Anatomy #2 Flashcards
What does the thorax consist of?
12 Thoracic Vertebrae (and their IVDs) 12 Pairs of ribs the sternum -manubrium -body -xiphoid process
Where do all the ribs articulate with posteriorly?
Vertebral column
What are sternabrae?
Sternabrae are the four plates of the sternum.
Begin fusing from teens to about 25
What is the most superior portion of the sternum?
Manubrium
What is located between the articular facets of clavicular notch where the manubrium attaches to the clavicle?
Jugular notch
What is the land mark for the second rib?
Sternal Angle
What is the joint called that connects the manubrium to the rest of the sternum and what is it’s aka?
manubriosternal joint (sternal angle) AKA Angle of Louis
What articulates along the side of the body of the sternum?
Costal notches for the articulation with costal cartilage
What is the thin process inferior to the body of the sternum?
Xiphoid
At what age does the xiphoid fuse with the rest of the sternum and what is it like at birth?
40
Cartilagenous at birth
What is the aka for the body of the sternum?
Gladiolus
Which ribs are known as true ribs?
The first 7 ribs are know as true ribs
Which ribs are known as the false ribs?
Ribs 8-12
Which ribs have a direct connection the sternum?
The true ribs or first 7
Which ribs are known as the floating ribs?
11 and 12
Which ribs are considered typical ribs?
2-10 ribs
What are the characteristics of a typical rib?
Head, Neck, Tubercle and shaft
Which rib is the longest rib?
Rib 7
What does the head of a typical rib consist of?
An superior and inferior facet
How many vertebral bodies does the head of a typical rib articulate with?
2
Where is the neck located on a typical rib?
Between the head and the tubercle
What does the tubercle of a typical rib articulate with?
Articulates with the transverse process of the vertebrae
Where is the costal groove located on a typical rib and what passes through it?
It is located on the shaft and the costal nerves pass through
What does the superior costal facet on the vertebral body articulate with?
Articulates with the head of the rib of the same number
What does the inferior costal facet on the vertebral body articulate with?
articulates with the head of the inferior rib
What does the transverse costal facet on the vertebral body articulate with?
Articulate with the tubercle of the rib of the same number.
What ribs are known as “atypical”?
Ribs: 1, 11, 12
Which rib is the shortest, broadest and the most curvature of the true ribs?
Rib 1
What is the difference between Rib 1 and ribs 11-12?
Rib 1 has TVP and Ribs 11-12 do not
What makes Rib 1 Atypical?
Scalene tubercle/ grooves for the subclavian artery and vein.
What makes Ribs 11-12 Atypical?
floating ribs/ small facet on the head of the rib/ no neck or tubercle
What does a typical vertebral body consist of?
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