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 Heart2h 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

Inner Layer of the Eyeball

Anatomy & Physiology

15. The Special Senses

Inner Layer of the Eyeball

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Multiple Choice

Different animal species differ in the relative number of rods and cones that are present in their eyes. Which of the following statements would you expect to be true about these differences?

Species that require greater visual acuity will have relatively more rods in their eyes; species that require greater peripheral vision will have more cones.

Nocturnal (active at night) species will have relatively more rods in their eyes; diurnal (active in the day) species will have relatively more cones.

Species that require better depth perception will have relatively more cones in their eyes; species that require greater field of vision will have more rods.

Nocturnal (active at night) species will have relatively more cones in their eyes; diurnal (active in the day) species will have relatively more rods.

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Verified step by step guidance

Understand the function of rods and cones in the eye: Rods are responsible for vision in low light conditions and are more sensitive to light, while cones are responsible for color vision and function best in bright light.

Consider the activity patterns of nocturnal and diurnal species: Nocturnal species are active at night and require vision in low light conditions, whereas diurnal species are active during the day and benefit from color vision.

Relate the function of rods to nocturnal species: Since nocturnal species need to see in the dark, they would have a higher number of rods to enhance their ability to see in low light.

Relate the function of cones to diurnal species: Diurnal species, being active during the day, would have more cones to take advantage of bright light and color vision.

Evaluate the statements based on the understanding of rods and cones: The statement that nocturnal species will have relatively more rods and diurnal species will have relatively more cones aligns with the known functions of these photoreceptors.