Podcast
Questions and Answers
What comprises the bony thorax?
What comprises the bony thorax?
sternum, 12 pairs of ribs, 12 thoracic vertebrae
What is the proper name for that structure commonly called the 'breast bone'?
What is the proper name for that structure commonly called the 'breast bone'?
Sternum
Which bone classification is the sternum?
Which bone classification is the sternum?
Flat
Which three bony parts compose the sternum?
Which three bony parts compose the sternum?
Signup and view all the answers
Which part of the sternum is most superior?
Which part of the sternum is most superior?
Signup and view all the answers
What articulates with the articular facets located just lateral to the jugular notch?
What articulates with the articular facets located just lateral to the jugular notch?
Signup and view all the answers
The junction of which structures creates the sternal angle?
The junction of which structures creates the sternal angle?
Signup and view all the answers
Which part of the sternum is the elongated central portion?
Which part of the sternum is the elongated central portion?
Signup and view all the answers
Where on the sternum is the jugular notch located?
Where on the sternum is the jugular notch located?
Signup and view all the answers
What is the smallest part of the sternum?
What is the smallest part of the sternum?
Signup and view all the answers
Which part of the sternum is located at the level of T10?
Which part of the sternum is located at the level of T10?
Signup and view all the answers
With which part of the sternum does the first pair of ribs articulate?
With which part of the sternum does the first pair of ribs articulate?
Signup and view all the answers
Which classification refers to ribs that attach their costal cartilages directly to the sternum?
Which classification refers to ribs that attach their costal cartilages directly to the sternum?
Signup and view all the answers
Which classification refers to ribs that have no anterior attachments?
Which classification refers to ribs that have no anterior attachments?
Signup and view all the answers
Which classification refers to the eighth through twelfth pairs of ribs?
Which classification refers to the eighth through twelfth pairs of ribs?
Signup and view all the answers
What is the topmost superior portion of the sternum?
What is the topmost superior portion of the sternum?
Signup and view all the answers
What does the manubrium articulate with?
What does the manubrium articulate with?
Signup and view all the answers
What is the landmark on the top of the manubrium?
What is the landmark on the top of the manubrium?
Signup and view all the answers
Inferior portion of the manubrium is known as what?
Inferior portion of the manubrium is known as what?
Signup and view all the answers
Another name for the body of the sternum?
Another name for the body of the sternum?
Signup and view all the answers
What does the body of the sternum articulate with?
What does the body of the sternum articulate with?
Signup and view all the answers
True ribs are defined as which numbers?
True ribs are defined as which numbers?
Signup and view all the answers
Inferiorly, with what does the body of the sternum articulate?
Inferiorly, with what does the body of the sternum articulate?
Signup and view all the answers
What is the material used to connect false ribs (8-12)?
What is the material used to connect false ribs (8-12)?
Signup and view all the answers
Which ribs have no articulation?
Which ribs have no articulation?
Signup and view all the answers
What part of the vertebrae do ribs articulate with?
What part of the vertebrae do ribs articulate with?
Signup and view all the answers
What do we call the cartilage of the ribs?
What do we call the cartilage of the ribs?
Signup and view all the answers
Lower margins of the ribs sit at what vertebral level?
Lower margins of the ribs sit at what vertebral level?
Signup and view all the answers
Study Notes
Bony Thorax Composition
- The bony thorax consists of the sternum, 12 pairs of ribs, and 12 thoracic vertebrae.
Sternum Overview
- Commonly known as the "breast bone," the proper term is sternum.
- The sternum is classified as a flat bone.
- It is composed of three parts: the manubrium, body, and xiphoid process.
Sterner Structure and Features
- The manubrium is the most superior part of the sternum.
- Clavicles articulate with the articular facets located just lateral to the jugular notch on the manubrium.
- The sternal angle is formed by the junction of the manubrium and sternum body.
- The body of the sternum serves as the elongated central portion.
- The jugular notch is located at the superior border of the manubrium.
- The xiphoid process is the smallest part of the sternum, located at the level of T10.
Rib Classifications
- True ribs (1-7) attach their costal cartilages directly to the sternum.
- False ribs (8-12) do not attach directly to the sternum, using hyaline cartilage instead.
- Floating ribs (11 & 12) have no anterior attachments and do not articulate with the sternum.
Additional Sternum Details
- The manubrium is the topmost part of the sternum and articulates with the clavicles, forming the sternoclavicular joint.
- The landmark on top of the manubrium is known as the jugular notch.
- The inferior portion of the manubrium connects with the body at the sternal angle.
- The body of the sternum is also referred to as gladiolus and articulates with the true ribs and the xiphoid process.
Costal Cartilage
- The costal cartilage connecting false ribs is made of hyaline cartilage.
- Lower margins of the ribs sit at the vertebral levels of L2 and L3.
- Ribs articulate with thoracic vertebrae.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on the ribs and sternum with these flashcards. Each card covers key concepts, definitions, and classifications related to the bony thorax. Great for preparing for exams in Radiology or Anatomy!
