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 Directional Terms

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Directional Terms

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3:17 minutes

Problem 29

Textbook Question

Which sectional plane could divide the body so that the face remains intact?
(a) Sagittal plane
(b) Frontal (coronal) plane
(c) Equatorial plane
(d) Midsagittal plane
(e) Parasagittal plane

Verified step by step guidance

Understand the concept of sectional planes: Sectional planes are imaginary lines used to divide the body into different parts for anatomical study. Common planes include sagittal, frontal (coronal), transverse, and variations like midsagittal and parasagittal.

Review the sagittal plane: The sagittal plane divides the body into left and right portions. If the division is exactly in the middle, it is called the midsagittal plane. Parasagittal planes are off-center sagittal planes.

Examine the frontal (coronal) plane: The frontal plane divides the body into anterior (front) and posterior (back) portions. This plane keeps the face intact because it slices through the body vertically, separating the front from the back.

Consider the equatorial plane: This term is not commonly used in anatomy and physiology. It may refer to a transverse plane, which divides the body into superior (upper) and inferior (lower) portions, but it would not keep the face intact.

Determine the correct plane: To keep the face intact, the sectional plane must not divide the face into left and right portions (sagittal or midsagittal) or top and bottom portions (transverse). The frontal (coronal) plane is the correct choice because it divides the body into front and back portions, preserving the face as a whole.

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Key Concepts

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

Sagittal Plane

The sagittal plane is a vertical plane that divides the body into left and right sections. If a cut is made along this plane, it can separate the face from the rest of the body, depending on the specific location of the cut. This plane is essential for understanding how body structures are oriented and how they can be sectioned.

Frontal (Coronal) Plane

The frontal or coronal plane divides the body into anterior (front) and posterior (back) sections. A cut along this plane would separate the face from the back of the head and body, thus keeping the face intact. This concept is crucial for visualizing how different body parts relate to one another in three-dimensional space.

Midsagittal vs. Parasagittal Plane

The midsagittal plane is a specific type of sagittal plane that divides the body into equal left and right halves, while the parasagittal plane divides it into unequal sections. Understanding the difference between these planes is important for determining how various sections of the body can be isolated while keeping certain areas, like the face, intact.

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Textbook Question

Label the directional terms in the figures below.

a. ____

b. ____

c. ____

d. ____

e. ____

f. ____

g. ____

h. ____

i. ____