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

Which structure contains the gray commissure?

Cerebral cortex

Spinal cord

Cerebellum

Medulla oblongata

Previous problemNext problem

Verified step by step guidance

Understand the term 'gray commissure': The gray commissure is a thin strip of gray matter that connects the two halves of the spinal cord. It is part of the central nervous system and plays a role in communication between the left and right sides of the spinal cord.

Review the anatomy of the spinal cord: The spinal cord contains both gray matter and white matter. The gray matter is organized into regions called horns, and the gray commissure is located centrally, connecting the left and right sides of the gray matter.

Eliminate incorrect options: The cerebral cortex, cerebellum, and medulla oblongata are parts of the brain, not the spinal cord. They do not contain the gray commissure.

Focus on the spinal cord: The spinal cord is the correct structure that contains the gray commissure. It is located in the central region of the spinal cord and surrounds the central canal, which contains cerebrospinal fluid.

Conclude the reasoning: Based on anatomical knowledge, the gray commissure is a feature specific to the spinal cord and is not found in the other listed structures.