cueFlash

Glossary of 420

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Anosognosia
Ignorance of presence of disease - specifically paralysis of a limb resulting in denial of ownership or the limb. Also applies to general inability to perceive disease (ie mental illness).
Agraphia
inability to WRITE in the ABSENCE of PARALYSIS, COGNITIVE INTENT. Language related.
Alexia
Inability to READ
Receptive Aphasia
Inability to understand spoken language. Wernickes - 22,39
Global Aphasia
Combined inability to express and to understand spoken language.
Ideational Apraxia (agnosia)
MISUSE of objects due to MIS-IDENTIFICATION. Ie use fork to comb hair.
Verbal Apraxia
Inability to produce motor patterns resulting in speech - WITHOUT impaired understanding, muscle paralysis/weakness or intellect
Motor Apraxia
Disorder of VOLUNTARY mvmt not withstanding the absence of paralysis or muscle weakness.
Apraxia
Inability to perform purposeful mvmts in the absence of paralysis/weakness.

loss of the ability to execute or carry out learned purposeful movements, despite having the desire and the physical ability to perform the movements. It is a disorder of motor planning.

Constructional apraxia
Inability to draw objects in the absence of paralysis.
Asterognosis (tactile agnosia)
Inability to identify held objects in the absence of language or sensory loss.
Dysarthria
IMPAIRMENT OF MOTOR FUNCTION of SPEECH PRODUCTION
Dysphagia
Impairment of SWALLOWING
Dysphasia
Impairment in PROCESSING OF LANGUAGE.
Hemiakinesia
Neglect of motor function of one side of the body - usually left b/c right brain is dominant for fx of body awareness.
Hemiasomatoagnosia
Neglect of SENSORY and therefore awareness of one side of the body.

Usually left (because right is dominant for body awareness). MCA is usually lesion.

Hemineglect
Neglect of one side of the body - arising from BODY IMAGE DYSFX
Hemiparesis
partial paralysis of one side of the body (not just weakness)
Hemiplegia
Paralysis of one side of the body
Kinesthesia
Motion sense
Proprioception
Info from specific sensory receptors in jts, tendons and muscles
Proliferation
Growth in number of cells by cell division (mitosis)
Migration
Whoe cell mvmt, cell crawling
Adhesion
Special surface receptors adhere cells to one another to form multi-cellular structures
Differentiation
Cells become committed and begin to specialize
Growth & Remodelling
Differentiated cell can GROW in size, but not number.

REMODELLING via selective programmed cell death

Vascularization and nutrition
Blood vessels develop (angiogenesis) to supply the tissue and...

Secretion of nutritional CSF by ependymal cells of choroid plexus

**NO lymphatic system in brain tissue!**



Myelination
Covering of axons (not dendrites of cell bodies) by wrapping of myelin.

CNS - oligodendrocytes
PNS - Schwann Cells


Cell death
Apoptosis - programmed cell death, restricted by blockers. Impt role in pruning unwanted neurons during neural development
Support & Coverings
NO CT in brain tissue (ie no fibroblasts), BUT is support cells and CT associated w/ blood vessels. And CT containing coverings.
Acute pain
Unpleasant sensory perceptual or emotional response to an ACTUAL noxious stimulation of a tissue or an organ.
Allodynia
Sensation of the pain in response to normally NON-PAINFUL stimuli
Analgesia
Absence of pain in response to stimulus that is not normally painful
Anesthesia
Absence of ALL sensory modalities
Arthralgia
Pain in a joint
Benign Pain
Pain that persists with NO KNOWN nocioceptive input from periphery
Causalgia
BURNING pain
Chronic Pain
Pain that persists for longer than a month beyond usual course of acute injury/disease
DEafferentiation of pain
pain due to loss of sensation of afferent fibers. Phantom limb pain?
Dyesthesia
UNpleasant abnormal sensation (not usually pain)
Hypoalgesia
Lessened sensitivity to painful stimulus
Hypoesthesia
Diminished sensitivity to any sensory stimulus
Neuropathy
Impaired fx of a nerve
Pain
UNpleasant sensory and emotional experience associated with actual or potential tissue damage
Radiculalgia
Pain in distribution of sensory nerve root(s)
Paresthesia
Abnormal sensation, not unpleasant.
Radi-
involvement of NERVE ROOTS
Motor Unit
A single alpha motor neuron and all the muscle fiberS it innervates.
Engram
PAttern of nervous system responses

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