Question

The blood vessel which
(a) enters the Malpighian capsule.
(b) leaves the Malpighian capsule

Answer 1

(a) Afferent arteriole - The afferent arterioles are a group of blood vessels that supply the nephrons in many excretory systems. They play an important role in the regulation of blood pressure as a part of the tubuloglomerular feedback mechanism. The afferent arterioles branch from the renal artery, which supplies blood to the kidneys. The afferent arterioles later diverge into the capillaries of the glomerulus.

(b) Efferent arteriole - The efferent arterioles are blood vessels that are part of the urinary tract of organisms. Efferent (from Latin ex + Ferre) means "outgoing", in this case meaning carrying blood out away from the glomerulus. The efferent arterioles form from a convergence of the capillaries of the glomerulus and carry blood away from the glomerulus that has already been filtered. They play an important role in maintaining the glomerular filtration rate despite fluctuations in blood pressure.