Afferent (from Latin, af meaning "to" and ferre meaning "to carry") is an anatomical term meaning "conveying towards a center".
The afferent arterioles are a group of blood vessels that supply the nephrons in many excretory systems.
The efferent arterioles are blood vessels that are part of the urinary tract of organisms.
The efferent ducts (or efferent ductules or ductuli efferentes or ductus efferentes or vasa efferentia) connect the rete testis with the initial section of the epididymis.
In the peripheral nervous system, an efferent nerve fiber is the axon of a motor neuron.
The lymphatic vessels (or lymph vessels or lymphatics) are thin-walled vessels structured like blood vessels, that carry lymph.