-ulus, -olus, -ulum, -ola

(Latin: suffix; little, small)

calyculus ophthalmicus
An optic cup, formed by invagination of the optic bulb and developing into the retina.
cauliculus
cocculus
cremaster muscle; musculus cremaster
An extension of the internal oblique abdominal muscle over the spermatic cord and testis.

The cremaster muscle covers the testis. Its function is to raise and lower the scrotum in order to regulate the temperature of the testis and promote spermatogenesis. In a cool environment the cremaster draws the testis closer to the body preventing heat loss, while when it is warmer the cremaster relaxes allowing the testis to cool.

The cremaster develops to its full extent only in males; in females it is represented by only a few muscle loops.

cumulus (s) (noun), cumuli (pl)
1. A cloud formation that resembles thick, snowy-white hills with darker horizontal bases: The cumulus cloud rolled ominously across the sky today.
2. Large white puffy clouds which usually appear during fair weather. Some cumuli form thunderheads on hot days and may even carry rain.
dracunculus
1. A genus of nematodes that includes parasitic species such as Dracunculus medinensis, which migrates within subcutaneous tissues and forms chronic ulcers in the skin.
2. A genus (the type of the family Dracunculidae) of greatly elongated nematode worms including the guinea worm.
3. Plants called tuberous herbaceous perennials; dragon arum.
Dracunculus medinensis
A threadlike worm 30 to 120 cm long that inhabits the subcutaneous and intermuscular tissues of humans and domestic animals in India, Africa, and the Arabian peninsula, causing dracunculiasis.

Its embryos are discharged through an opening in the skin upon contact with water; from the water they enter the body of a small crustacean, Cyclops, where they undergo larval development. Also known as: dragon worm, guinea worm, Medina worm, and serpent worm.

fasciculus
A bundle of anatomical fibers; such as, of muscle or nerve.
flocculus
1. A small, fluffy mass or tuft.
2. A tuft of fine hairs on the legs of certain insects.
3. In anatomy, either of two small lobes on the lower posterior border of each lobe of the cerebellum.
4. In astronomy, any of various masses of gases appearing as bright or dark patches on the sun's surface.
folliculus
1. A follicle.
2. A spherical collection of cells which may contain a cavity.
funiculus
1. A little rope.
2. A cord: in anatomical nomenclature, a general term for a cordlike structure or part.
3. The umbilical cord (funis); hence; in botany, a little stalk by which a seed or ovule is attached to the placenta.
4. A term for the part of the antenna which lies between the scape and the club in certain insects.
5. Applied to the primitive cord or bundle of nerve fibres, bound together in a sheath of connective tissue, called the perineurium or neurilemm.
glomerulus (s), glomeruli (pl)
1.In the kidney, a tiny ball-shaped structure composed of capillary blood vessels actively involved in the filtration of the blood to form urine. The glomerulus is one of the key structures that make up the nephron, the functional unit of the kidney.
2. In the olfactory bulb, an anatomically discrete module receiving input from an olfactory sensory neuron.
3. One of the structures which comprise the nephron (functional unit) in the kidney. The glomerulus is composed of capillary blood vessels which are actively involved in the filtration of the blood.

The glomerulus in the kidney was so named by the Italian anatomist Marcello Malpighi (1628-1694). The structure was once called a malphigian corpuscle. Glomerulus is the diminutive of the Latin glomus meaning "ball of yarn". It is literally a "little ball of yarn".

homunculus
1. A diminutive or dwarfish man.
2. A person who is very small but who is not otherwise deformed or abnormal.
lienculus, lien accessorius
1. Splenculus, little spleen.
2. Splen accessorius, "accessory spleen"; a connected or detached outlying portion, or exclave, of the spleen.
lobulus (s), lobuli (pl)
1. A lobule or lobules.
2. The anatomic nomenclature for a small lobe or one of the primary divisions of a lobe.