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

Structure of the Eyeball

Anatomy & Physiology

15. The Special Senses

Structure of the Eyeball

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Multiple Choice

What part of the retina contains only cones and is the area of greatest visual acuity?

Fovea centralis

Retinal periphery

Macula lutea

Optic disc

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Verified step by step guidance

Understand the structure of the retina: The retina is the light-sensitive layer of tissue at the back of the inner eye. It contains photoreceptor cells known as rods and cones.

Differentiate between rods and cones: Rods are responsible for vision at low light levels, while cones are responsible for color vision and function best in relatively bright light.

Identify the fovea centralis: The fovea centralis is a small depression in the retina where visual acuity is highest. It contains only cones and is responsible for sharp central vision.

Consider the macula lutea: The macula lutea is an oval-shaped pigmented area near the center of the retina. It surrounds the fovea and contains a high density of cones, but not exclusively.

Recognize the optic disc: The optic disc is the point of exit for ganglion cell axons leaving the eye. It contains no photoreceptors and is known as the blind spot.