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

Structure of the Eyeball

Anatomy & Physiology

15. The Special Senses

Structure of the Eyeball

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 of the following statements accurately describes the optic disc?

The optic disc is the area of the retina with the highest concentration of cones.

The optic disc is responsible for focusing light onto the retina.

The optic disc is the point where the optic nerve exits the eye and lacks photoreceptors.

The optic disc is a structure that regulates the amount of light entering the eye.

Previous problemNext problem

Verified step by step guidance

Begin by understanding the anatomy of the eye, specifically the retina and the optic nerve. The retina is the light-sensitive layer at the back of the eye, and the optic nerve is responsible for transmitting visual information from the retina to the brain.

Identify the location and function of the optic disc. The optic disc is located on the retina where the optic nerve exits the eye. It is also known as the 'blind spot' because it lacks photoreceptors, meaning it does not detect light.

Differentiate between the optic disc and other parts of the retina. The optic disc does not contain cones or rods, which are the photoreceptors responsible for detecting light and color. This distinguishes it from areas like the fovea, which has a high concentration of cones for sharp vision.

Clarify the role of the optic disc in vision. Since the optic disc lacks photoreceptors, it does not contribute to image formation or light regulation. Its primary role is as the exit point for the optic nerve fibers.

Review the incorrect statements: The optic disc does not focus light onto the retina, nor does it regulate light entering the eye. These functions are associated with other structures like the lens and the iris.