You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Lesser sac of stomach is bounded by -a) Posterior wall of stomachb) Visceral surface of spleenc) Under surface of liverd) Greater omentum and explain in detail?
Boundaries of the lesser sac are:-


Anterior wall:- a Caudate lobe of the liver, stomach, lesser omentum, and 2nd layer of the greater omentum.
Posterior wall:- 3rd layer of greater omentum, and structures forming stomach bed (transverse colon, transverse mesocolon, diaphragm, left kidney, left suprarenal gland, pancreas, and splenic vessels).
Right border :- Right free margin of greater omentum and floor of epiploic foramen.
Left border:- Left free margin of greater omentum; gastrosplenic, lino renal and gastrophrenic ligaments.
Upper border:- a reflection of the peritoneum from the esophagus to diaphragm.
Lower border:- Continuation of 2nd and 3rd layers of the greater omentum.