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

Introduction to Eukaryotic Organelles

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Introduction to Eukaryotic Organelles

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Multiple Choice

In the sheep brain, what is the primary function of the optic chiasm?

It produces cerebrospinal fluid for the brain.

It is the site where optic nerve fibers partially cross to the opposite side of the brain.

It controls voluntary muscle movements.

It regulates hormone secretion from the pituitary gland.

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Verified step by step guidance

Step 1: Begin by identifying the optic chiasm as a structure in the brain. It is located at the base of the brain, near the hypothalamus, and is part of the visual system.

Step 2: Understand the role of the optic chiasm in vision. It is the site where some optic nerve fibers from each eye cross to the opposite side of the brain. This partial crossing is crucial for binocular vision and depth perception.

Step 3: Eliminate incorrect options based on the function of the optic chiasm. For example, it does not produce cerebrospinal fluid (this is the role of the choroid plexus), control voluntary muscle movements (this is managed by the motor cortex and cerebellum), or regulate hormone secretion (this is the role of the hypothalamus and pituitary gland).

Step 4: Focus on the correct answer: The optic chiasm is specifically involved in the partial crossing of optic nerve fibers, which allows visual information from both eyes to be processed by both hemispheres of the brain.

Step 5: Conclude that the primary function of the optic chiasm is to facilitate the partial crossing of optic nerve fibers to the opposite side of the brain, enabling integrated visual processing.