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Questions and Answers
Which gland is known as the master gland of the endocrine system?
Which gland is known as the master gland of the endocrine system?
- Pituitary gland (correct)
- Adrenal gland
- Pancreas
- Thyroid gland
What does the thyroid gland produce that is essential for regulating metabolism?
What does the thyroid gland produce that is essential for regulating metabolism?
- Adrenaline
- Insulin
- Thyroxine (correct)
- Cortisol
What is a key factor that influences the concentration of hormones in the bloodstream?
What is a key factor that influences the concentration of hormones in the bloodstream?
- The number of blood cells present
- The temperature of the environment
- The concentration of other substances like calcium (correct)
- The diet of the individual
Which function is NOT typically associated with hormones in the endocrine system?
Which function is NOT typically associated with hormones in the endocrine system?
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Study Notes
Endocrine System
- Composed of glands that produce hormones
- Hormones are chemical messengers
- Hormones transmit information and instructions between cells
Functions of the Endocrine System
- Regulates hormone release based on:
- Concentration of hormones in the blood
- Concentration of other substances in the blood (e.g., calcium)
- Hormone levels are influenced by:
- Stress
- Infections
- Fluid and mineral balance
Hormones' Role
- Regulate:
- Mood
- Growth
- Development
- Organ function
- Metabolism
- Reproduction
Pituitary Gland
- Known as the "master gland"
- Controls the activity of other endocrine glands
Thyroid Gland
- Produces thyroxine
- Thyroxine contains iodine
- Regulates metabolic rate
Endocrine Glands and Hormone Release
- Release hormones directly into the bloodstream
- Bloodstream circulates hormones to cells throughout the body
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