Which of the following is a powerful vasoconstrictor?

(1) Angiotensinogen

(2) Angiotensin I

(3) Angiotensin II

(4) Rennin

(1) Adrenal medulla

(2) Adrenal cortex

(3) Blood vessels

(4) Both B and C

(1) Na+

(2) Water

(3) Na+ and water

(4) Na+, urea, water

(1) Renin

(2) Rennin

(3) Rumen

(4) Rinun

(1) ANS

(2) CNS

(3) PNS

(4) Afferent arterioles

(1) Atria of heart

(2) Ventricles of heart

(3) Right atrium only

(4) Left atrium only

(1) Decrease of blood pressure

(2) Vasodilation

(3) Increasing the diameter of vessels

(4) All of these

(1) ANF mechanism

(2) Counter-current pathway

(3) Both A and B

(4) Micturition

(1) By stretching of the urinary bladder

(2) By relaxing of urniary bladder

(3) By reduction in the size of urinary bladder

(4) By contraction of urinary bladder

(1) Contraction of smooth muscles of the bladder

(2) Simultaneous relaxation of urethral sphincter

(3) Relaxation of smooth muscels of the bladder

(4) Both B and C