Copyright 2009 Pearson Education, Inc. Figure 11.1 Components of the nervous system

Copyright © 2009 Pearson Education, Inc.

Figure 11.1 Components of the nervous system.


Table 11.1 Comparison of Structural Classes of Neurons (1 of 3)

Sensory neuronsMotor neurons,CNS, and othersites

Rare.Eye, ear, nose


Figure 11.2 Types of neurons in the nervous system.


Figure 11.2 Types of neurons in the nervous system.

_______neuron

Axon hillock

Interneuron

Brain and spinal cord

_____neuron

Skin

Muscle

Impulse direction

Distance across the cytoplasm (not including processes) is up to 200 µm in humans (motor neurons of ventral horn of spinal cord )


Figure 11.7a A myelinated motor neuron


Figure 11.7a A myelinated motor neuron of the peripheral nervous system.


Figure 11.7b A myelinated motor neuron of the peripheral nervous system.


Figure 11.8 Summary of synaptic transmission. (1 of 4)


Table 11.1 Actions of common neurotransmitters


Figure 11.13 The ventricles of the brain and circulation of cerebrospinal fluid.


Figure 11.13 The ventricles of the brain and circulation of cerebrospinal fluid.


Figure 11.14a–b The human spinal cord.


Figure 11.14b–c The human spinal cord.


Figure 11.14b–c The human spinal cord.


Figure 11.14b–d The human spinal cord.


Figure 11.10 Spinal reflexes.


Figure 11.10 Spinal reflexes. Slide 4

To brain

Effectormuscles(thigh)

Interneurons

Spinal cord

_____neuron _____neuron

Extensor reflexFlexor reflex

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Copyright 2009 Pearson Education, Inc. Figure 11.1 Components of the nervous system