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NPTE -- Neuro > Definitions > Flashcards

Flashcards in Definitions Deck (63)
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1

Agraphia

Inability to communicate through writing

2

Gray Matter

Unmyelinated neurons, contains capillaries, glial cells, cell bodies, and dendrites

3

White Matter

Myelinated axons, contains nerve fibers withouth dendrites

4

Alexia

Inability to understand written/printed language

5

Agnosia

Inability to recognize objects, faces, voices, places

 

Inability to interpret sensations

6

Apraxia

Inability to perform particular purposeful movements/actions

7

Anosognosia

"lack of insight"

Inability/refusal to recognize a defect or disorder that is clinically evident 

8

Broca's Aphasia

Inability to speak fluently, comprehension perserved

9

Wernicke's Aphasia

Poor comprehension, speak fluent gibberish

10

Homonymous hemianopsia 

loss of half of the feild of view on the same side of both eyes

11

Declarative Memory

Memory of facts/events

12

Thalamic Pain sYndrome

Spontanteous pain on the contralateral side of the body to the thalamic lesion

13

Brudzinski sign

flexion of neck facilitate flexion of the hips and knees

14

Kernig's sign

pain with hip flexion combined with knee extension

15

Brown Sequard Syndrome

1. Ipsilateral paralysis and loss of vibratory/position sense [damage to corticospinal tract, dorsal column]

2. Contralateral pain/temp loss [damage to lateral spinothalamic]

16

Endoneurium

Innermost covering of a peripheral nerve that surrounds each individual axon

17

Epineurium

the outermost covering of a peripheral nerve that surrounds the entire nerve and provides a buffer for the peripheral nerve

18

Perineurium

The middle layer of covering surrounding the peripheral nerve that envelopes fascicles or groups of axons and maintains the blood nerve barrier

19

A Fibers (4)

1. Large fibers

2. Myelinated

3. High conduction rate

4. Types: Alpha, beta, gamma, delta

20

Alpha Fibers (4)

1. Alpha motor neurons

2. Muscle spindle primary endings

3. Golgi tendon organs

4. Touch

21

Beta Fibers (3)

1. Touch

2. Kinesthesia

3. Muscle spindle secondary ending

22

Gamma Fibers (3)

1. Touch

2. Pressure

3. Gamma motor neurons

23

Delta Fiber (4)

1. Pain

2. Touch

3. Pressure, 

4. Temperature

24

Muscle Spindle (2)

1. Primary = low threshold stretch

2. Secondary = change in length

25

Golgi Tendon Organ

Responds to tension/stretch of a tendon

26

B fibers (4)

1. Medium fibers

2. Myelinated

3. Reasonably fast conduction rate

4. Pre-ganglionic fibers of the autonomic system

27

C Fibers (5)

1. Small fibers

2. Poorly myelinated or unmyelinated

3. Slowed conduction rate

4. Post-ganglionic fibers of the sympathetic system

5. Exteroceptors for pain, temp, touch

28

Allodynia

sensation of pain in response to a stimulus that would not typically produce pain

29

Analgesia

the absense of pai while remaining conscious

30

Anesthesia

The absence of touch sensation