A neuron in the retina of the eye
A neuron in the retina of the eye
Nervous tissue Sensory In all receplors Dendrites neurons, Dendrites ows Trom dendrites to axons. The cell bod contains the body nucle Axon Long Nodes Nucleus extensions body may be Nucleus surrounded elin a Axon fatty material Axon Axon that insulates terminals Porlion of and muscle cell increases the rate of electrical transmission Sensory Neuron Motor Neuron Interneuron
Nervous tissue Node of Ranvier Nucleus Mitochondria Cell body elin sheath endoplasmic Axon This is a detailed view of a motor neuron. A synapse is a tiny gap between the axon of one neuron and the dendrite of the next or between an axon and a muscle cell or gland cell
Dendrites Direction ot conduction Cell bo Axon Direction ot Dendrites FIGURE 51.2 A motor and a sensory neuron (a) The motor neuron carries impulses or"commands"to muscles and glands (effectors). (b)The sensory neuron carries information about the environment to the brain and spinal cord
Cell body Dendrites Nucleus Schwann Node of sheath Ra angier FIGURE 51.4 Structure of a typical neuron. Extending from the cell body are many dendrites, which receive information and away from the cell body. Many axons are encased by,es carry it to the cell body. A single axon transmits impuls myelin sheath, whose multiple membrane lavers facilitate a more rapid conduction of impulses. The sheath is interrupted at regular intervals by small gaps called nodes of Ranvier. In the peripheral nervous system, myeli sheaths are formed by supporting Schwann cells