Intercostal means situated or extending between the ribs.
Understanding Intercostal
The term "intercostal" specifically relates to the anatomical space and structures found between the ribs. According to the provided reference, intercostal means "situated or extending between the ribs." This is most commonly used in reference to the intercostal muscles, nerves, and arteries.
Intercostal Structures and Their Functions
Here's a breakdown of what you might find in an intercostal space:
- Intercostal Muscles: These muscles, including the external, internal, and innermost intercostals, play a crucial role in respiration (breathing).
- External Intercostals: Primarily involved in inspiration (inhaling).
- Internal Intercostals: Primarily involved in expiration (exhaling).
- Intercostal Nerves: These nerves provide sensory and motor innervation to the chest wall and abdominal wall. They arise from the thoracic spinal nerves.
- Intercostal Arteries and Veins: These blood vessels supply blood to the chest wall and drain blood away from it.
Example Usage
You might hear a doctor say someone has "intercostal neuralgia," meaning they have nerve pain between their ribs. Or, a surgeon might describe an "intercostal incision," indicating an incision made between the ribs to access the chest cavity.
