unit 3 Flashcards
CNS
Central nervous system
Brain and spinal cord
PNS
Peripheral nervous system
Everything else
Spinal and Cranial nerves
Sensory Division
Sends messages to the brain (axons pointed towards brain)
Motor Division
Sends messages away from the brain (axons pointed away from the brain)
Astrocytes
Star shaped
Most numerous nerve cell
Pick up neurotransmitters
Protect neuron from blood (acts as bodyguard)
Microgills
Kills viruses, bacteria, and dead cells
Ependymal
Moves cerebrospinal fluid (cilia)
Oligodendrocytes
Insulate neuron
Form Myelin Sheath
Myelin Sheath
An insulating layer formed around nerves to protect them (around the Axon)
Neuron
Transmit a nerve pulse
Cant regenerate
Frontal Lobe
Moves skeletal muscle
Occipital Lobe
vision is deciphered
Temporal Lobe
Hearing is deciphered
Parietal Lobe
Pain and temper
Epithalamus
Part of diencephalon
Makes cerebrospinal fluid