The major bony components of the thorax are the sternum, thoracic vertebrae and ribs. These bony components are in conjunction with intervertebral discs and costal cartilage.Know More
The top of the thorax contains the sternum, which can also be referred to as the breastbone. This is a flat bone that helps to protect the rest of the thorax. It is a long, sword shaped bone with a piece of cartilage on the end called the xiphoid process. It is located in between the two collarbones.
Thoracic vertebrae are similar to the lumbar vertebrae that are located in the back. There are 12 vertebrae in the thoracic system. They work together with the sternum to hold the ribs into place and are there for the protection of the organs that are in the ribcage system. The way these vertebrae articulate, or move, is important to the way that the ribs move.
There are 12 ribs in the thorax. They are resilient and lightweight, making them ideal for the organ protection they provide. There are true ribs, false ribs and floating ribs. True ribs are connected to the sternum with costal cartilage. False ribs are only attached to other ribs and do not ever directly touch the sternum. Floating ribs are only connected to the thoracic vertebrae and "float" in the thorax area.Learn more about Zoology
Floating ribs are the eleventh and twelfth pair of ribs which are only connected to a person's backbone and not to the sternum. They're not even connected to other ribs, as the false ribs are. In some people, the tenth pair of ribs are also floating ribs.Full Answer >
Flat bones in the human body include the ribs, sternum (breastbone), scapula (shoulder blade), pelvic girdle and many of the 29 bones that make up the skull. Flat bones act as protection for essential organs or as attachment points for major muscle groups.Full Answer >
According to the BBC, all ribs are fragile, but floating ribs are especially easily broken because they only attach in one place, to the spine and not to the sternum. However, the real danger is that a fracture to these ribs can cause damage to other internal organs, states SportsMD.Full Answer >
In humans, seven pairs of ribs are directly connected to the sternum, commonly known as the breast bone. The ribs that are designated one to seven are attached to the breast bone by their costal cartilages. These ribs are also referred to as "true ribs."Full Answer >