Ribs Anatomy Quiz

Ribs Anatomy

Overview

• Ribs are a set of 24 bones that form the rib cage, providing protection for the chest cavity and its organs
• The rib cage consists of the sternum, ribs, and thoracic vertebrae

Types of Ribs

• True Ribs (1-7):
  • Attach directly to the sternum via costal cartilages
  • Form the anterior part of the rib cage
• False Ribs (8-10):
  • Attach to the 7th rib via costal cartilages
  • Form the middle part of the rib cage
• Floating Ribs (11-12):
  • Do not attach to the sternum or any other ribs
  • Form the posterior part of the rib cage

Rib Structure

• Each rib consists of:
  • Head: articulates with the thoracic vertebrae
  • Neck: connects the head to the body
  • Body: the main part of the rib
  • Costal cartilage: connects the rib to the sternum

Muscle Attachments

• Intercostal muscles: attach between the ribs and help with breathing
• Serratus anterior muscle: attaches to the ribs and helps with arm movement
• Latissimus dorsi muscle: attaches to the ribs and helps with arm movement and extension

Functions

• Protect the heart, lungs, and other organs in the chest cavity
• Provide attachment points for muscles involved in breathing and arm movement
• Help to expand and contract the chest cavity during breathing