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Questions and Answers
What is the shape of the clavicle bone?
What is the shape of the clavicle bone?
- Straight and rectangular
- Triangular and bulky
- Curved and S-shaped (correct)
- Circular and hollow
At what stage of development does the clavicle begin to ossify?
At what stage of development does the clavicle begin to ossify?
- At birth
- Around 5-6 weeks after conception (correct)
- During childhood
- During adolescence
What is the primary function of the clavicle?
What is the primary function of the clavicle?
- To protect the heart and lungs
- To serve as a strut between the scapula and sternum (correct)
- To facilitate movement of the shoulder blade
- To provide a joint for the upper limb
Which of the following muscles does not attach to the clavicle?
Which of the following muscles does not attach to the clavicle?
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What is the purpose of the clavicle in transmitting forces?
What is the purpose of the clavicle in transmitting forces?
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How many primary centers of ossification does the clavicle have?
How many primary centers of ossification does the clavicle have?
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Study Notes
Clavicle Structure
Overview
The clavicle, also known as the collarbone, is a long bone located between the shoulder blade (scapula) and the breastbone (sternum).
Shape and Curvature
- The clavicle is a curved, S-shaped bone that forms the anterior (front) part of the shoulder girdle.
- It has a double curve, with the lateral (outer) end being more curved than the medial (inner) end.
Ossification
- The clavicle is the first bone to ossify (harden) in the fetus, around 5-6 weeks after conception.
- It ossifies from two primary centers, one medial and one lateral, which fuse together during childhood.
Function
- The clavicle serves as a strut between the scapula and sternum, providing a attachment site for muscles and ligaments.
- It helps to transmit forces from the upper limb to the axial skeleton.
Attachments
- The clavicle has several important attachments, including:
- Ligaments: coracoclavicular, costoclavicular, and sternoclavicular
- Muscles: deltoid, pectoralis major, and trapezius
Clavicle Structure
Overview
- The clavicle is a long bone located between the shoulder blade (scapula) and the breastbone (sternum).
- It forms the anterior (front) part of the shoulder girdle.
Shape and Curvature
- The clavicle has a curved, S-shaped structure.
- It has a double curve, with the lateral (outer) end being more curved than the medial (inner) end.
Ossification
- The clavicle is the first bone to ossify (harden) in the fetus, around 5-6 weeks after conception.
- It ossifies from two primary centers, one medial and one lateral, which fuse together during childhood.
Function
- The clavicle serves as a strut between the scapula and sternum.
- It provides a attachment site for muscles and ligaments.
- It helps to transmit forces from the upper limb to the axial skeleton.
Attachments
- The clavicle has several important attachments, including:
- Ligaments: coracoclavicular, costoclavicular, and sternoclavicular.
- Muscles: deltoid, pectoralis major, and trapezius.
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Description
Learn about the anatomy and development of the clavicle, also known as the collarbone, including its shape, curvature, and ossification process.
