Rib Cage Flashcards
What are the functions of thoracic cage
1-protection of hearts and lungs and thymus and structures in thoracic cavity
2-attachment point for muscles involved in (1) breathing, (2) maintaining the position of the vertebral column, and (3) movements of the pectoral girdle (clavicles and scapulae) and upper limbs.
Which ones are true ribs
1-7
Red ones
Which ones are called false ribs
8-12
Green ones
Which ones are called floating ribs
11,12
Why are 1-7 ribs called true ribs
the true ribs are connected to the sternum by separate cartilages.
Why are 8-12 pribs called false ribs
because they do not attach directly to the sternum.
Why are 11-12 ribs called floating
because they have no connection with the sternum.
The costal cartilages of ribs — to — fuse together before reaching the sternum.
The costal cartilages of ribs 8–10 fuse together before reaching the sternum.
Name the parts
The typical rib consists of a —— ,—— and ——.
The typical rib consists of a head, neck and body
the crest of the head?
The head has two articular facets, which are separated by a wedge of bone, known as the crest of the head.
Tubercle
The tubercle is a bony prominence located at the junction between the neck and body which projects posteriorly.
Tubercle consists pf how many parts? Explain
1-smooth articular part
which articulates with the transverse process of the associated vertebra
2-nonarticular surface
roughened non articular part which forms the attachment of the costotransverse ligament.
Explain the morphology of the rib
Thin
Flat
Curved
Where does the curve of the rib become most prominent?
Costal angle
Wheres the costal angle
Function of costal angle
Attachment for some of the deep back muscles to the ribs.
Costal groove
Offers some protection and a path for the neurovascular bundle to follow.
What does the internal surface of typical rib contain?
The internal surface os concave and contains costal groove
Where is Tubercle
Where is tubercle
Which parts the costal GROOVE
Where is tubercle
Which one is the costal groove
1,2,3,4?