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What is the manubrium of the sternum?

What is the manubrium of the sternum?

The manubrium (manubrium sterni) is quadrangular shaped with four borders. The clavicular notches of the sternum articulate with the medial end of each clavicle to form the sternoclavicular joints. The manubrium sterni also articulates with the costal cartilages of the 1st pair of ribs.

What vertebral level is the manubrium notch?

The manubrium is the superior part of the sternum lying at the level of T3-T4 vertebrae. It forms the superior wall of the anterior mediastinum and its superior border also contributes to the superior thoracic aperture (thoracic inlet).

Where is the manubrium of the sternum?

The manubrium (Latin for “handle”) is the broad upper part of the sternum. It has a quadrangular shape, narrowing from the top, which gives it four borders. The suprasternal notch (jugular notch) is located in the middle at the upper broadest part of the manubrium. This notch can be felt between the two clavicles.

What is the sternum to the spine?

The breastbone is ANTERIOR to the spine. The sternum is ANTERIOR to the heart.

What organ is behind the sternum?

The thymus is a small organ located just behind the breast bone (sternum) in the front part of the chest.

What is the main function of the sternum?

Your sternum, along with your ribs, works to protect the organs of your torso, such as your heart, lungs, and chest blood vessels. Support. Your sternum also provides a connection point for other parts of your skeletal system, including your collarbone and most of your ribs.

What is the main function of manubrium?

The manubrium is the most superior region of the sternum and articulates with the clavicles or collarbones and the first pair of ribs. The manubrium is the thickest portion of the sternum as it carries the greatest physical load.

What lies behind the manubrium?

The superior mediastinum is defined anteriorly by the manubrium, which lies 5 cm anterior to the vertebral bodies. The suprasternal notch corresponds to a T2–3 level, and the sternal angle lies at the T4–5 level. The sternohyoid, sternothyroid, and sternocleidomastoid muscles originate at the manubrium.

Why does the area around my sternum hurt?

Costochondritis is the most common cause The most common cause of sternum pain is a condition called costochondritis. This occurs when the cartilage that connects your ribs to your sternum becomes inflamed. Symptoms of costochondritis include: sharp pains or aches on the side of your sternum area.

Is your sternum connected to the spine?

A typical rib cage has 24 ribs. Each rib extends from the spinal cord and wraps around the body in a semicircle. The ribs encircle vital organs, such as the lungs, and connect to the costal cartilage in the front of the body. This hard cartilage extends from the end of each rib and connects to the sternum.

Why does the middle of my sternum hurt?

What is the bone at the bottom of your sternum?

The xiphoid process is a tiny bone structure located at the center of the chest, just below the lower part of the sternum. At birth, the xiphoid process is formed from cartilage that eventually develops into bone.

What is the purpose/function of the manubrium?

It connects to the ribs via cartilage and forms the front of the rib cage, thus helping to protect the heart, lungs, and major blood vessels from injury. Shaped roughly like a necktie, it is one of the largest and longest flat bones of the body.

How many pairs of ribs are attached to the manubrium?

Manubrium How many pair of true ribs: 7 pair Floating ribs are considered the last: 2 pairs False ribs are considered the last: 5 pairs Head of rib is located: Posterior, vertebral, dorsal Which end of rib is inferior:

What bone does the manubrium articulate with?

Inferiorly, the manubrium articulates with the body of the sternum, forming the sternal angle. This can be felt as a transverse ridge of bone on the anterior aspect of the sternum. The sternal angle is commonly used as an aid to count ribs, as it marks the level of the 2nd costal cartilage.

What is the joint between the manubrium and clavicle?

The sternoclavicular joint or sternoclavicular articulation is the joint between the manubrium of the sternum and the clavicle bone. It is structurally classed as a synovial saddle joint and functionally classed as a diarthrosis and multiaxial joint. It is composed of two portions separated by an articular disc of fibrocartilage. The bone areas entering into its formation are the sternal end of the clavicle, the upper and lateral part of the sternum,, and the cartilage of the first rib, visible