Med Terms Unit 4

216 terms by swalker09 

Create a new folder

Advertisement Upgrade to remove ads

Acetylcholine

most common neurotransmitter

Afferent nerves

carries messaes towards the brain and spinal chord

Arachnoid membrane

middle layer of the meninges

Astrocyte

transports water and salts

Ataxia

lack of muscular coordination

Autonomic nervous system

regulates automatic functions of the body

Blood-brain barrier

regulates what can enter the brain

Cell body

central portion of the neuron

Central nervous system

brain and spinal cord

Cerebellum

portion of the brain responsible for coordinated movement

Cerebrum

largest portion of the brain

Dendrite

carries electrical messages away from the body

Dura mater

outermost layer of the meninges

Ependymal cell

lines fluid-filled areas of the brain

Ganglion

group of nerve cell bodies

Meninges

three layers of connective tissue surrounding the brain and spinal cord

Microglial cells

breakdown of foreign material

Motor nerves

carries info away from the CNS

Myelin sheath

fatty material wrapped around the axon

Nerve

bundle of axons and dendrites

Neuroglia

supporting cells in the nervous system

Neuron

individual nerve cell

Neurotransmitter

chemical release at the synapse

Oligodendroglial cell

produces the myelin sheath

Parasympathetic nerves

regulated the body maintenance

Peripheral nervous system

everything outside the brain and spinal cord

Pia mater

innermost layer of the meninges

Sensory nerves

carry info to the CNS

Sympathetic nerves

regulates body during stress

Synapse

a junction between two neurons

Thalamus

portion of the brain responsible for sensory information and perception of pain

Ataxia

without coordination

Brainstem

structure containing the respiratory, cardiac, and vasomotor centers of the brain

Cerebrospinal fluid

fluid in the subarachnoid space

Coma

statie of unconcious where they cannot be aroused

Epidural hematoma

collection of blood above the dura mater

Myelominingiocele

herniation of the nerves, meninges, and cerebrospinal fluid

Neuropathy

disease of nerves

Plexus

large, interlacing network of nerves

Cerebrovascular accident

disruption of normal blood supply to the brain; a stroke

Dopamine

neurotramsitter used in the brain

Embolus

stroke due to blood clot in the BODY

Gait

manner of walking

Spina bifida

spinal column does not fuse properly

Thrombosis

stroke due to blood clot on the wall of an ARTERY

Astigmatism

ligh is not sharpley focused

Choroid

gives blood supply to the eye

Ciliary body

controls the shape of the lens

Cone

color vision

Cornea

transparent extension of thte sclera

Hyperopia

farsightedness

Iris

the colored portion of the eye

Lens

refracts light to allow for focusing

Myopia

nearsightedness

Optic nerve

carries visual information to the brain

Pupil

opening in the iris

Retina

nerve layer of the eye

Rod

black and white vision

Sclera

white outer covering of the eye

Causalgia

burning pain

Cephalalgia

head pain

Cerebral cortex

outer layer of the cerebrum

Cranial nerves

Twelve pairs of nerves that carry messages to and from the brain

Dyslexia

impaired ability to learn to read

Efferent neuron

a neuron conducting impulses away from the brain

Ecephalitis

inflammation of the brain

Gyrus

ridge on the cerebral cortex

Hemiparesis

partial paralysis of one side of the body

Neuraglia

severe sharp pain of a nerve or along the course of a nerve

Paraplegia

paralysis from the waist down

Pons

a brain structure located at the top of the brain stem that is involved in respiration, movement and sleep

Quadriplegia

paralysis from the neck down

Spinal nerves

31 pairs of nerves arising from the spinal cord

Stimulus

a signal that causes a response

Subdural hematoma

collection of blood under the dura mater

Sulcus

narrow grooves on the surface of the brain

Vagus nerve

parasympathetic nerve of the heart; activation slows heart rate

Alzheimer disease

deterioration of the brain

Demyelination

loss of the myelin sheath of a nerve

Hydrocephalus

excessive cerebrospinal fluid in the brain

Lumbar puncture

extraction of cerebrospinal fluid for diagnosis

Meningitis

inflammation of the meninges

Accommodation

the adjustment of lens focus

Anterior chamber

fluid-filled space between the cornea and iris

Aqueous humor

fluid between the cornea and iris

Cataract

clouding of the lens due to protein deposits

Conjunctiva

the lining of the eyelids and the covering of the sclerae

Fovea centralis

area of highest cones concentration on the retina

Glaucoma

increased pressure in the eyeball due to obstruction of the outflow of aqueous humor

Intraocular

Pertaining to within the eye

Lacrimation

shedding tears

Nystagmus

involuntary, rapid movement of eyeball

Optic chiasm

the crossing of the optic nerves

Refraction

the bending of light

Optic disc

the point where the optic nerve enters the retina; blindspot

Visual acuity test

assessment of vision clarity

Visual field test

Measures a patients peripheral vision while the eyes are fixed straight ahead.

Vitreous humor

soft jelly like material behind the lens; maintains the shape of the eyeball

Acoustic

pertaining to hearing

Auditory canal

produces cerumen

Auricle

Flap of the ear

Cerumen

ear wax

Cochlea

contains the receptors for hearing

Deafness

partial or complete loss of hearing

Eustacian tube

equalizes pressure

Incus

anvil; middle ossicles

Ossicles

small bones of the middle ear

Pinna

external portion of the ear; funnels sound waves

Semicircular canals

responsible for equalibrium

Tympanic membrane

eardrum

Malleus

hammer; first osscile

Stapes

stirrup; last osscile

Vertigo

sensation of rotation/whirling

Articular cartilage

Covers the ends of long bones

Calcaneous

Heel bone

Carpals

bones of the wrist

Cartilage

tough, flexible connective tissue

Cervical vertebrae

7 vertebrae of the neck

Clavicle

collarbone

Coccyx

the tailbone, made up of the four fused vertebrae at the base of the spinal column

Collagen

protein substance found in skin and connective tissue

Comminuted fracture

a splintered or crushed bone

Cranial bones

bones that house the brain

Decalcification

calcium loss

Diaphysis

shaft of a long bone

Epiphyseal plate

region of cartilage that allows for growth

Epiphysis

end of a long bone

Ethmoid bone

bones located between the eyes

Facial bones

bones that form the facial features

Femur

thigh bone

Fibula

the lateral lower leg bone

Fontanelle

soft spot between the skull bones of an infant

Humerus

upper arm bone

Ilium

the upper part of the hipbone

Impacted fracture

one end of a bone is wedged into the adjoining bone

Ischium

most inferior part of hip bone

Kyphosis

Humpback

Lacrimal bones

paired bones at the corner of each eye

Lordosis

forward curvature of the lumbar spine

Lumbar vertebrae

The five vertebrae in the lower back

Mandible

lower jaw bone

Metacarpals

palm

Metatarsals

forms sole of the foot

Ossification

bone formation

Osteoblast

cells that make bone

Osteoclast

cells that break down bone

Osteomalacia

softening of bone

Osteoporosis

condition of decreased bone density and increased porosity, causing bones to become brittle and liable to fracture

Patella

Knee Cap

See More

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set