Thorax

Question 1

Somites

Answer 1

Sclerotome- Vertebrae and ribs
Dermatome- Skin
Myotome- Muscle

Question 2

Axial Skeleton Muscle

Answer 2

Skull, Vertebral Column, Thoracic cage

Question 3

Structure of Vertebrae

Answer 3

Body-Weight
Arch- Ligament attachment
Forumen- spinal cord
Lamine- allows connection to other vertebra and muscles
Pedicle- allows connections to other vertebra and muscles

Question 4

Sternum

Answer 4

Manubrium, Body, Xiphoid Process

Question 5

Landmarks of Sternum

Answer 5

Jugular Notch, Sternal Angle, Xiphisternal Joint

Question 6

Ribs

Answer 6

True Rib: 1-7
False Ribs: 8-12
Floating Ribs 10-12

Question 7

Structures of Rib

Answer 7

Head- connects with vertebral body by two facets
Tubercle- connects with transverse process of thoracic vertebra
Shaft- bulk of rib
Costal Groove- located inferior boarder, houses the intercostal nerves and vessels

Question 7

Thoracic Inlet

Answer 7

Passage of trachea, esophagus, vessels, and nerves along with major blood supply to head, neck and upper libs

Question 8

Thoracic Outlet

Answer 8

More spacious, passage of IVC, esophagus and aorta, diaphragm located, lots of nerves

Question 9

Intercostal Space

Answer 9

Remnant of Somites
Segmentation
Muscle that move ribs
Nerve, arteries, and veins that support blood supply between ribs
each rib has there own set
Intercostal aarteries wrap around the front from back side using body wall

Question 10

Vasculature of wall

Answer 10

Right Side:
Intercostal Veins Drain into azygos vein then to SVC

Left Side:
Accessory hemiazygous and Hemiazygos veins that drain ithen drain into the azygous vein