Role of acetylcholine (ACh) in peripheral and central
nervous systems:
Acetylcholine (ACh) is an organic chemical
which helps in the functioning of brain and body by acting as a
neurotransmitter.
Its role in peripheral nervous system:
- In the peripheral nervous system, acetylcholine (ACh) causes
the contraction of skeletal muscles.
- It also plays an important role in the signaling of movement of
muscles, learning and formation of memory, sensation of pain,
regulating endocrine system and also in the movement of eyes.
- It activates muscles and also regulates rapid eye movement
(REM) sleep cycle.
Its role in central nervous system:
- In the central nervous system (CNS), acetylcholine (ACh) acts
by inhibiting the action of cholinergic system for transmitting
nerve impulses.
- It causes the contraction of muscles and activates the pain
responses.
- It helps in the functioning of passing cholinergic projections
from the basal forebrain to the cerebral cortex.
- The main role of acetylcholine in central nervous system is
excitatory and it also plays role in memory, neuroplasticity and
learning.
Thank you!