nerves and eye

autonomic nervous system

• chemicals that transmit messages from one neuron to another

• carries nerve impulses away from the cell body

• division of the peripheral nervous system that controls involuntary activity of the body

• send messages from CNS to the body

somatic nervous system

• carries nerve impulses away from the cell body

• the division of the peripheral nervous system that controls the body's skeletal muscles

• send messages from sensory organs to CNS

• space between neurons

neurotranmitters

• chemicals that transmit messages from one neuron to another

• send messages from CNS to the body

• receives messages and conducts impulses toward the cell body

• the division of the peripheral nervous system that controls the body's skeletal muscles

synapse

• space between neurons

• send messages from CNS to the body

• brain and spinal cord

• the division of the peripheral nervous system that controls the body's skeletal muscles

node of ranvier

• the division of the peripheral nervous system that controls the body's skeletal muscles

• fatty layer insulating the axon to increase impulse transmision

• small gap between myelinated segments where axonal membrane is exposed

• send messages from CNS to the body

sensory neurons

• chemicals that transmit messages from one neuron to another

• the division of the peripheral nervous system that controls the body's skeletal muscles

• send messages from sensory organs to CNS

• space between neurons

dendrites

• space between neurons

• fatty layer insulating the axon to increase impulse transmision

• receives messages and conducts impulses toward the cell body

• send messages from sensory organs to CNS

central nervous system

• chemicals that transmit messages from one neuron to another

• brain and spinal cord

• small gap between myelinated segments where axonal membrane is exposed

• space between neurons

myelin sheath

• division of the peripheral nervous system that controls involuntary activity of the body

• carries nerve impulses away from the cell body

• send messages from sensory organs to CNS

• fatty layer insulating the axon to increase impulse transmision

what is letter b?

• sclera

• iris

• vitreous body

• retina