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

Organization of the Body: Body Cavities

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Organization of the Body: Body Cavities

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Problem 11

Textbook Question

The two divisions of the posterior body cavity are the _ and__ body cavities.

Verified step by step guidance

Understand that the posterior body cavity, also known as the dorsal body cavity, is one of the main body cavities in the human body and houses structures of the central nervous system.

Recall that the posterior body cavity is divided into two smaller cavities: one that contains the brain and another that contains the spinal cord.

Identify that the cavity housing the brain is called the cranial cavity, which is located within the skull and protects the brain.

Recognize that the cavity housing the spinal cord is called the vertebral (or spinal) cavity, which runs within the vertebral column and protects the spinal cord.

Combine this information to conclude that the two divisions of the posterior body cavity are the cranial cavity and the vertebral (spinal) cavity.

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Key Concepts

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

Posterior Body Cavity

The posterior body cavity, also known as the dorsal cavity, is one of the two main body cavities in vertebrates. It is divided into two sub-cavities: the cranial cavity, which houses the brain, and the vertebral cavity, which contains the spinal cord. Understanding this division is crucial for studying the organization of the body's internal structures.

Cranial Cavity

The cranial cavity is the upper part of the posterior body cavity, encased by the skull. It protects the brain and provides a supportive environment for its functions. Knowledge of the cranial cavity is essential for understanding neurological anatomy and the relationship between the brain and surrounding structures.

Vertebral Cavity

The vertebral cavity, also known as the spinal cavity, is the lower part of the posterior body cavity that surrounds and protects the spinal cord. It is formed by the vertebrae of the spine and plays a critical role in the central nervous system's function. Familiarity with the vertebral cavity is important for comprehending spinal anatomy and related medical conditions.

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Related Practice

Textbook Question

Match each numbered item with the most closely related lettered item. Use letters for answers in the spaces provided.

______Pericardium

a. Study of tissues

b. Constant internal environment

c. Face-up position

d. Study of functions

e. Positive feedback

f. Organ system

g. Study of cells

h. Negative feedback

i. Serous membrane

j. Study of internal and external body structures

k. Diaphragm

l. Tissue

m. Peritoneal cavity

n. Organ

o. Face-down position

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Multiple Choice

During a dissection, three of the following organs can be observed by making a single large incision. One cannot be observed by that same incision. Which organ would require its own incision to observe?

What are the two subdivisions of the anterior body cavity?

Boxers are taught to tense their muscles to protect themselves from the impact of punches. This is especially true for punches to the abdomen. Why do you think this is the case?

The ventral body cavity is subdivided into which of the following sets of cavities?

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Multiple Choice

The lungs are located in which body cavity?

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Multiple Choice

Which body cavity is further separated into other cavities?

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