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 Heart2h 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

2. Cell Chemistry & Cell Components

Atoms- Smallest Unit of Matter

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Atoms- Smallest Unit of Matter

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Multiple Choice

If you were told that concentrations of trace elements above what is required by organisms generally have no effect on those organisms, what would you say?

True. Most organisms have evolved adaptations that allow them to tolerate very high concentrations of trace elements in the environment.

True. Only trace element limitation can lead to disease among organisms.

False. Increasing the concentration of trace elements above what is required generally has a beneficial effect on organisms.

False. Elevated concentrations of some trace elements such as cobalt and chromium can be toxic.

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Verified step by step guidance

Begin by understanding what trace elements are. Trace elements are minerals present in living tissues in small amounts and are essential for various physiological functions.

Consider the role of trace elements in the body. While they are necessary for health, they must be maintained within a specific range. Both deficiency and excess can lead to health issues.

Evaluate the statement that elevated concentrations of trace elements have no effect. This is incorrect because many trace elements can become toxic when their concentrations exceed the required levels.

Examine specific examples of trace elements like cobalt and chromium. These elements, when present in high concentrations, can lead to toxicity and adverse health effects.

Conclude that the correct answer is 'False' because elevated concentrations of certain trace elements can indeed be harmful to organisms, contrary to the statement that they have no effect.