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

A blood pressure reading of 114/54 mmHg indicates which of the following about the circulatory system?

This reading indicates hypertension.

Both numbers represent the average arterial pressure.

The diastolic pressure is 114 mmHg and the systolic pressure is 54 mmHg.

The systolic pressure is 114 mmHg and the diastolic pressure is 54 mmHg.

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Verified step by step guidance

Understand the terms 'systolic pressure' and 'diastolic pressure': Systolic pressure is the maximum pressure exerted on the arteries during the contraction of the heart (specifically the ventricles), while diastolic pressure is the minimum pressure exerted when the heart is relaxed between beats.

Identify the values in the blood pressure reading: The first number (114 mmHg) represents the systolic pressure, and the second number (54 mmHg) represents the diastolic pressure.

Evaluate the statement 'This reading indicates hypertension': Hypertension is defined as a blood pressure reading consistently above 140/90 mmHg. Since 114/54 mmHg is below this threshold, this statement is incorrect.

Evaluate the statement 'Both numbers represent the average arterial pressure': The average arterial pressure is calculated using the formula: \( \text{Mean Arterial Pressure (MAP)} = \text{Diastolic Pressure} + \frac{1}{3}(\text{Systolic Pressure} - \text{Diastolic Pressure}) \). Therefore, neither the systolic nor diastolic pressure alone represents the average arterial pressure.

Evaluate the statement 'The diastolic pressure is 114 mmHg and the systolic pressure is 54 mmHg': This statement incorrectly swaps the systolic and diastolic values. The correct interpretation is that the systolic pressure is 114 mmHg and the diastolic pressure is 54 mmHg.