Table of contents

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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

15. The Special Senses

Rods, Cones, and Light

Anatomy & Physiology

15. The Special Senses

Rods, Cones, and Light

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Multiple Choice

What is the primary difference between rods and cones in the human retina?

Rods are concentrated in the fovea, while cones are distributed throughout the retina.

Rods detect fine detail, while cones are more sensitive to motion.

Rods are responsible for color vision, while cones are responsible for low-light vision.

Rods are more sensitive to light and are responsible for vision in dim light, while cones are responsible for color vision and function best in bright light.

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Verified step by step guidance

Begin by understanding the structure of the human retina, which contains two types of photoreceptor cells: rods and cones.

Rods are specialized for low-light conditions and are highly sensitive to light, allowing us to see in dimly lit environments. They do not detect color and are primarily responsible for night vision.

Cones, on the other hand, are responsible for color vision and function optimally in bright light conditions. They allow us to perceive fine detail and a wide range of colors.

Consider the distribution of these photoreceptors: rods are more numerous and are distributed throughout the retina, except in the fovea, which is densely packed with cones.

Reflect on the functional differences: rods are crucial for peripheral and night vision, while cones are essential for central vision and color discrimination.