Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

16. The Endocrine System

Introduction to the Endocrine System

Anatomy & Physiology

16. The Endocrine System

Introduction to the Endocrine System

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Multiple Choice

Which chemicals are primarily released from the adrenal medulla?

Thyroxine and calcitonin

Cortisol and aldosterone

Epinephrine and norepinephrine

Insulin and glucagon

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Verified step by step guidance

Step 1: Understand the function of the adrenal medulla. The adrenal medulla is the inner part of the adrenal gland and is responsible for releasing hormones in response to stress, particularly during the 'fight or flight' response.

Step 2: Identify the primary hormones released by the adrenal medulla. These hormones are catecholamines, specifically epinephrine (adrenaline) and norepinephrine (noradrenaline). They play a key role in increasing heart rate, blood pressure, and energy availability.

Step 3: Differentiate the adrenal medulla from the adrenal cortex. The adrenal cortex releases steroid hormones such as cortisol and aldosterone, while the adrenal medulla releases catecholamines.

Step 4: Eliminate incorrect options based on their source. Thyroxine and calcitonin are produced by the thyroid gland, not the adrenal medulla. Insulin and glucagon are secreted by the pancreas.

Step 5: Confirm the correct answer. Based on the function and hormone production of the adrenal medulla, the correct chemicals released are epinephrine and norepinephrine.