مقدمة الجهاز العصبي الحركي Flashcards
بسم الله الرحمن الرحيم وبه نستعين
“سنريهم آياتنا في الآفاق وفي أنفسهم حتي يتبين لهم أنه الحق “
Define Motor Nervous System
System responsible for
Intiation + Coordination +Control of Skeletal Muscle Contraction
بسم الله الرحمن الرحيم وبه نستعين
“سنريهم آياتنا في الآفاق وفي أنفسهم حتي يتبين لهم أنه الحق “
Define Motor Nervous System
System responsible for
Intiation + Coordination +Control of Skeletal Muscle Contraction
Motor of Facial Muscles is controlled by?
Nuclei of Motor Cranial Nerves
Motor of body muscles is controlled by ?
AHCs of Spinal Cord
If UMN is cut leads to ?
Voluntary contarction loss
Reflex is intact but is not as usual
IF LMN IS CUT ?
Loss of Both voluntary and Reflex Movments
Type of skeletal muscle contration ?
Voluntary purpoful
Reflex automatic
Mention example of voluntary mocments
Fine Movements :
Fingers + hands called
distal limb muscles
Gross Movements :
Axial muscles: back
Proximal limb muscles: Arm
Learned Skilled Movments = Fine+Gross movements as piano playing
Requirements of Voluntary muscle contraction mention
Intact Mucles
Intact UMN
Intact LMN
Reflex Muscles contraction requiremts?
Intact muscle
intact Reflex Pathway
Intact LMN
Reflex contracion as ?
Muscle ToOone
Antreior horn cells has 2 types of neuron mention
Anterior motor neuron to SM
Interneurons Intermediate
Antreior horn cells has 2 types of neuron mention
Anterior motor neuron to SM
Interneurons Intermediate
types of anterior motor neurons
alpha +gama
alpha motor neuron called ?
Lower motor neuron
Final common path
to odrinary contractile extrafusal muscle fibers
Why alpha motor neuron called final common path ?
that is because whether the muscles contracted Voulnatry or Reflexly it needs in the end to send impusle to lower motor neuroooon
somatotopic organiztation of a motor neurons
يعني خريطة توزيع الالفات
medial part of Anterior horn supply ?
-Axial +Proximal limb muscles
-Gross Movements + Posture
Dorsolateral part of Anterior horn supply?
Distal limb muscle
For fine movments