The nervous system 2 Flashcards
What motor is involved in the somatic system?
The somatic motor.
What motor is involved in the autonomic system?
The visceral motor.
What are the four different divisions of the spinal nerves?
Cervical, thoracic, lumbar and sacral.
What are the different touch and visceral inputs into the CNS?
Mechanoceptors, proprioceptors, nociceptors, thermoceptors and chemoceptors.
What are nociceptors?
Receptor for painful stimuli.
What are proprioceptors?
Receptor that receives stimuli from the internal body, such as position and movement.
What are the three different types of neuron?
Unipolar, bipolar and multipolar - varies on how many extensions exist from the cell body.
What is the common integrative centre in reflex arcs?
The spinal cord.
What is the fastest and largest sensory neurone?
Those of priproceptors of skeletal muscle.
What are dorsal roots?
Spinal nerves that emerge from the spinal cords.
What are glial cells?
Cells that produce myelination of neurones in the central nervous system - they are the same as Schwann cells in the peripheral nervous system.
What are the functions of glial cells?
Support, insulation, buffering and scavenging, guide developing neurones, immune response and blood-brain barrier.
What is cerebrospinal fluid produced by?
Choroid plexus.
What is the total volume of CSF?
120ml.
What is CSF composed of?
Aqueous solution of NaCl and glucose, with low concentrations of K+ and Ca2+.
