External intercostal muscle function, origin, insertion
Understand the Problem
The question is asking about the external intercostal muscles, specifically their function, origin, and insertion points. This involves understanding the anatomical details related to these muscles, such as where they start (origin), where they attach (insertion), and what role they play in respiratory mechanics.
Answer
Origin: inferior borders of ribs 1-11. Insertion: superior borders of ribs below. Function: elevate ribs for inhalation.
External intercostal muscles originate from the inferior borders of the first to eleventh ribs and insert into the superior borders of the ribs immediately below. They function to elevate the ribs, aiding in inhalation.
Answer for screen readers
External intercostal muscles originate from the inferior borders of the first to eleventh ribs and insert into the superior borders of the ribs immediately below. They function to elevate the ribs, aiding in inhalation.
More Information
The external intercostal muscles are critical in the process of breathing by facilitating rib elevation, which increases the thoracic cavity volume, aiding in inhalation.
Tips
A common mistake is confusing the external intercostal muscles with the internal intercostal muscles, which have opposite functions in respiration.
Sources
- External intercostal muscles - Kenhub - kenhub.com
- External Intercostal Muscles - GetBodySmart - getbodysmart.com
- External intercostal muscles - Wikipedia - en.wikipedia.org
AI-generated content may contain errors. Please verify critical information
