| intermediolateral column | The intermediolateral nucleus (IML) is a region of gray matter found in Rexed lamina VII of the spinal column [Wikipedia: http://en.wikipedia.org/wiki/Intermediolateral_nucleus]. | — |
| nephron | A single excretory unit of the vertebrate kidney [Brenda]. | — |
| sacral parasympathetic nucleus | — | — |
| ventral column | — | — |
| retrodorsolateral column | — | — |
| dorsomedial column | — | — |
| phrenic nucleus | A nucleus comprised of motor neurones located in medial areas of the ventral horn of the spinal cord from about C3 to C6; axons of neurones in this nucleus innervate the diaphragm [Mondofacto: http://www.mondofacto.com/facts/dictionary?phrenic+nucleus]. | — |
| ventrolateral column | — | — |
| ventromedial column | The axons in the ventromedial column of the spinal cord that are involved in the control of posture and locomotion and are under brain stem control [Quizlet: http://quizlet.com/dictionary/ventromedial%2Bpathway/]. | — |
| glomerulus | In the kidney, a tubular structure called the nephron filters blood to form urine. At the beginning of the nephron, the glomerulus is a network (tuft) of capillaries that performs the first step of filtering blood [Wikipedia: http://en.wikipedia.org/wiki/Glomerulus]. | — |
| accessory nucleus | The spinal accessory nucleus lies within the cervical spinal cord (C1-C5) in the ventral horn. The nucleus ambiguus is classically said to provide the "cranial component" of the accessory nerve [Wikipedia: http://en.wikipedia.org/wiki/Spinal_accessory_nucleus]. | — |
| lumbosacral nucleus | — | — |
| eyelid | Either of the movable folds of skin and muscle that can be closed over the eyeball [Brenda]. | — |
| testis | A typically paired male reproductive gland that produces sperm and that in most mammals is contained within the scrotum at sexual maturity [Brenda]. | — |
| lacrimal gland | The lacrimal glands are paired almond-shaped glands, one for each eye, that secrete the aqueous layer of the tear film. They are situated in the upper, outer portion of each orbit, in the lacrimal fossa of the orbit formed by the frontal bone. Inflammation of the lacrimal glands is called dacryoadenitis. The lacriminal gland produces tears which then flow into canals that lead to the lacriminal sac. From this sac, the tears drain through a passage into the nose [Wikipedia: http://en.wikipedia.org/wiki/Lacrimal_gland]. | — |
| conjunctiva | The mucous membrane that lines the inner surface of the eyelids and is continued over the forepart of the eyeball [Brenda]. | — |
| epididymis | A system of ductules emerging posteriorly from the testis that holds sperm during maturation and that forms a tangled mass before uniting into a single coiled duct which is continuous with the vas deferens [Brenda]. | — |
| cornea | The transparent part of the coat of the eyeball that covers the iris and pupil and admits light to the interior [Brenda]. | — |
| prostate | The prostate (from Greek ÏÏοÏÏάÏÎ·Ï - prostates, literally "one who stands before", "protector", "guardian") is a compound tubuloalveolar exocrine gland of the male reproductive system in most mammals [Wikipedia: http://en.wikipedia.org/wiki/Prostate]. | — |
| sclera | The tough white outer coat of the eyeball, covering approximately the posterior five-sixths of its surface, and continuous anteriorly with the cornea and posteriorly with the external sheath of the optic nerve [Brenda]. | — |
| vas deferens | A spermatic duct especially of a higher vertebrate that in the human male is a thick-walled tube about two feet (0.61 meters) long that begins at and is continuous with the tail of the epididymis and eventually joins the duct of the seminal vesicle to form the ejaculatory duct [Brenda]. | — |
| lens | A highly transparent biconvex lens-shaped or nearly spherical body in the eye that focuses light rays (as upon the retina) [Brenda]. | — |
| vitreous humor | The clear colorless transparent jelly that fills the eyeball posterior to the lens [Brenda]. | — |
| penis | A male organ of copulation that in male mammals including humans usually functions as the channel by which urine leaves the body [Brenda]. | — |
| iris | The circular pigmented membrane behind the cornea, perforated by the pupil; the most anterior portion of the vascular tunic of the eye, it is made up of a flat bar of circular muscular fibers surrounding the pupil, a thin layer of smooth muscle fibers by which the pupil is dilated, thus regulating the amount of light entering the eye, and posteriorly two layers of pigmented epithelial cells [Brenda]. | — |
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