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

15. The Special Senses

Rods, Cones, and Light

Anatomy & Physiology

15. The Special Senses

Rods, Cones, and Light

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Multiple Choice

Which area of the retina has the highest concentration of cones?

Macula lutea

Peripheral retina

Fovea centralis

Optic disc

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Verified step by step guidance

Understand the structure of the retina: The retina is the light-sensitive layer at the back of the eye, containing photoreceptor cells known as rods and cones.

Identify the types of photoreceptor cells: Cones are responsible for color vision and are concentrated in specific areas of the retina, while rods are more numerous and are responsible for vision in low light conditions.

Locate the fovea centralis: The fovea centralis is a small pit located in the center of the macula lutea. It is the area of the retina with the highest concentration of cones, allowing for sharp central vision.

Differentiate between the macula lutea and the fovea centralis: While the macula lutea contains a high density of cones, the fovea centralis within it has the highest concentration, making it crucial for tasks requiring detailed vision.

Recognize the role of the optic disc: The optic disc is where the optic nerve exits the eye; it contains no photoreceptor cells, hence it is known as the blind spot.