Location: Mainly located within the gray matter ganglia of the cerebral and cerebellar cortex, brainstem, and spinal cord

Shape: round, cone, fusiform, star, etc.

Nucleus: located in the center, large and round, with obvious nuclear envelope and more euchromatin, so it is lightly colored, and the nucleolus is large and round.

Cytoplasm【LM】

Cell membrane [excitable membrane]

one or more

dendritic spines

The structure of the cytoplasm is similar to that of the cell body

Function

The ability of divine elements to receive and integrate information is closely related to the degree of branching of their dendrites and the number of dendritic spines.

one (emanated from the cell body)

LM

Function

multilevel neurons

bipolar neurons

pseudounipolar neuron

Sensory neurons (afferent neurons): carry information into the center

Motor neurons (efferent neurons): responsible for transmitting nerve impulses to muscle cells or gland cells

Interneurons: Mainly multi-level neurons, located between the first two types of neurons, playing the role of information processing and transmission

Golgi type I neuron

Golgi II neurons

synaptic vesicles

Mitochondria

microfilament

microtubules

The largest, the cell body is star-shaped, the nucleus is round or oval, larger, lightly stained, and there are glial filaments in the cells.

Function

less

Function

smallest

Function

Function

Myelin-forming cells of the peripheral nervous system

Secrete neurotrophic factors to promote the survival of damaged neurons and their axon regeneration

peripheral nervous system

central nervous system

peripheral nervous system

central nervous system

Function: Involved in generating sensations of cold, heat, light touch and pain

Function: Participate in the production of touch

Function: Involved in producing pressure and vibration sensations

Belongs to proprioceptors and plays an important role in regulating skeletal muscle activity.

motor end plate