THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -So, the correct answer is ‘renin’.

Detailed explanation-2: -Renin cleaves the N-terminal of angiotensinogen and leads to the formation of angiotensin I. This enzyme is expressed on plasma membranes of vascular endothelial cells, primarily in the pulmonary circulation. [14] It cleaves the two amino acids from the C-terminal of angiotensin I to make the peptide angiotensin II.

Detailed explanation-3: -Angiotensin I is converted to angiotensin II by a serine protease in human detrusor smooth muscle.

Detailed explanation-4: -Renin catalyzes the conversion of a plasma protein called angiotensinogen into a decapeptide (consisting of 10 amino acids) called angiotensin I.