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

Anatomical Terms for the Head and Neck

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Anatomical Terms for the Head and Neck

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Multiple Choice

Which cranial bone is composed of two masses connected horizontally by thin plates?

Frontal bone

Occipital bone

Ethmoid bone

Temporal bone

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Verified step by step guidance

Identify the cranial bones listed in the problem: Frontal bone, Occipital bone, Ethmoid bone, and Temporal bone.

Understand the structural characteristics of each bone: The Frontal bone forms the forehead and part of the eye sockets, the Occipital bone forms the back and base of the skull, the Ethmoid bone is a light, spongy bone located between the eyes, and the Temporal bone forms the sides and base of the skull.

Focus on the Ethmoid bone, as it is described as being composed of two masses connected horizontally by thin plates. This is a unique feature of the Ethmoid bone, which includes the cribriform plate and perpendicular plate.

Recall that the cribriform plate of the Ethmoid bone contains small openings for the passage of olfactory nerves, and the perpendicular plate contributes to the nasal septum. These features align with the description in the question.

Conclude that the Ethmoid bone is the correct answer based on its unique structure of two masses connected by thin plates, distinguishing it from the other cranial bones listed.