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

7. The Skeletal System

The Skull

Anatomy & Physiology

7. The Skeletal System

The Skull

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Problem 6

Textbook Question

The structure(s) that divide the nasal cavity into right and left sides is/are the:

a. Nasal bones
b. Perpendicular plate of the ethmoid bone
c. Vomer
d. Both a and b are correct
e. Both b and c are correct

Verified step by step guidance

Step 1: Understand the anatomy of the nasal cavity. The nasal cavity is divided into right and left sides by a structure called the nasal septum, which is composed of several bones and cartilage.

Step 2: Identify the bones involved in forming the nasal septum. The perpendicular plate of the ethmoid bone and the vomer are the two primary bones that contribute to the nasal septum.

Step 3: Analyze the options provided in the question. Option (a) refers to the nasal bones, which form the bridge of the nose but do not divide the nasal cavity. Option (b) refers to the perpendicular plate of the ethmoid bone, which is part of the nasal septum. Option (c) refers to the vomer, which also contributes to the nasal septum.

Step 4: Evaluate the combined options. Option (d) suggests both the nasal bones and the perpendicular plate of the ethmoid bone are correct, but nasal bones do not divide the nasal cavity. Option (e) suggests both the perpendicular plate of the ethmoid bone and the vomer are correct, which aligns with the anatomy of the nasal septum.

Step 5: Conclude that the correct answer involves the structures that form the nasal septum, specifically the perpendicular plate of the ethmoid bone and the vomer, as these divide the nasal cavity into right and left sides.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Nasal Cavity Anatomy

The nasal cavity is a hollow space within the nose that is divided into two halves by a structure called the nasal septum. Understanding the anatomy of the nasal cavity is crucial for identifying the components that contribute to its division, including bones and cartilage.

Nasal Septum

The nasal septum is the partition that separates the left and right nasal cavities. It is primarily composed of the perpendicular plate of the ethmoid bone and the vomer bone, along with cartilage. This structure plays a vital role in airflow regulation and overall nasal function.

Ethmoid and Vomer Bones

The ethmoid bone is a complex bone located between the nasal cavity and the brain, contributing to the formation of the nasal septum through its perpendicular plate. The vomer is a thin, plow-shaped bone that also forms part of the septum. Both bones are essential for understanding the structural division of the nasal cavity.