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 posterior-superior surface of the heart is called the ______.

septum

apex

base

atrium

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Verified step by step guidance

Step 1: Begin by understanding the anatomical orientation of the heart. The heart has several surfaces: anterior, posterior, superior, and inferior. Each surface is associated with specific structures and functions.

Step 2: Recall that the posterior-superior surface of the heart is primarily formed by the left atrium and a portion of the right atrium. This surface is opposite to the apex, which is the pointed inferior tip of the heart.

Step 3: Understand the term 'base' in the context of heart anatomy. The base of the heart refers to the broad, flat posterior-superior surface where major blood vessels (like the pulmonary veins and venae cavae) connect to the heart.

Step 4: Differentiate between the terms provided in the options: 'septum' refers to the internal wall dividing the heart chambers, 'apex' is the pointed tip of the heart, and 'atrium' refers to the upper chambers of the heart. None of these terms describe the posterior-superior surface except 'base.'

Step 5: Conclude that the posterior-superior surface of the heart is called the 'base,' as it is anatomically correct and matches the description provided in the problem.