Nerves Flashcards
What is a tract?
A collection fo axons surrounded by connective tissue and blood vessels. Cn Abe a single modality or mixed modality.
Where are spinal nerves found?
ONLY in the intervertebral foramen
Why is the posterior rami smaller than the anterior rami?
It is supplying a smaller area
TRUE/FALSE
Each spinal nerve is mixed
TRUE
What 5 things are included in general sensory?
Touch Temperature Proprioception Pain Vibration
Define named nerve
Contain axons from one or more spinal level supplying a particular area
What are the 4 named cutaneous innervation of the trunk?
Intercostal nerves
Subcostal nerve
Illiohypogastric & Illioinguinal nerves
What are the named cutaneous innervation of the neck
Lesser occipital nerve
Greater auricular nerve
Transverse cervical nerve
Supraclavicular nevre
Badge patch is from which spinal nerve
C5
Which spinal nerves supplies the dermatomes to the hand
C6- Thumb
C7-Middle finger
C8-Fourth/fifth finger
Groin “hands in pockets” in in the dermatome supplied by which spinal nerve
L1
Knee reflex- what innervation?
L3
Biceps reflex- what innervation?
C5/6
Triceps reflex- what innervation?
C7
Ankle- what innervation?
S1
Define reflex
An involuntary response to stimuli (occurs each time skeletal muscle is stretched- normal muscle tone)
What sensory part of the anterior rami don’t contribute to a plexus ?
T2-T12
What does the cervical plexus supply?
Posterior scalp, neck and diaphragm
What does the brachial plexus supply?
Upper limb
What nerve roots are included in the brachial plexus
C5-T1
What does the lumbar plexus supply?
Lower limb
What does the sacral plexus supply?
Lower limb, gluteal region and perineum
What group of nerves run deep to the midpoint of the posterior border of the SCM
The cutaneous nerves of the cervical plexus
T2-L3 motor axons supply….
Postural back muscles
What is the only section of the spinal cord with lateral horns?
T1-L2
TRUE/FALSE
The adrenal medulla presympathetic axons pass through the aorticorenal ganglion to synapse directly adrenaline/noradrenline secreting cells of the adrenal medulla
TRUE
Which CN’s do the presympathetic axons leave the CNS
III
VII
IX
X
Triad of Horners
Anhydrosis
Ptosis
Myosis
Severe headache + Horners=
Internal carotid dissection
Tight belt syndrome is…
Compression neuropathy of the right cutaneous nerve of thigh
