Study sets, textbooks, questions
Upgrade to remove ads
Motor Tracts - Weekend 4
Terms in this set (16)
What is the general term for this type of pathway? (directional): delivers information from the brain to the spinal cord, and the the muscles in the PNS
descending motor tracts
what controls postural/gross movement tracts?
automatic skeletal muscles
Fine motor tracts are controls by?
fractionated movements of limbs and face
Non-specific tracts are controlled by?
all motor neurons
T or F:
We like fractionated, isolated, dissociated movement?
Medial motor tracts control LMNs that innervate ____ and ____ muscles
postural and girdle
What are the three tracts from the BRAIN STEM that is UNCONSCIOUS and AUTOMATIC?
What is the tract from the CORTEX that is CONSCIOUS that innervates voluntary control of the neck, shoulder, and trunk muscles?
facilitates ipsilateral extensor and inhibits ipsilateral flexors
helps responds to destabilization
cervial and thoracic cord, influencing neck and upper back muscles
begins in reticular formation in brainstem, coordinates the trunk with all 4 limbs during walking, automatic head turn from colliculi input, anticipatory postural adjustments.
when things move together as a group (ex: flexor synergy pattern). Occurs due to a lack of descending input.
FYI: Look at pathway on slide
considered emotional motor tracts
Modulate activity in spinal cord by releasing serotonin and norepinephrine
ceruleospinal and raphespinal tracts
What are some signs of UMN motor tact lesions?
Paresis and paralysis
Abnormal muscle tone
Loss of fractionated movement
what are some signs of LMN injuries?
Fasiculations (benign) - twitches you can see
Sets with similar terms
Primary Motor Cortex
Ch. 17-Upper Motor Neurons
Ch. 14 Motor Pathways
Other sets by this creator
Memory Consciousness and Intellect - Weekend 7
Traumatic Brain Injury (TBI) - Weekend 6
Nociception: Pain - Weekend 5
Motor Basics 13 and 14 - Weekend 4
Other Quizlet sets
Light and Sound Energy
genetics quiz 2
Nocti - Study Packet 7
Sophie's world book study guide Chapter 1