Intercostal Connective Tissue

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External Intercostal Muscle:

• Outermost of three muscle layers between ribs.

Origin and Insertion:

• Superior and inferior margins of adjacent ribs.

Innervation:

• Ventral rami of segmental spinal nerves T1 – T11.

Actions:

• Largely hypothetical, but seem to assist in forced respiration.

Internal Intercostal Muscle:

• The middle of three muscle layers between ribs.

Innermost Intercostal Muscle:

• Most internal layer, not continuous throughout rib cage.

More Topics on Chest Wall:

1. Osteology of Pectoral Region
2. Glandular Structure of the Mammary Gland
3. Development of the Breast
4. Fluid Circulation in the Breast
5. Muscles of the Pectoral Region
6. Intercostal Connective Tissue
7. Notes on Neurovascular Bundle

Additional Reading:

Histology and Cytology

1. Cell Components
2. Nervous Tissue
3. Muscle Tissue
4. Lymphoid Tissue
5. Integument
6. Respiratory System
7. Gastrointestinal System
8. Renal/Urinary System
9. Male Reproductive System
10. Female Reproductive System

Gross Anatomy

1. Back and Nervous System
2. Thorax
3. Abdomen, Pelvis, and Perineum
4. Upper Limb
5. Lower Limb
6. Head and Neck
7. Chest Wall
8. Shoulder

Anatomy Videos

1. Video of Musculoskeletal Examination in a Clinical Setting
1. Video of HEENT Examination in a Clinical Setting

Related Topics

1. Jugular Venous Distention Workup

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