Question

what is medulla explain in 50words

Answer 1

Medulla is a part of hind brain (which is located in the Brain).

Medulla controls involuntary actions in our body.

for examples, blood pressure, salivations and vomiting etc.

Answer 2

Inner lighter region of kidney it is made up of henle loop of nephron and collecting duct which is not part of nephron.
Renal pelvis is towards the concave side of kidney that is side is funnel shaped and kept occult renal pelvis from where ureter starts medulla project into pelvis and renal papillae.