Fourth costal cartilage

About the fourth costal cartilage of the cat

Fourth costal cartilage is a cartilage of the chest (thorax), one on each side of the body. Its name in the Nomina Anatomica Veterinaria is Cartilago costalis IV. You can turn it above, see it in place in the chest of the cat, and open it inside the whole animal in Vetomica.

Where it runs from and to

What this structure is anchored to at each end, and what that lets it do.

Origin

Ventral end of its rib.

Insertion

Sternum for the sternal ribs, or the cartilage in front of it for the asternal ribs.

Action

Hyaline cartilage that carries the rib to the sternum and gives the chest wall its spring.

Written for Vetomica in its own words from the standard reference anatomy of the cat; the books it was checked against are listed below.

Measured on the specimen

What the fourth costal cartilage is in contact with in the model itself, with the share of the other structure’s surface it covers. A contact is not always a joint: bones that simply lie against one another are in this list too.

• Rib 47%
• Sternebra 350%
• Sternebra 438%

Measured on the left side.

Terminology

English

Fourth costal cartilage

Latin (NAV)

Cartilago costalis IV

Status

A valid term in the Nomina Anatomica Veterinaria

Questions about the fourth costal cartilage

What is the Latin name of the fourth costal cartilage?

In the Nomina Anatomica Veterinaria, the fourth costal cartilage is called Cartilago costalis IV.

Where is the fourth costal cartilage of the cat?

Fourth costal cartilage is a cartilage of the chest (thorax), one on each side of the body.

Where does the fourth costal cartilage originate and insert?

Origin: Ventral end of its rib. Insertion: Sternum for the sternal ribs, or the cartilage in front of it for the asternal ribs.