What provides an articulation point for tubercle of rib?

The tubercle of the rib articulates with the WHAT of each same-numbered vertebra. Posteriorly, they articulate with the bodies of the vertebrae T11 and T12, but they do not have tubercles and do not attach to the transverse processes of the vertebrae. Those two vertebrae therefore have no transverse costal facets.

What is the name of the cavity enclosing the spinal cord?

The spinal canal (or vertebral canal or spinal cavity) is the canal that contains the spinal cord within the vertebral column. The spinal canal is formed by the vertebrae through which the spinal cord passes. It is a process of the dorsal body cavity. This canal is enclosed within the foramen of the vertebrae.

What has articular facets for the ribs on their bodies and transverse processes?

Thoracic vertebrae make up the middle portion of the spinal column and can be distinguished by their facets for articulation with the ribs, one on each side of the vertebral body, and one on each transverse process.

What is the portion enclosing the nerve cord?

A & P 9 weeks

Which are typical ribs?

Ribs 3 to 9 are considered typical ribs. Major landmarks of a typical rib are the following: head, neck, tubercle, and body of a rib. The head of each rib is wedge-shaped and has two articular facets, which are separated by the crest of the head.

What is the function of rib cage?

The ribs are the bony framework of the thoracic cavity. The ribs form the main structure of the thoracic cage protecting the thoracic organs, however their main function is to aid respiration. There are twelve pairs of ribs. Each rib articulates posteriorly with two thoracic vertebrae by the costovertebral joint.

Which vertebrae carry the least weight on a human?

Cervical vertebrae have a small body, reflecting the fact that they carry the least amount of body weight. Cervical vertebrae usually have a bifid (Y-shaped) spinous process. The spinous processes of the C3–C6 vertebrae are short, but the spine of C7 is much longer.

Which vertebral curvatures are primary and secondary?

The vertebral column is curved, with two primary curvatures (thoracic and sacrococcygeal curves) and two secondary curvatures (cervical and lumbar curves).

Which are the true ribs?

The true ribs are the ribs that directly articulate with the sternum with their costal cartilages; they are the first seven ribs. However, the floating ribs are the ribs that do not articulate with the sternum at all; they are the distal two ribs. The true ribs articulate with the sternum by the sternocostal joints.

What do all ribs articulate posteriorly with?

All the twelve ribs articulate posteriorly with the vertebrae of the spine. Each rib forms two joints: Costotransverse joint – Between the tubercle of the rib, and the transverse costal facet of the corresponding vertebrae.

What is the weight-bearing portion of a vertebra called?

Body. The body is the disc-shaped anterior portion, and is the weight-bearing area of a vertebra.

Which ribs break most easily?

The middle ribs are most commonly fractured. Fractures of the first or second ribs are more likely to be associated with complications. Diagnosis can be made based on symptoms and supported by medical imaging. Pain control is an important part of treatment.

Which is part of the body provides articulation point for ribs?

two structures that provides an articulation point for the ribs. intervertebral foramina. openings providing for exit of spinal nerves. body and vertebral arch.

What is the articulation between ribs 11 and 12?

Ribs 11 and 12 have no neck, and only contain one facet, which is for articulation with their corresponding vertebrae. The majority of the ribs have an anterior and posterior articulation. Fig 1.2 – Articulations between a rib and its numerically corresponding vertebrae.

Where are the articulation points of the sternum?

Information. The sternum has three parts. The manubrium, at the superior end of the sternum, and wider than the rest of the bone, provides articulation points for the clavicles and for the costal cartilage extending from rib 1. The central, thin body provides articulation points for costal cartilage from ribs 2 through 7.

How are the ribs connected to the sternum?

Ten of the twelve ribs connect to strips of hyaline cartilage on the anterior side of the body. The cartilage strips are called costal cartilage (“costal” is the anatomical adjective that refers to the rib) and connect on their other end to the sternum. On an individual rib, one end has various processes, facets, and bumps.