The diaphragm primarily spans the vertebral levels of T8 to T10. The central tendon of the diaphragm is located at approximately the level of T8, while the muscular portions extend to about T10. Additionally, the diaphragm's right dome is typically higher than the left due to the presence of the liver.
The kidneys are in the retroperitoneal space, located inferior to the diaphragm, lateral to the vertebral column, and deep to the peritoneal cavity.
The crura of the diaphragm are muscular bands that attach the diaphragm to the vertebral column. There are two crura: the right crus which is longer and the left crus which is shorter. They play a crucial role in supporting and stabilizing the diaphragm during respiration.
S3
In the human the level of cricoid is the 6th cervical vertebra.
The crura of the diaphragm are muscular extensions that originate from the lumbar vertebrae and form the right and left pillars of the diaphragm. They are located posterior to the central tendon and extend downwards, anchoring the diaphragm to the vertebral column. The right crus arises from the bodies of the first three lumbar vertebrae, while the left crus arises from the bodies of the first two lumbar vertebrae. Together, they help support the diaphragm's function in respiration.
The hyoid bone is at the level/in line with the third cervical (C3) vertebra.
The diaphragm attaches to the bottom six ribs, ribs 7-12.
at the level of the inter-vertebral disc between T4 and T5.
cervical vertebral c5-6
Fourth thoracic
The bifurcation (splitting) of the common carotid artery is in line with/at the level of the intervertebral disc between the third and fourth cervical vertebral (between C3 and C4).
The thoracic cavity contains the lungs, heart, and major blood vessels, as well as other structures such as the esophagus and trachea. It is located superior to the abdominal cavity and is separated from it by the diaphragm. The thoracic cavity is surrounded by the rib cage and is situated anterior to the vertebral cavity, which houses the spinal cord.