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

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

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Multiple Choice

Which type of fluid is found in the scala vestibuli (region A) of the inner ear?

Synovial fluid

Cerebrospinal fluid

Endolymph

Perilymph

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Verified step by step guidance

Step 1: Begin by understanding the anatomy of the inner ear. The inner ear consists of three main regions: the cochlea, vestibule, and semicircular canals. The cochlea is divided into three chambers: scala vestibuli, scala media, and scala tympani.

Step 2: Learn about the types of fluids found in the inner ear. There are two main types of fluids: perilymph and endolymph. Perilymph is found in the scala vestibuli and scala tympani, while endolymph is found in the scala media.

Step 3: Recall the function of perilymph. Perilymph is a fluid similar to extracellular fluid, rich in sodium ions (Na⁺) and low in potassium ions (K⁺). It plays a role in transmitting sound vibrations and maintaining the ionic balance necessary for auditory function.

Step 4: Compare the options provided in the question. Synovial fluid is found in joints, cerebrospinal fluid surrounds the brain and spinal cord, and endolymph is found in the scala media. Perilymph is the correct fluid found in the scala vestibuli.

Step 5: Conclude that the scala vestibuli contains perilymph, based on its anatomical location and the type of fluid present in this region of the inner ear.