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

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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2:20 minutes

Problem 3

Textbook Question

Important functions of water include which of the following?
a. Provides cushioning
b. Acts as a transport medium
c. Participates in chemical reactions
d. Acts as a solvent for sugars, salts, and other solutes
e. Reduces temperature fluctuations

Verified step by step guidance

Step 1: Understand the role of water in the human body by reviewing its physical and chemical properties, such as its polarity, high heat capacity, and ability to form hydrogen bonds.

Step 2: Analyze each option provided in the question to determine if it aligns with the known functions of water in Anatomy & Physiology. For example, water provides cushioning by absorbing shock in areas like joints and the brain.

Step 3: Consider water's role as a transport medium, which is essential for moving nutrients, gases, and waste products through the bloodstream and other bodily fluids.

Step 4: Evaluate water's participation in chemical reactions, such as hydrolysis and dehydration synthesis, which are critical for metabolic processes.

Step 5: Assess water's ability to act as a solvent for sugars, salts, and other solutes due to its polarity, and its role in reducing temperature fluctuations by absorbing and releasing heat slowly.

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Key Concepts

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

Cushioning

Water provides cushioning for organs and tissues, acting as a shock absorber. This is particularly important in the human body, where water-filled spaces, such as synovial fluid in joints, help protect against impact and injury.

Transport Medium

Water serves as a vital transport medium in biological systems, facilitating the movement of nutrients, gases, and waste products. Its liquid state allows for efficient circulation within organisms, such as blood in animals, which is primarily composed of water.

Solvent Properties

Water is often referred to as the 'universal solvent' due to its ability to dissolve a wide range of substances, including sugars, salts, and gases. This property is crucial for biochemical reactions and cellular processes, enabling the transport and interaction of various molecules.

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Textbook Question

All of the following are examples of the four major elements contributing to body mass except:

a. Hydrogen

b. Carbon

c. Nitrogen

d. Sodium

e. Oxygen

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Textbook Question

Provide the atomic symbol for each of the following elements:

a. Calcium

b. Carbon

c. Hydrogen

d. Iron

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Textbook Question

Provide the atomic symbol for each of the following elements:

e. Nitrogen

f. Oxygen

g. Potassium

h. Sodium

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Textbook Question

Consider the following information about three atoms: 12/6 C 13/6 C 14/6 C

How are they similar to one another?

How do they differ from one another?

What are the members of such a group of atoms called?

Using the planetary model, draw the atomic configuration of 12/6 C, showing the relative position and numbers of its subatomic particles

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Textbook Question

Which of the following is (are) true concerning the atomic nucleus?

a. It contains the mass of the atom.

b. The negatively charged subatomic particles are here.

c. Subatomic particles can be ejected.

d. It contains subatomic particles that determine atomic number.

e. It contains subatomic particles that interact with other atoms.

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Textbook Question

Pick out the correct match(es) of element and number of valence electrons. Draw a planetary model of each atom to help you choose the best answer.

a. Oxygen—6

b. Chlorine—8

c. Phosphorus—5

d. Nitrogen—3

e. Carbon—4

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Textbook Question

Define radioactivity. If an element has three isotopes, which of them (the lightest, the one with an intermediate mass, or the heaviest) is most likely to be a radioisotope, and why?

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Textbook Question

Define molecule as it relates to molecular substances and compounds.

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