1 somatic motor system module (next slide). 2 somatic motor menu somatic motor system overview of...
Post on 05-Jan-2016
225 Views
Preview:
TRANSCRIPT
1
Somatic Motor Systemmodule
(next slide)
2
Somatic Motor menu
Somatic Motor system
Overview of the Somatic Motor system
Praxis
Clinical signs related to the Somatic Motor system
Select ablue buttonto move tothat topic
(next slide)(previous slide) (select this button to return to this slide)
3
Somatic Motor system
Overview of the Somatic Motor system
Praxis
Clinical signs related to the Somatic Motor system
(next)
4
overview
• Interactions of the sensory and motor systems enable voluntary movement
• You have learned about these sensory and motor pathways earlier in this class!
Somatic MotorSystem
5
Somatic MotorSystem
6
Internal motor systems (cerebellum & basal ganglia) must be effective for functional motor output to take place.
Exit circuitry (motor output pathways) also must be effective for functional motor output.
7
corticoreticulospinal & vestibulospinal
Exit circuitry:
Corticoreticulospinal& Vestibulospinal pathways
- control of trunk muscles; posture
8
corticospinalExit circuitry:
Corticospinal pathway
- finely tuned hand movements
9
corticorubrospinalExit circuitry:
Corticorubrospinal pathway
- limb movements
10
corticobulbarExit circuitry:
Corticobulbar pathway
- finely tuned movementsof the face & head
Somatic Motor menu
11
Somatic Motor system
Overview of the Somatic Motor system
Praxis
Clinical signs related to the Somatic Motor system
(next)
praxisPraxisPraxisPraxisPraxis
12
• The ability to produce a NEW motor response
• Describes earlier phases of the motor learning process, NOT the execution of a learned or practiced motor pattern
• Once a motor act is practiced & learned, it NO LONGER requires praxis!
PraxisPraxisPraxisPraxis
13
• Depends upon multisensory input
14
• Depends upon multisensory inputs
• Allows multiadaptive responses in context
Somatic Motor menu
PraxisPraxisPraxisPraxis
15
Somatic Motor system
Overview of the Somatic Motor system
Praxis
Clinical signs related to the Somatic Motor system(next)
16
Position sense testClonusBabinski signEnhanced deep tendon responsesSpasticityClasp knife response
1
2
3
5
6
Select buttons to view videoclips
4
Clinical Signs Signs
Somatic Motor Clinical signs
17
Position sensePosition sense
With the client’s eyes closed, the clinician manipulates the client’s right thumb. He is asked to point his left thumb in the same direction as his right thumb. The clinician switches sides and he is no longer able to perform the task.
PlayMovie
Clinical Signs Signs
18
ClonusClonus
A series of fast, involuntary contractions symptomatic of damage to upper motor neurons.
PlayMovie
Clinical Signs Signs
19
Babinski reflexBabinski reflex
An extension of the great toe, sometimes with fanning of the other toes, in response to stroking of the sole of the foot. It is a normal reflex in infants, but it is usually associated with a disturbance of the pyramidal tract in children and adults.
PlayMovie
Clinical Signs Signs
20
Enhanced Deep Tendon ReflexesEnhanced Deep Tendon Reflexes
An unusually vigorous patellar tendon reflex may be observed following upper motor neuron damage, often in conjunction with heightened muscle tone (spasticity) and clonus.
PlayMovie
Clinical Signs Signs
21
SpasticitySpasticity
The man exhibits spasticity of the right side, while the woman exhibits spasticity of the left side. Note the posture of the affected arm, the swinging of the leg from the hip with reduced range of the knee and ankle joints, and the reduced dynamic balance.
PlayMovie
Clinical Signs Signs
22
Clasp knife responseClasp knife response
An animation of the concept, meant to illustrate an initially great resistance to extension of the joint, followed by a gradual “melting” of the resistance as continued, steady pressure is applied.
PlayMovie
Clinical Signs Signs
23
That ends the Somatic Motor system tutorial!
Somatic Motor menu
top related