True about diaphragm is
- Develops from the septum transversum and cervical myotomes
- Receives a nerve supply from phrenic nerve only
- The inferior vena cava passes through the diaphragm at the level of the T12 vertebra
- The aorta passes through the diaphragm at the level of the T8 vertebra
The Correct option is A
Explanation with High Yield Facts:
The diaphragm develops in the neck and hence receives its nerve supply from the cervical spinal cord (C4-C5). It is made up of structures arising from the septum transversum, pleuroperitoneal membranes, the dorsal mesentery and body wall. The septum transversum forms the central tendon. The motor nerve supply arises from the phrenic nerve. The sensory nerve supply is from the lower six intercostal nerves. The IVC, oesophagus and aorta pass through the diaphragm at the levels of T8, T10 and T12 respectively.
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