Dr. Houston (Neuro)-Exam 3 Flashcards
What are the subdivisions of the nervouse system?
What are the different horns and roots of the spinal cord? What horn is special and why?
Lateral horn – serves SNS. Only in thoracolumbar spinal cord
What are descending and ascending tracts?
What are each track for:
* Lateral corticospinal
* Dorsal columns
* Lateral spinothalamic
* Ventral spinothalamic
- Lateral corticospinal: motor
- Dorsal columns: Fine touch, propioception, vibration
- Lateral spinothalamic: pain and temperture
- Ventral spinothalamic: light touch
What is the diencephalon?
the thalamus, hypothalamus, and epithalamus
What connects L + R hemispheres?
What makes up the epithalamus?
- Corpus callosum
- Habenula and pineal gland
What are the different ventricles?
What are the layers of the meningeal layers
Where is white vs gray matter in the brain??
What is the directions of the commissural, association and projection tracts?
- Commissural: Left to right to different hemispheres
- Association: Anterior to posterior-> different lobes
- Projection tracts: superior to inferior
Tracks=nerves-
How many different layers are there in the brain?
6
What do astrocytes, ependymal cells, microglia, oligodendrocytes do?
- What are the motor and sensory parts of the brain?
- What and where are the broca and wernicke’s area
What are the different components of the spinal cord?
What are the different layers of a nerve?
What is the process of nerve impulse?
What are the different components of neuron?
What is the cervical plexus?
What is the brachial plexus?
What is the lumbar plexus?
What is the lumbosacral plexus?
What division does the PNS have and what are the characteristics?
What division does the SNS have and what are the characteristics?
What has tonic activity?
BVs (smooth muscle) is only SNS therefore you need to increase or decrease the freq of AP for VC/VD
What are the ganglion that is apart of SNS?
What are the ganglion that is apart of SNS?
What are the NTs to skeletal muscle, various organs via SNS, sweat glands and various organs via PNS?
Fill in for PNS and SNS
Fill in for PNS and SNS
Fill in covered part
Fill in covered part
Fill in covered spot
What are the areas that are big and small for sensory?
What are the areas that are big and small for motor?
What are the ascending tracts? What are the order neurons?
What are the descending tracts? What are the order neurons?
What is the posterior columns, spinothalamic tract and corticospinal tract?
What is the excitation contraction pathway?
WHat are the inn. of eye?
What is the CN 3 a part of (reflex)? How does that work?
Pupillary light reflex: direct and consensual response
What muscles contract/reflex in the eyeswith SNS and PNS
CN V injury
* Paralysis of what?
* Lostt of what? (2)
- Paralysis of muscles of mastication (temporalis, medal and later pterygoid and masseter m)
- Loss of facial general sensation
- Loss of the corneal reflex
When is there a lost of corneal reflex?
Lesion of ophthalmic nerve (CN V1) or the facial nerve (CN VII)
CN VII
* What is the sensory and speical sensory?
CN VII
* What is the parasympathetic?
* What is the motor part?
Stapedius muscle: dampens sound
What are the components of CN VIII
Important for hearing, balanc and equilibrium
Why is CN XI susceptible to injury during surgical procedures?
CN XI
* What is the result of lesion?
* What is impaired? (2)
CN XII
* What does injury to CN XII cause?
* What happens after some time?
What happens when there is a lesion on CN XII?
