when a child's body develops into an adult's body, typically occurring between ages 10 and 16.
- Hormones cause significant physical and emotional changes during puberty.
Hormones and Secondary Sex Characteristics
- Reproductive hormones trigger the development of secondary sex characteristics in boys and girls during puberty.
The Menstrual Cycle
Overview
- The menstrual cycle is a recurring process that takes around 28 days.
Phases of the Menstrual Cycle
- The lining of the uterus is prepared for pregnancy during the cycle.
- If implantation of the fertilised egg into the uterus lining does not occur, the lining is shed, resulting in menstruation (also known as a 'period').
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Description
Test your knowledge on hormones and the endocrine system, including how hormones are secreted by glands, their role in puberty, and their effects on physical and emotional characteristics. Learn about the functions of glands and how hormones act as chemical messengers in the body.
