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

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

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Multiple Choice

The secretions of the adrenal medulla act to supplement the effects of which of the following?

the sympathetic nervous system

the digestive system

the endocrine pancreas

the parasympathetic nervous system

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Verified step by step guidance

Understand the role of the adrenal medulla: The adrenal medulla is part of the adrenal glands and is responsible for secreting catecholamines, primarily epinephrine (adrenaline) and norepinephrine. These hormones play a key role in the body's 'fight or flight' response.

Review the sympathetic nervous system: The sympathetic nervous system is a division of the autonomic nervous system that prepares the body for stressful or emergency situations. It increases heart rate, dilates airways, and redirects blood flow to muscles, among other effects.

Connect the adrenal medulla to the sympathetic nervous system: The adrenal medulla's secretion of epinephrine and norepinephrine amplifies and supplements the effects of the sympathetic nervous system, ensuring a rapid and widespread response to stress.

Eliminate unrelated options: The digestive system, endocrine pancreas, and parasympathetic nervous system are not directly involved in the 'fight or flight' response. The parasympathetic nervous system, in fact, has opposing effects, promoting 'rest and digest' activities.

Conclude the relationship: The secretions of the adrenal medulla act to supplement the effects of the sympathetic nervous system, enhancing the body's ability to respond to stress or danger.