Humans have microscopic subunits in the kidneys called to filter blood, and spiders have to absorb salts and wastes.
nephridia; nephrons
nephrons; malpighian tubules
setae; nephridia

The correct answer would be nephrons; Malpighian tubules.

The nephron is the functional unit of kidneys in human beings. Each kidney consists of 1.5-2 millions of nephrons. The nephron consists of a renal corpuscle and renal tubule.

It helps in the formation of urine by filtration, secretion, reabsorption, and excretion of various substances.

The malpighian tubule is a part of a system associated with functions like excretion and osmoregulation. It is mainly found in myriapods, insects, tardigrades, and arachnids.

It helps in absorbing water, solutes, and wastes from the surrounding hemolymph.

a. suckling by young

b. hypothalamus

c. dopamine

d. trh

e. anterior pituitary

f. mammary glands

g. milk production