COORDINATION

3. muscle consists of a bundle of long muscle fiber. Each muscle fiber consists of hundreds of myofibrils.
5. Its function is transmitting output impulse from CNS to muscles and glands.
8. potential The membrane potential when axon is not transmitting any impulse.
9. Synaptic terminal/knob is a small swelling at the terminal of a neuron contains synaptic vesicles with ______________ molecules.
11. highly branched extensions that receive input and conduct toward cell body
17. is a stimulant drug that affects dopamine synapse in the brain.
18. conduction velocity depends on 3 factors : Axon diameter,Myelination of neuron and number of __________
19. A nervous system which controls voluntarily responses
20. ions when a neuron is not transmitting an impulse;
21. If the depolarization reach ______________, -55mV trigger an action potential.
22. concentration inside the neurons contains mostly

1. Gaps between myelin sheaths where signal jumps to next node
2. voltage-gated sodium channels are closed Some voltage-gated potassium channels are still open/ slowly closed
4. Conducts signals to and from the brain, controls reflex activities.
6. potential The membrane potential when axon is transmitting impulse
7. Comprised of sensory and motor neuron that connect CNS to receptors and effectors
10. pumps During resting potential Na+ and K+ gradients are maintained by_____________
12. junction is a synapse between terminals ends of motor neuron with skeletal muscle or smooth muscle
13. Autonomic NS that dominant under stress or at time danger
14. A nervous system which controls involuntarily activities of internal environment
15. Autonomic NS that promote calming and return to normal
16. ions when a neuron is not transmitting an impulse outside the neurons a higher concentration of