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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1:45 minutes

Problem 14

Textbook Question

Name the eight bones of the cranium.

Verified step by step guidance

Understand that the cranium is the part of the skull that encloses and protects the brain. It is composed of eight bones that are fused together.

Learn that these bones are categorized into two groups: paired bones (occurring on both sides of the cranium) and unpaired bones (occurring as single structures).

Identify the paired bones of the cranium: the parietal bones and the temporal bones. These are located symmetrically on either side of the skull.

Identify the unpaired bones of the cranium: the frontal bone (forehead region), occipital bone (back of the skull), sphenoid bone (base of the skull), and ethmoid bone (located between the eyes and forming part of the nasal cavity).

Review the names of all eight bones: frontal, parietal (2), temporal (2), occipital, sphenoid, and ethmoid. These collectively form the cranium and protect the brain.

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Key Concepts

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

Cranial Bones

The cranial bones are the eight bones that form the protective case around the brain. They include the frontal, parietal, temporal, occipital, sphenoid, and ethmoid bones. These bones are crucial for safeguarding the brain and providing attachment points for muscles and ligaments.

Anatomy of the Skull

The anatomy of the skull encompasses both the cranial and facial bones. Understanding the skull's structure is essential for recognizing how the cranial bones interact with the facial bones and contribute to the overall shape and function of the head. This knowledge is fundamental in fields such as medicine and anthropology.

Function of Cranial Bones

Cranial bones serve several vital functions, including protecting the brain from injury, supporting the structure of the head, and housing the organs of hearing and balance. They also play a role in the formation of the cranial cavity, which contains cerebrospinal fluid that cushions the brain.

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Master Introduction to the Skull with a bite sized video explanation from Bruce Bryan

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Related Practice

Textbook Question

A deviated septum results when the nasal septum is shifted to one side or the other. What bones might be involved in this condition? Why might this make breathing difficult?

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Textbook Question

Some health practitioners claim that the cranial bones are moveable and that they are able to move these bones to treat a variety of conditions. Is this likely to be true in an adult? Why or why not?

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Textbook Question

Bones that articulate with the sphenoid include which of the following?

a. Parietal

b. Frontal

c. Occipital

d. Zygomatic

e. Ethmoid

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Textbook Question

Name two ways in which the fetal skull differs from the adult skull. A certain short-day plant flowers only when days are less than 12 hours long. Which of the following would cause it to flower?

a. A 9-hour night and 15-hour day with 1 minute of darkness after 7 hours

b. An 8-hour day and 16-hour night with a flash of white light after 8 hours

c. A 13-hour night and 11-hour day with 1 minute of darkness after 6 hours

d. A 12-hour day and 12-hour night with a flash of red light after 6 hours

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Textbook Question

What facial bone forms the chin? The cheekbone? The upper jaw? The bony eyebrow ridges?

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Textbook Question

Identify the cranial and facial bones in the diagram below.