The Nervous System Flashcards
This is the MOTOR component of the AUTONOMIC NS under the influence of the hypothalamus.
Efferent
This is the SENSORY component that enters the dorsal root of the spinal nerves of the SOMATIC NS
Afferent
The SYMPATHETIC NS place of exit from the CNS
THORAX and LUMBAR regions of the spine (thoracolumbar NS)
The function of the SYMPATHETIC NS
Mobilization of bodily resources “FIGHT OR FLIGHT”.
In the VISCERAL NS The POSTganglionic FIBER secretes ____________.
Norepinephrine (NE)
TRUE or FALSE: in the VISCERAL NS the POSTganglionic fiber is relatively short.
FALSE, the POSTganglionic fiber is relatively LONG in the VISCERAL NS
In the VISCERAL NS the PREganglionic fiber secretes _________.
Acetylcholine (ACH)
TRUE or FALSE: in the VISCERAL NS the PREganglionic fiber is relatively short.
TRUE, the PREganglionic fiber is relatively SHORT in the VISCERAL NS
This is composed of 22 sympathetic ganglia
Sympathetic Chain
Axons of MYELINATED PREganglionic FIBER from where they leave the ventral root to where they enter the sympathetic chain.
White Ramus
Axons of NON-MYELINATED POSTganglionic Fiber from sympathetic chain to ventral root.
Gray Ramus
Places of exit from CNS are the brain and the sacral region of the spine (CRANIOSACRAL) and its functions are to conserve and store bodily resources (active after eating).
Parasympathetic NS
In the parasympathetic NS, the preganglionic fiber;
- Enter/Exit from: _________________
- Size: _________________
- Secretes _________________
- From Brain/spine to Collateral ganglion
- Long
- Acetylcholine (ACH)
In the parasympathetic NS, the postganglionic;
- Enter/Exit from: _________________
- Size: _________________
- Secretes _________________
- From Collateral ganglion to organ
- Short
- Acetylcholine (ACH)
This is where fibers cross from one side of the spinal cord to the other.
Gray Commissure
These are found in the lateral area of white matter and consist of short tracts that connect to different levels of the spinal cord.
Ground Bundles
This tract originates in the spinal cord and terminates in the thalamus.
Spinothalamic Tract
This tract originates in the cortex and terminates in the spinal cord.
Corticospinal Tract
These columns are found between dorsal horn and dorsal fissure (SENSORY and AFFERENT).
Dorsal Columns
These columns are found between dorsal horn and ventral horn (SENSORY and MOTOR).
Lateral Columns
These columns are found between the ventral horn and ventral fissure.
Ventral Column
NS classification meaning TOWARD the HEAD.
Rostral
NS classification meaning TOWARD the TAIL.
Caudal
NS classification meaning ABOVE a structure.
Superior
NS classification meaning BELOW a structure.
Inferior
NS classification meaning TOWARD the MIDLINE.
Medial or Proximal
NS classification meaning AWAY from the MIDLINE.
Lateral or Distal
NS classification meaning FRONT.
Anterior
NS classification meaning BACK.
Posterior
This is the FRONT BASE of the brain.
Vental
This is the BACK TOP of the brain.
Dorsal
This is a bundle of neurons OUTSIDE of the CNS.
Nerve
A bundle of neurons located INSIDE of the CNS.
Tract
This is a collection of NERVE CELL BODIES located OUTSIDE of the CNS.
Ganglion
This is a collection of nerve cell bodies located INSIDE of the CNS.
Nucleus
These 2 DORSAL COLUMNS are involved in the SENSORY function of KINESTHESIS.
Gracilis
Cuneate
These 2 LATERAL COLUMNS are involved in SENSORY functions to the CEREBELLUM.
Dorsal Spinocerebellar
Ventral Spinocerebellar
This LATERAL COLUMN is involved in the SENSORY functions of PAIN, TEMPERATURE and diffuse LIGHT TOUCH.
Lateral Spinothalamic
This LATERAL COLUMN is involved in the SENSORY functions PRESSURE and SPECIFIC LIGHT TOUCH.
Ventral Spinothalamic
This LATERAL COLUMN is involved in the MOTOR function of VOLUNTARY MOVEMENT.
Lateral Corticospinal
These 2 LATERAL COLUMNS are involved in the MOTOR function of COORDINATION OF MOVEMENT.
Rubrospinal
Reticulospinal
This VENTRAL COLUMN is involved in the MOTOR function of VOLUNTARY MOVEMENT.
Ventral Corticospinal
This VENTRAL COLUMN is involved in the MOTOR function of COORDINATION OF MOVEMENT.
Vestibulospinal
