Nervous System overview Flashcards
CNS vs PNS
Central nervous system (CNS) = brain + spinal cord
Peripheral nervous system (PNS) = cranial and spinal nerves
Somatic nervous system vs Autonomic nervous system
Somatic nervous system = Controls skeletal muscle under voluntary control and includes incoming sensory (afferent) and outgoing motor (efferent) fibres from the brain and spinal cord.
Autonomic nervous system = A division of the peripheral nervous system that controls internal organs (Heart rate, digestion, respiration) and also the fight or flight response.
Can be subdivided into sympathetic and parasympathetic divisions.
Sympathetic division vs Parasympathetic division
Sympathetic division works to stimulate nervous activity (pre and post ganglionic neurons)
Parasympathetic division works to slow the nervous system down
Define ganglia, role and examples
Ganglia refers to a group of nerve cell bodies or a nerve cluster that occur in the PNS.
Ganglia act as intermediates between the CNS and PNS.
Examples: Dorsal root ganglia, cranial nerve ganglia and autonomic ganglia)
define plexus and example
Plexus refers to a branching network of nerves or vessels (examples: cervical, brachial, lumbar and sacral plexus)
cranial nerve III, VII, IX, X, S4
- region of spinal cord
- Associated nerves and terminal ganglia
- target organs
III:
Eddlinger-Weslphal nucleus
- Cilary ganglion
- Eyes
VII
Super salivatory nucleus
- Pterygoalatine ganglion and submandibulara ganglion
- lacrinal gland, mucous membrane (nose and palate)
IX
Inferior salivatory nucleus
- Otic ganglion
- Submaxilary and sublingual glands
X
Dorsal nucleus of the vagus and nucleus ambigiouus
- heart, larynex, trachea, bronchi, esphogaus, stomach, abdominal blood vessels, live and bile duct, pancreas, adrenal gland, small intestine, large intestine, rectum
S4:
Spinal cord
- Coccygeal gangila
- large intestine, rectum, kidney, bladder, gonads, external gentila
Brachial plexus is where
c5-t1
draw the spinal cord (looking down)
Lecture slide
