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

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

The atria are the 'upstairs' chambers of the heart. Which parts are considered the 'downstairs' chambers?

Ventricles

Septum

Valves

Auricles

Previous problemNext problem

Verified step by step guidance

Understand the anatomy of the heart: The heart is divided into four chambers—two atria (upper chambers) and two ventricles (lower chambers). The atria receive blood, while the ventricles pump blood out of the heart.

Identify the 'downstairs' chambers: The ventricles are considered the 'downstairs' chambers because they are located in the lower part of the heart and are responsible for pumping blood to the lungs and the rest of the body.

Clarify the role of the septum: The septum is a wall of tissue that separates the left and right sides of the heart. It is not a chamber but plays a crucial role in dividing the heart's chambers and preventing the mixing of oxygenated and deoxygenated blood.

Explain the function of valves: Valves are structures that ensure one-way blood flow through the heart. They are not chambers but are essential for maintaining proper circulation by preventing backflow of blood.

Define auricles: Auricles are small, ear-like extensions of the atria. They are part of the atria and not considered 'downstairs' chambers. Their function is to increase the atrial volume capacity.