1. Nervous System Neurons. Neuro ns 2. Carry electrical and chemical signals called impulses.

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Presentation transcript:

1. Nervous System Neurons

Neuro ns 2. Carry electrical and chemical signals called impulses.

Neuro ns 3. Sensory

Neuro ns 4. carry impulses from the sense organs to the brain.

Neuro ns 5. Motor

Neuro ns 6. carry impulses from the brain to muscles and glands.

Neuro ns 7. Interneurons

Neuro ns 8. connect sensory and motor neurons and carry impulses between them.

Neuro ns 9. Structures of a Neuron Dendrites

Neuro ns 10. Structures of a Neuron Cell body

Neuro ns 11. Structures of a Neuron Axon

Neuro ns 12. Structures of a Neuron Axon terminals

Neuro ns 13. Structures of a Neuron Nucleus

14 Axon terminal Direction of the impulse.

15 Dendrite Direction of the impulse.

16 Neurotransmitter (a chemical) Direction of the impulse.

17 Synapse (the space between neurons) Direction of the impulse.

35–1 The process by which an organism keeps internal conditions relatively constant is called a.a feedback loop. b.homeostasis. c.negative feedback. d.normal temperature.

35–1 Which of the following is NOT an example of feedback inhibition? a.shivering to warm the body b.sweating to cool the body c.turning on the heating system of a house d.nervous tissue receiving messages

35-2 The part of the neuron that carries impulses toward the cell body is the a.dendrite. b.myelin sheath. c.axon. d.nodes.

35-2 Neurons that carry impulses from the brain and spinal cord to the muscles are a.interneurons. b.sensory neurons. c.resting neurons. d.motor neurons.

35-2 Chemicals that are used by a neuron to transmit impulses are called a.neurotransmitters. b.synapses. c.axons. d.inhibitors.

35-2 The minimum level of a stimulus that is required to activate a neuron is called its a.action potential. b.resting potential. c.threshold. d.synapse.