Medical Terminology Simplified

9–97 Each spin/al nerve has two roots, which are neurons entering or leaving the

spinal cord. The dors/al root is made of sensory neurons that carry impulses into the

spinal cord. The ventr/al root is the motor root. It is made of motor neurons carrying

impulses from the spin/al cord to muscles or glands. The cell bodies of these motor

neurons are in the gray matter of the spin/al cord. When the two nerve roots merge,

the spin/al nerve formed is a mixed nerve.

Provide the meaning for the following CFs:

dors/o:__________ (__________ __________)

neur/o:__________

ventr/o:____________________, ____________________ __________

9–98 Use neur/oto form medical terms that mean

pain in a nerve:__________ / ____________________

inflammation of a nerve:__________ / __________

tumor of nerve (tissue):__________ / __________

any disease of nerves:__________ / _____ / ____________________

9–99 Use myel/oto form medical words that mean

inflammation of the spinal cord:__________ / __________

softening of the spinal cord:__________ / _____ / ____________________

tumor of bone marrow:__________ / __________

9–100 The CF thromb/orefers to a blood clot. A thromb/o/cyte is a blood-

clotting__________.

A thromb/o/cyte (platelet) promotes the formation of clots and prevents bleeding.

Another name for platelet is____________________ / _____ / __________.

9–101 Although the terms embolus and thrombus denote a disorder related to

a clot, they both have different meanings. An embolusis a clot present in blood or

lymphatic vessels and brought there by blood or lymph. A thrombusis a clot that

adheres to the wall of a blood vessel or organ and may obstruct the vessel or organ in

which it resides, preventing the flow of blood.

The term thromb/o/lysis refers to the destruction or loosening of a blood__________.

9–102 Use -genesis to form a word that means producing, forming, or origin of a

blood clot.

____________________ / _____ / ____________________

Frame 9–92to Frame 9–102

Nervous System • CHAPTER 9 425

neur/algia

nū-RĂL-jē-ă

neur/itis

nū-RĪ-tĭs

neur/oma

nū-RŌ-mă

neur/o/pathy

nū-RŎP-ă-thē

back (of body)

nerve

belly, belly side

myel/itis

mī-ĕ-LĪ-tĭs

myel/o/malacia

mī-ĕ-lō-mă-LĀ-shē-ă

myel/oma

mī-ĕ-LŌ-mă

cell

thromb/o/cyte

THRŎM-bō-sīt

clot

thromb/o/genesis

thrŏm-bō-JĔN-ĕ-sĭs