1. Nerve Pathways

2. How are neurons joined together?
Synapse-
Gap-
Neurotransmitters-
Synapse-junction between two communicating neurons
A gap between the two neurons exists
Formed from an axon of one neuron and a dendrite of another neuron
Neurotransmitters cross the synapse to continue the signal of the electrical impulse

3. What is a reflex? Reflex- Involuntary processes- Automatic actions-
Withdrawal reflex-
Knee jerk reflex-

4. What are the GENERAL reflex steps?
1. Peripheral Nervous System detects stimulus
2. Afferent neural signal to CNS (brain/Spinal cord) (A)
3. CNS interneurons (C)
4. Efferent neural signal away from CNS (B)
Synapse-junction between two communicating neurons
A gap between the two neurons exists
Formed from an axon of one neuron and a dendrite of another neuron
Neurotransmitters cross the synapse to continue the signal of the electrical impulse

5. What are the steps of the Reflex Arc?
Stimulus
Sensory Receptor
Sensory Neuron
CNS interneurons (one or several)
Motor neurons
Effector (muscle or gland)
Synapse-junction between two communicating neurons
A gap between the two neurons exists
Formed from an axon of one neuron and a dendrite of another neuron
Neurotransmitters cross the synapse to continue the signal of the electrical impulse

6. Reflex Arc Coloring (pg 130)
Color the following different colors and label each in the color you use
Spinal cord
Effector/muscle tissue
Sensory receptor/skin
Sensory neuron
Interneuron
Motor neuron