Correctly label the muscles of the thoracic cavity and the abdomen. Transverse abdominal (cut) Internal oblique (cut) External intercostals Internal intercostals Pectoralis minor Pectoralis minor Internal abdominal oblique Serratus anterior External intercostals Internal intercostals Rectus sheath Rectus sheath Posternior wal of rectus sheath (rectus abdominis removed) Transverse abdominal (cut) External oblique (cut) Serratus anterior

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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**Muscles of the Thoracic Cavity and the Abdomen**

1. **Pectoralis Minor**
2. **Serratus Anterior**
3. **Internal Intercostals**
4. **External Intercostals**
5. **Transverse Abdominal (cut)**
6. **Internal Oblique (cut)**
7. **External Oblique (cut)**
8. **Rectus Sheath**

### Diagram Explanation:

- **Muscle Labels:**
  - The diagram illustrates the positioning of various muscles within the thoracic cavity and abdominal region.
  - Muscles on the right side of the diagram are labeled with lines connecting them to their respective names on the left side of the image.

- **Highlighted Muscles:**
  - Major muscles identified include the Pectoralis Minor, which aids in shoulder movement, and the Serratus Anterior, important for the movement of the scapula.
  - The Intercostal muscles, both Internal and External, play crucial roles in the mechanics of breathing.
  - The Transverse Abdominal and Oblique muscles are crucial for maintaining abdominal wall integrity and movement.
  - The Rectus Sheath, which envelopes the Rectus Abdominis muscle, is also highlighted.

- **Visual Features:**
  - Muscles are color-coded for easy identification.
  - The diagram uses shading and distinct color patterns to show depth and structure.

This visual tool is ideal for understanding the complex layout of muscles in these bodily regions.
Transcribed Image Text:**Muscles of the Thoracic Cavity and the Abdomen** 1. **Pectoralis Minor** 2. **Serratus Anterior** 3. **Internal Intercostals** 4. **External Intercostals** 5. **Transverse Abdominal (cut)** 6. **Internal Oblique (cut)** 7. **External Oblique (cut)** 8. **Rectus Sheath** ### Diagram Explanation: - **Muscle Labels:** - The diagram illustrates the positioning of various muscles within the thoracic cavity and abdominal region. - Muscles on the right side of the diagram are labeled with lines connecting them to their respective names on the left side of the image. - **Highlighted Muscles:** - Major muscles identified include the Pectoralis Minor, which aids in shoulder movement, and the Serratus Anterior, important for the movement of the scapula. - The Intercostal muscles, both Internal and External, play crucial roles in the mechanics of breathing. - The Transverse Abdominal and Oblique muscles are crucial for maintaining abdominal wall integrity and movement. - The Rectus Sheath, which envelopes the Rectus Abdominis muscle, is also highlighted. - **Visual Features:** - Muscles are color-coded for easy identification. - The diagram uses shading and distinct color patterns to show depth and structure. This visual tool is ideal for understanding the complex layout of muscles in these bodily regions.
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