Flashcards in Lecture 29: Somatic System / Reflex Arc Deck (10)
Reflex Movements are generated in the....
- Spinal cord
The reflex arc consists of...
- Afferent Neuron
- Interneuron (CNS)
- Efferent neuron
What is a reflex?
- A predictable response
The withdrawal reflex...
- We only really realise we've hurt ourselves after removing the painful stimulus
- Before the signal reaches the brain
What is the corticospinal (pyramidal) pathway?
- Upper motor neuron
- Crosses over at medulla
- Lower motor neuron
- Controls precise movement of hands and feet
What are the non-corticospinal pathway?
- End up on to the final common pathway
- Involved in regulation of posture
- E.g. walking, chewing, smiling
Integration between motor and sensory systems occur in the...How does this happen?
- Basal ganglia
- They modify movement using a 'loop' system with the cortex
- The cerebellum ('little brain') is also involved
- Ensures the selected movement is coordinated, and guided by sensory feedback
- Development of automatic movements / motor programmes
The basal ganglia is a collection...
- Of cell bodies below cortex