RTE 1503 Unit 7 Bony Thorax || Already Graded A+.

RTE 1503 Unit 7 Bony Thorax || Already Graded A+.


The Bony Thorax correct answers Main functions:
Serve as an expandable chamber for breathing
Protect the heart & lungs
Protect other organs such as the liver, spleen, & kidneys


The Bony Thorax Consist of: correct answers *Sternum (anterior)
*Thoracic vertebrae (posterior)
*Ribs (12 pairs)


Sternum correct answers Thin & narrow bone (FLAT BONE) about 7" in length (average adult)
3 Main divisions:
-Manubrium
-Body
-Xiphoid


Manubrium correct answers Jugular notch
2 clavicular notches
2 costal whole facets (rib 1)
2 costal demi facets (rib 2)


Body correct answers 2 costal demi facets (rib 2)
8 costal whole facets (ribs 3-6)
2 costal demi facets (rib 7)


Xiphoid correct answers -2 costal demi facets (rib 7)

, Thoracic Vertebrae correct answers - is part of vertebral column & bony thorax, it has
12 vertebrae
Main parts are the (Body, Vertebral Arch and Transverse Processes)


Thoracic Vertebrae (irregular Bones) correct answers -are (Irregular bones) and are stacked
with intervertebral disks (cartilage)
between the bodies.


Body of Thoracic Vertebrae correct answers - thick, anterior portion. Contains facets and/or demi
facets for articulation with the ribs.


Vertebral Arch of Thoracic Vertebrae




Transverse Processes correct answers -thin, posterior ring of bone


-- (2, one on each side) - extend laterally from the vertebral arch. The transverse processes of the
first 10 vertebrae have facets for articulation with the ribs.


Ribs (Flat Bones) correct answers -Curved, narrow bones that vary in length
24 Ribs (12 pairs);
Main parts:
*Vertebral (Posterior)
*Shaft (Body)
*Sternal (Anterior)