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

Homeostasis

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Homeostasis

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Problem 17

Textbook Question

A gradient exists:
a. When heat is concentrated in one area of the body
b. When more of a substance is located in one place than in another
c. When there is higher pressure in one place than in another
d. All of the above are correct
e. None of the above are correct

Verified step by step guidance

Step 1: Understand the concept of a gradient. In Anatomy & Physiology, a gradient refers to a difference in a particular property (e.g., concentration, pressure, temperature) between two regions. This difference drives movement or flow from one area to another, typically from high to low values.

Step 2: Analyze option (a): 'When heat is concentrated in one area of the body.' This describes a temperature gradient, where heat moves from a region of higher temperature to a region of lower temperature. Determine if this aligns with the definition of a gradient.

Step 3: Analyze option (b): 'When more of a substance is located in one place than in another.' This describes a concentration gradient, where substances like ions or molecules move from areas of higher concentration to areas of lower concentration. Check if this fits the definition of a gradient.

Step 4: Analyze option (c): 'When there is higher pressure in one place than in another.' This describes a pressure gradient, where fluids or gases move from areas of higher pressure to areas of lower pressure. Confirm if this matches the concept of a gradient.

Step 5: Evaluate option (d): 'All of the above are correct.' If all the previous options (a, b, and c) align with the definition of a gradient, then this option would be correct. Option (e) can be ruled out if all the above are indeed correct.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Gradient

A gradient refers to a difference in a particular property, such as temperature, concentration, or pressure, between two areas. This difference creates a potential for movement or change, as substances tend to move from areas of higher concentration or pressure to areas of lower concentration or pressure, seeking equilibrium.

Heat Concentration

Heat concentration occurs when thermal energy is unevenly distributed within a system, leading to areas of higher temperature. This can create a thermal gradient, which drives heat transfer from the hotter area to cooler areas, influencing various physiological processes in the body.

Pressure Gradient

A pressure gradient exists when there is a difference in pressure between two regions. This gradient can cause fluids or gases to flow from areas of higher pressure to areas of lower pressure, which is fundamental in various biological and physical processes, including respiration and blood circulation.

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Related Practice

Textbook Question

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

Homeostasis is the condition of having a dynamic equilibrium of the internal environment.

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Textbook Question

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

Positive feedback loops are triggered by a deviation from the set point of a regulated variable and are shut down when conditions return to the set point.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

Cell-cell communication is required to coordinate the activities of the whole body.

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Textbook Question

The baroreceptor reflex causes blood pressure to drop when it rises dangerously high. Predict whether this is a positive or negative feedback loop. Explain your reasoning.

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Multiple Choice

Which example most clearly describes a system maintained by homeostasis?

Which example below describes a system that is NOT able to maintain homeostasis?

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