Ribs And Sternum Flashcards
Which rib is the widest?
Rib 8/9
What are “true ribs” and which of the ribs is consider true ribs
Ribs 1-7 are considered true ribs b/c it has a direct connection to the sternum via its OWN costocartilage.
What are “false” ribs and which of the ribs is considered so?
Ribs 8-10 are considered false ribs b/c its directly connected to the sternum via the costocartilage of the 7th rib.
What Are “floating” ribs and which ones is considered false?
Ribs 11-12 are floating ribs b/c it does not have cartilage articulation.
Only have 1 connection w/t-spine at the body posteriorly.
also fits into the false rib category
Ribs 1-10 has how many articulations to the t-spine? What are those?
Has 2 connections:
- Demifacets articulate w/head of ribs (costoVERTEBRAL jt.)
- Transverse facet w/ tubercle of ribs (costoTRANSVERSE jt.)
Rib 11-12 has how many articulations with the t-spine? What are those articulations?
Only 1 articulation hence why they are considered as floating ribs:
1: only articulations is w/demifacet (costoVERTEBRAL)
Purpose of the ribs?
The ribs acts as protection for the heart, lungs and spleen.
What kind of bone is the sternum?
A thin, narrow, flat bone.
The sternum consist of how many divisions and what are they?
3 divisions:
- Manubrium (top division)
- Body ( middle division)
- Xiphoid process (inferior portion; found at T9-T10)
SID for sternum
Obliques: 40”
Lateral: 60-72”
kVp for sternum (mAs if known)
75-80 kVp @ 6-8 mAs
Describe the obliquity for a thin patient versus a thicker patient
Thin patient: more obliquity (20-25)
Thicker patient: less obliquity (15)
Breathing instructions for sternum?
Oblique: expiration (or breathing tech.)
Lateral: on inspiration ( to bring sternum anteriorly)
What is the costal groove?
Found on the body of the rib, it is a groove that houses blood vessels and nerves.
kVp for upper rib, breathing instruction, and patient position?
Upper rib:
70-75 kVp on inspiration and done ERECT per book
kVp for lower rib, breathing instruction and patient position?
Lower rib:
75-80kVp, expiration (like abdomen) and done RECUMBENT/SUPINE per book (allow diaphragm to rise and result in less abdomen)
What is the palpable landmark for sternum? There is more than 1.
- At the jugular notch (aka manubrial notch) found at T2-T3
- Sternal angle, found at T4-T5
The manubrium of the sternum articulates with what?
The manubrium articulates with the medial end of the clavicles, forming the sternoclavicular joint.
Define costocartilage
Short piece of cartilage where the ribs 1-10 articulates indirectly with the sternum.
The posterior end of the rib is also known as?
Vertebral end
The anterior end of the rib is also known as?
Sternal end
The area of forward angulation of the rib?
The “angle” portion of the rib
Distance difference b/w the vertebral end to the sternal End of the rib
The vertebral end (posterior end) of the ribs sits 3-5” higher than the sternal end( anterior end)
Facts about the 1st rib.
Most curved
Synarthrodial (immovable)
