Terms for Nervous System Parts

Terms for referring to parts of the nervous system. This is for Week 4 of PS1005 Biological Psychology

Peripheral Nervous System

Nerves outside the brain and spinal cord

Central Nervous System

Consists of brain and spinal cord

Somatic Nervous System

• Connects to sensory organs

• Helps move muscles that are consciously controlled

• Part of PNS

Autonomic Nervous System

• Part of PNS

• Regulates involuntary bodily functions

Lamina

Layer of cell bodies separated by dendrites and axons from other cell bodies

Column

Set of cells perpendicular to the surface of the cortex

Tract/Projection

• A set of axons along the CNS

• If axons extend from one cell structure to synapses to the next, it projects from A to B

Nerve

Cable-like bundle of axons that carry electrical impulses between your brain and the rest of your body

Nucleus

A membrane-bound organelle found in eukaryotic cells that contains the cell's DNA & RNA. It is often referred to as the "control center" of the cell.

Ganglion

Cluster of neuron cell bodies in PNS

Gyrus/Gyri

Bumps that make the brain wrinkle

Sulcus/Sulci

Crevices between the brain wrinkles

Fissure

A cleft/groove/indentation in a surface, especially any of the deep grooves in the cerebral cortex