Autonomic nervous system Flashcards
What is the Autonomic Nervous System
- Carries out functions involuntarily
- Maintains homeostasis and constant internal environment
- Digestion:
Autonomic neurons innervate a network of neurons in the wall of the gastrointestinal tract known as the enteric nervous system
Neuron
A nerve cell
Responsible for receiving sensory input from the external world and relaying motor commands to our muscles
Transforms and relays electrical signals between steps
- Nerve fibre:
axon of a neuron
nerve
A bundle of fibres/axons that transmit impulses of sensation to the brain or spinal cord AND impulses from the brain and spinal cord to muscles, tissues, and organs
- The Afferent or Sensory Division
detects stimuli and relays sensory information to the central nervous system
Somatic sensory
Transmit information from sensory receptors such as the skin, muscles, and joints to the CNS
Visceral sensory:
Visceral sensory: Monitors internal organ activities and conveys this information to the CNS
Special sensory
Carry information about the senses (vision, hearing, smell, and taste) to the CNS
afferent
somatic motor
autonomic motor
ANS reflex arc
cranial nerves
spinal nerves
cervical
thoracic
lumbar
sacral
coccygneal
somatic nervous system
autonomic nervous system