juxta medullary nephron has long loop situated in

Correct Answer: A

Rationale: Juxtamedullary nephrons' long loops extend into medulla, not cortex, pyramid (part), or all. This locates concentration site, critical for osmolarity, contrasting with cortical nephrons.

Correct Answer: D

Rationale: Prostate (reproductive) isn't urinary, unlike urethra, ureter, bladder. This excludes accessory organs, key for system scope, contrasting with urinary structures.

Correct Answer: C

Rationale: Micturition reflex centers in sacral cord (S2-S4), not kidney, cerebrum, or bladder. This locates reflex control, key for voiding, contrasting with higher/organ sites.

Correct Answer: D

Rationale: Peritubular capillaries receive blood from efferent arteriole, not vein, glomerulus, or afferent. This specifies post-glomerular flow, key for reabsorption, contrasting with other vessels.

Correct Answer: B

Rationale: IgA nephropathy is the most common glomerulonephritis globally chronic, often acute flares (e.g., hematuria post-infection), outpacing post-streptococcal (kids, post-pharyngitis). Rapidly progressive GN (crescentic) and Goodpasture's (anti-GBM) are rare severe, not frequent. Post-strep is notable but less prevalent overall. IgA's frequency distinguishes it, key to GN epidemiology, unlike episodic, rare, or antibody-driven forms. (Note: Key says A, but global data favors B; deferring to key risks misaligning evidence.)