Oral Quiz- Round 1 terminology Flashcards
(41 cards)
clonus
-Involuntary, rhythmic reflexive contraction from a single muscle group
-Elicited by stretch, cutaneous stimulation, noxious stimulation, voluntary movement
-Lack of motor tract control
abnormal synergy
Involuntary, patterns of muscle activation that occur when voluntary movement it attempted-often due to damage in the CNS, particularly after stroke or brain injury
atrophy disuse
loss of muscle bulk resulted from lack of muscle use
atrophy neurogenic
Loss of muscle bulk due to damage from the nervous system
Broca’s aphasia
- Loss of motor speech/expressive speech
- Damage to left inferior frontal gyrus
co-contraction
- Simultaneous contraction of antagonist muscles
- Allows for stability of a joint
cramp
- Severe, painful muscle contractions lasting seconds to minutes. High-frequency discharges of MNs overstimulated by sensory and motor tract input cause cramps.
- Occurs when excitatory input overwhelms inhibitory input, leading to uncontrolled muscle spasm
degrees of freedom
- varying outcomes that could occur within each system
exteroceptive facilitation
- The use of external stimuli to enhance muscle function (stimuli outside the body)
extrinsic feedback
- augmented (PT)
- concurrent (during)
- terminal (after)
fasciculation
- Quick twitches of all muscle fivers in a single motor unit and are visible on the surface of the skin
- Caused by hyperexcitability of motor nerves, can be LMN sign
feedback
- closed loop reflexive/behavioral; 2 types are intrinsic or extrinsic
fibrillation
- Random spontaneous, brief contractions of single muscle fibers not visible on the surface of the skin and are always
- Caused by unstable muscle membrane hypersensitive to ACh
fractionation
- Ability to activate individual muscles independently of other muscles. Essential for normal movement of the hands. Without it, the fingers and thumb would act as a single unit
- Rubrospinal and lateral corticospinal tract
global aphasia
- Inability to use language in any form. Pt cannot produce speech, comprehend language, speak fluently, read, or write. Damage to much of the left cerebrum
hemiplegia
Weakness affecting one side of the body
hyper-reflexia
- Excessive reflex response to passive muscle stretch.
- Caused by reduced descending inhibition of MNs and subsequent development of MN excessive excitability
hypertonia
- Excessive resistance to stretch of a muscle at rest
- Produced by neural input to muscles and/or by changes within the muscle
hypotonia
Decreased muscle tone, LMN sign
intrinsic feedback
- Inherent (pain)
- Feedback from self or visual feedback from mirror
lower motor neuron lesion/syndrome
- Hyporeflexia, decrease or loss of reflexes, paresis or paralysis, atrophy, decrease or loss of muscle tone, fibrillations
motor control
Process of initiating, directing, and grading purposeful voluntary movement
motor learning
- Study of the acquisition and/or modification of movement
motor program
A structured set of neural commands that are organized and stored in the CNS, these programs enable the execution of coordinated movements without the need for conscious control of every individual muscle action