Quiz 3 Flashcards
Neuromuscular junction
Synapse between a motor neuron axon and a muscle fiber
Animal movement depends on
muscle contractions
Three types of muscles
- Smooth
- Skeletal/striated
- Cardiac
Release of __________ causes the muscles to contract
Acetylcholine
Movement requires the alternating contraction of opposing sets of muscles called
Antagonistic muscles
Flexor muscle
One that flexes or raises an appendage
Extensor muscle
One that extends and appendage or straightens it
Prefrontal cortex (1)
- Gives command: Move
- Responds to lights, noises
- Calculates predictable outcomes of actions
Posterior parietal cortex (aiming) (1)
-Position in space in reference to object
Premotor cortex (2)
- Plans escape route
- Receives information about a target
Supplementary motor cortex (3)
Get to the target
Primary motor cortex (4)
- Connects to the brain and spinal cord
- Generate impulses that control movements
Primary somatosensory cortex (5)
Integrates touch information and movement
Mirror neurons
Active during both preparation of a movement and while watching someone else perform a similar movements
Lateral corticospinal tract
Hands, feet, fingers
PMC to red nucleus to pyramids of the medulla
