Medsci 142 Comprehensive Exam Questions And Complete Answers.
4 views 0 purchase
Course
MEDSCI 142
Institution
MEDSCI 142
dermatome - Answer area which each nerve from the spinal cord goes to
how many dermatomes? - Answer 30. despite 31 pairs as C1 doesn't reach the skin.
discriminative sensation - Answer touch and pressure sensations. from the peripheral receptors they are myelinated by swhann cells. t...
Medsci 142 Comprehensive Exam
Questions And Complete Answers.
dermatome - Answer area which each nerve from the spinal cord goes to
how many dermatomes? - Answer 30. despite 31 pairs as C1 doesn't reach the skin.
discriminative sensation - Answer touch and pressure sensations. from the peripheral receptors they
are myelinated by swhann cells. travel 50ms-1. From an "onion" of connective tissue". Travel past root
ganglion (containing cell body) and divide to brain and spinal cord.
meissner corpuscle discriminative - Answer nerves for touch sensations
pacinian corpuscles discriminative - Answer nerves for pressure sensations
pain and temperature - Answer non-encapsulated nerve endings. non-discriminative: pain and temp is
not localised
cervical nerves - Answer 8 pairs
thoracic nerves - Answer 12 pairs
lumbar nerves - Answer 5 pairs
sacral nerves - Answer 5 pairs
coccygeal nerves - Answer 1 pair
dorsal root ganglion - Answer cluster of cell bodies which contain nuclei and organelles. supports the
health of the neuron by creating enzymes and realising neurotransmitters.
, function is to relay sensory information from peripheral nerves to CNS.
peripheral nerve fibre fork - Answer for touch and pressure the nerve divides, one to the brain, the
other to the spinal chord. For pain and temperature, the nerve enters the spinal chord and to the lower
motor neuron therefore reflex actions can occur quickly. (we move without even thinking it when
touching something hot).
non-discriminative sensation - Answer pain and temperature sensations. non-myelinated. nerve
impulses travel at 1ms-1 past root ganglion to dorsal grey horn.
anatomy of the spine - Answer made up of verterbrae and intervertebral discs which help absorb shock
spinal meninges - Answer layers of connective tissue which surround the spinal chords
1) pia mater (inner layer)
2) arachnoid mater (middle layer)
3) dura mater (outer layer)
spinal cord anatomy - Answer spinal cord contains bundle of nerves fibres within the spinal canal
(spinal meninges)
spinal nerves - Answer body has 31 spinal nerves, and each nerve innervates a specific area of skin
known as dermatomes. Only 30 dermatomes as the C1 does not innervate the skin.
lower motor neurons - Answer have cell bodies in brain stem and spinal cord.
from brain steam, LMN axons extend through cranial nerves to innervate muscles of the face and head.
from spinal cord, LMN axons extend through spinal cords to innervate muscles of the limbs and trunk
Upper motor neurons - Answer Upper motor neurons synapse with local circuit neurons which in turn
synapse with lower motor neurons.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller TestSolver9. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R176,74. You're not tied to anything after your purchase.
