What is the sternum bone?
The sternum, or breastbone, is a flat bone at the front center of the chest. The ribs and sternum make up what is called the 'ribcage.' ... The sternum is made up of three parts called the manubrim, the body, and the xiphoid process.
Is the breastbone anterior or posterior to the spine?
The position of the breastbone with relation to the spine is posterior (dorsal). The breastbone is located anterior to (ventral to) the spine. The heart is located anterior to (ventral to) the breastbone. The lungs are located posterior to (dorsal to) the heart. Is the sternum posterior to the spine? Is the sternum inferior to the nose?
What muscle attaches to the sternum?
Body of Sternum. The sternocostal head of the pectoralis major muscle attaches the sternum, on the lateral sides of its anterior surface. The posterior surface of the body gives rise to the transversus thoracis muscle (innervated by intercostal nerves). The lower part of the bone is narrower and articulates with the xiphoid process.
What bone articulates with the clavicle and sternum?
It is a flat bone that articulates with the clavicle and the costal cartilages of the upper 7 ribs (true ribs), while the 8th, 9th and 10th ribs ( false ribs) are indirectly attached with sternum via costal cartilage of the ribs above. The bone is divided into three parts: The manubrium. The body of the sternum (mesosternum).
What is behind sternum?
The thymus is a small organ located just behind the breast bone (sternum) in the front part of the chest.
Is the sternal anterior or posterior?
The sternum is the bone that lies in the anterior midline of our thorax. It forms part of the rib cage and the anterior-most part of the thorax. Its functions are to protect the thoracic organs from trauma and also form the bony attachment for various muscles.
What is inferior to the sternum?
Located at the inferior end of the sternum is the pointed xiphoid process.
What are the bones of the sternum?
Sternum Bone AnatomyThe sternum (pronounced ˈstər-nəm) is located in the center of the anterior thoracic wall and is also known as the breastbone.It consists of three segments, the manubrium, body, and xiphoid process. The segments fuse to form a long, flat bone.
Is the spine posterior to the sternum?
The spine is posterior (or dorsal) to the sternum. The elbow is proximal to the wrist.
What is distal to the sternum?
The xiphoid process (xiphisternum/xiphoid) is triangular shaped and forms the distal-most part of the sternum. The size and shape of the xiphoid process are highly variable. It is mostly cartilaginous until the age of 40 and becomes completely calcified by the age of 60.
What is right below the 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 most inferior part of the sternum?
The inferior tip of the sternum is called the xiphoid process, meaning “sword shaped.”
Is the sternum lateral to the ribs?
The ribs are lateral to the sternum. Lateral means away from midline (toward the sides) of the body. The sternum lies at the central portion of the chest.
How many bones are in the sternum?
The sternum is just one bone. It is a very large and flat bone that forms part of the ribcage. It is also called the breastbone. Your ribs are attached to your sternum.
Which of the following is not a bone of the sternum?
The structure that is not a component of the sternum is the (c) Costal facet. The costal facet is a feature of the thoracic vertebrae and is a site of articulation between the vertebrae and the ribs. The manubrium is the most superior aspect of the sternum, while the xiphoid process is the most inferior aspect.
What type of bone is the clavicle?
long boneEven though it is classified as a long bone, the collarbone has no medullary cavity (marrow cavity) like other long bones, though this is not always true. It is made up of spongy cancellous bone with a shell of compact bone. It is a dermal bone derived from elements originally attached to the skull.
Is the sternum posterior to the heart?
The heart is located directly behind the sternum, between the lungs. When talking about an anatomical structure that appears behind another anatomical structure of the body, the word posterior is used. Therefore, the heart is posterior to the sternum.
What body parts are anterior?
Anterior is also known as anatomical position, anterior-posterior, and an example is the anterior refers to the front of the body, so the face and abdomen are considered anterior body parts.
What structure is anterior to the heart?
The sternum lies anterior to the heart.
What is the anterior and posterior?
Anterior or ventral - front (example, the kneecap is located on the anterior side of the leg). Posterior or dorsal - back (example, the shoulder blades are located on the posterior side of the body). Medial - toward the midline of the body (example, the middle toe is located at the medial side of the foot).
Where is the sternum located?
The bottom line. The sternum is a long, flat bone that’s located in the middle of your chest. It provides both support and protection for your torso. Several conditions can directly affect your sternum, leading to chest pain or discomfort.
What are the parts of the sternum?
The sternum has three parts: Manubrium. This is the top part of your sternum. Your collarbone and your first set of ribs connect here. The bottom of the manubrium shares a border with the body of the sternum. Your second set of ribs connects at this point. Body.
What can cause sternum pain?
There are a variety of conditions that can affect your sternum, leading to pain and discomfort. Let’s dive deeper into some of the most common causes of sternum pain.
What is the condition where the cartilage connects the ribs to the sternum?
Costochondritis is when the cartilage that connects your ribs to your sternum becomes inflamed. This can be caused by an injury or from a muscle strain, arthritis, or infection. If you have costochondritis, the main symptom is chest pain or tenderness.
Why does my sternum hurt?
The most common causes of sternum pain are musculoskeletal issues. However, there are other possible causes that aren’t related to injuries of the muscles or bones. Other causes can include: lung conditions like pleurisy, pneumonia, or pulmonary embolism. heart conditions such as angina, pericarditis, or heart attack.
What is the joint where the collarbone meets the sternum?
The sternoclavicular joint is the area where your collarbone meets your sternum. Although uncommon, sometimes you can develop joint problems in this area due to injury, arthritis, or infections.
How to treat a collarbone injury?
a bump or lump that you can feel in the affected area. In mild to moderate cases, a collarbone injury is often treated with: medications to ease pain and swelling. support using an arm sling. physical therapy exercises. More severe injuries may require surgery.
What are the parts of the sternum?
The sternum is made up of three parts called the manubrim, the body, and the xiphoid process. In adults, the sternum portions are fused. The top of the sternum is the manubrim, or handle. It is connected to the first two ribs and is not completely rigid. The body, also called the blade or gladiolus, is right in the middle of the sternum.
What is the sternum?
Sternum. The sternum, or breastbone, is a flat bone at the front center of the chest. The ribs and sternum make up what is called the ‘ribcage.’. The ribcage protects the lungs, blood vessels, and heart, along with parts of the spleen, stomach, and kidneys from traumatic injury.
Where is the Gladiolus?
The body, also called the blade or gladiolus, is right in the middle of the sternum. It connects to the third through seventh ribs directly and the eighth through tenth ribs indirectly. The xiphoid process is the bottom tip of the sternum.
