The medial end is also known as the sternal end. It is quadrangular and articulates with the clavicular notch of the manubrium of the sternum to form the sternoclavicular joint. The articular surface extends to the inferior aspect for articulation with the first costal cartilage.
Where is the sternal end located?
The sternal end (sternal extremity) of the clavicle is triangular in form, directed medialward, and a little downward and forward; it presents an articular facet, concave from before backward, convex from above downward, which articulates with the manubrium sterni through the intervention of an articular disk.
Is the clavicle part of the sternum?
The sternum is a narrow, flat bone, forming the middle portion of the front of the chest. The top of the sternum supports the clavicles (collarbones) and its edges join with the costal cartilages of the first two pairs of ribs. The inner surface of the sternum is also the attachment of the sternopericardial ligaments.
What is a sternal end?
Sternal or medial end (extremitas sternalis) is the rounded end of the clavicle that articulates with the manubrium of the sternum. [
What is sternal anatomy?
Sternum. 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.
How is the collarbone attached?
Your collarbone, called the clavicle, connects to the shoulder blade at the acromioclavicular (AC) joint and to your chest bone, called the sternum, at the sternoclavicular (SC) joint. Ligaments attach the bones together to hold the AC joint together.
What does the sternal end of the clavicle articulate with?
The medial end, known as the sternal end of the clavicle, has a triangular shape and articulates with the manubrium portion of the sternum. This forms the sternoclavicular joint, which is the only bony articulation between the pectoral girdle of the upper limb and the axial skeleton.
What are the two ends of the clavicle called?
The orientation of the clavicle can be distinguished by its ends: a broad, flat acromial end (referred to as the lateral third); and a round pyramidal-like sternal end (referred to as the medial two-thirds). Each end has unique bony landmarks, depending whether the superior or inferior surface of the bone is viewed.
Why does my sternum stick out?
Pectus carinatum is a genetic disorder of the chest wall. It makes the chest jut out. This happens because of an unusual growth of rib and breastbone (sternum) cartilage . The bulging gives the chest a birdlike appearance.
Where is the clavicle bone?
Where is the clavicle? The clavicle is the bone that connects the breastplate (sternum) to the shoulder. It is a very solid bone that has a slight S-shape and can be easily seen in many people. It connects to the sternum at a joint with cartilage called the sternoclavicular joint.
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Where is the subclavian groove located?
Anatomical Parts Subclavian groove (groove for subclavius) is an elongated groove on the inferior surface of clavicle which gives attachment to the Subclavius.
What muscle is attached to the clavicle?
The clavicle is an S-shaped bone that is anchored by strong ligamentous attachments on both its medial and lateral ends. Muscular attachments to the clavicle include the sternocleidomastoid, pectoralis major, and subclavius muscles proximally and the deltoid and trapezius muscles distally.
What does the sternum do?
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.
Where is costal cartilage?
The costal cartilages are bars of hyaline cartilage that serve to prolong the ribs forward and contribute to the elasticity of the walls of the thorax. Costal cartilage is only found at the anterior ends of the ribs, providing medial extension.
What organs are behind sternum?
The thymus is a small organ located just behind the breast bone (sternum) in the front part of the chest.
How is the clavicle attached to the scapula?
The scapula articulates with the clavicle through the acromion process, a large projection located superiorly on the scapula forming the acromioclavicular joint. The scapula also articulates with the humerus of the upper arm to form the shoulder joint, or glenohumeral joint, at the glenoid cavity.
Which end of the clavicle connects to the acromion process?
The lateral end of the clavicle articulates with this projection on the scapula, the acromion, forming the acromio-clavicular joint. Apart from this one very movable bony linkage, the scapula is held onto the body entirely by muscles.
What are the bone markings of the clavicle?
LocationMarkingMedial end of clavicleSternal facetLateral end of clavicleAcromial facetAnterior end of scapulaSuperior angleInferior end of scapulaInferior angle
Is the clavicle part of the neck or chest?
In humans the two clavicles, on either side of the anterior base of the neck, are horizontal, S-curved rods that articulate laterally with the outer end of the shoulder blade (the acromion) to help form the shoulder joint; they articulate medially with the breastbone (sternum).
Is the clavicle bone part of the axial skeleton?
The axial skeleton includes the skull and all the cranial bones, the spine, the ribs and the hyoid bone. … The pelvis, femur, fibula, tibia and all of the foot bones as well as the scapula, clavicle, humerus, radius, ulna and all of the hand bones are classified as appendicular.
What is the space between the clavicle called?
The suprasternal notch, also known as the fossa jugularis sternalis, or jugular notch, or Plender gap is a large, visible dip in between the neck in humans, between the clavicles, and above the manubrium of the sternum.
Which region of the clavicle is known as the Acromial end?
The conoid tubercle is found on the lateral end (acromial extremity) of the clavicle, and is located posteriorly. It is the attachment point for the conoid ligament, which attaches to the coracoid process of the scapula and reinforces the joint between these two bones.
Does the clavicle articulate with the humerus?
It is supported by the clavicle, which also articulates with the humerus (arm bone) to form the shoulder joint. The scapula is a flat, triangular-shaped bone with a prominent ridge running across its posterior surface.
Is collarbone and clavicle the same?
Your collarbone (or clavicle) is the bone that runs horizontally between the top of your breastbone (sternum ) and shoulder blade (scapula). You can feel your collarbone by touching the area between your neck and your shoulder. A broken collarbone, also called a clavicle fracture, is when this bone breaks.
What's the most painful bone to break?
- 1) Femur. The femur is the longest and strongest bone in the body. …
- 2) Tailbone. You could probably imagine that this injury is highly painful. …
- 3) Ribs. Breaking your ribs can be terribly distressing and quite painful. …
- 4) Clavicle.
Why does my clavicle hurt?
Collarbone pain can be caused by a fracture, arthritis, a bone infection, or another condition related to the position of your clavicle. If you have sudden collarbone pain as the result of an accident, sports injury, or other trauma, get to an emergency room.
How can you tell the difference between a right clavicle and a left clavicle?
Generally, the right clavicle occurs on the right side of the body while the left clavicle occurs on the left side of the body. Thus, there is no anatomical or functional difference between right and left clavicle. In brief, the clavicle or the collarbone is a long bone, which occurs directly above the first rib.
What fascia is attached to subclavian groove?
The rest of this surface is occupied by a groove, which gives attachment to the Subclavius; the coracoclavicular fascia, which splits to enclose the muscle, is attached to the margins of the groove.
What is a costal groove?
costal groove. the groove on the inner surface of the inferior border of the body of the rib. it accommodates the intercostal neurovascular bundle; the costal groove provides a protective function for the intercostal neurovascular bundle, ribs 1-7.
What passes through subclavian groove?
The upper surface of the body of the first rib is marked by two shallow grooves, separated from each other by a slight ridge prolonged internally into a tubercle, the scalene tubercle, for the attachment of the Scalenus anterior; the anterior groove (groove for subclavian vein) transmits the subclavian vein, the …
