Quiz 1 Flashcards
Peripheral nerve regeneration is an incredibly slow process. It has been found that the nerves regrow at which of the following speeds?
- 1cm/day
- 1cm/week
- 1mm/day
- 1mm/week
- 1in/week
1mm/day
The directional term dorsal is analogous to ________ for the brain, and ________ for the trunk?
- anterior and posterior
- superior and posterior
- inferior and anterior
- posterior and anterior
superior and posterior
Which of the following neuron fiber classifications would take into account both fiber diameter and myelin thickness to produce the FASTEST action potential propogation speed.
- Type A
- Type I
- Type C
- Type IV
Type A
a
a
Soma of viscerosensory neurons are located in which of the following structures?
- dorsal root ganglia
- dorsal horn
- sympathetic chain ganglia
- ventral horn
dorsal root ganglia
Short-term habituation is due to which of the following?
- Results in changes pre-synaptically, including a decrease in release of excitatory neurotransmitters.
- Results in changes pre-synaptically, including an increase in release of excitatory neurotransmitters.
- Results in changes post-synaptically, including modification of the post-synaptic receptors as well as proteins being synthesized.
- Results in changes post-synaptically, including the number of the post-synaptic receptors as well as proteins being synthesized.
Results in changes pre-synaptically, including a decrease in release of excitatory neurotransmitters.
What glial cell type acts at synapses in the CNS to affect the amount of neurotransmitter in the synapse?
- microglia
- schwann cells
- astrocytes
- ependymal cells
astrocytes
Injury to which of the following structures would affect PRIMARILY dermatomes and myotomes on the back?
- spinal nerve
- dorsal horn
- ventral root
- dorsal rami
dorsal rami
NMDA Receptors are referred to as “Coincidence Receptors” due to:
- They require the opening of different receptors (AMPA receptors) to facilitate their opening
- They require both a pre and post-synaptic event for their channels to open
- They have a magnesium blockade
- They are permeable to both Calcium and Sodium, which when allowed into the post-synaptic cell via their channels, causes a cascade of post-synaptic cellular events
They require both a pre and post-synaptic event for their channels to open
a
a
CSF flows FROM the lateral and medial apertures into which of the following compartments?
- fourth ventricle
- subarachnoid space
- superior saggital sinus
- cerebellomedullary cistern
subarachnoid space
Which of the following connective tissue coverings of a nerve would MOST LIKELY be continuous with the covering and contents of a neurovascular bundle?
- perineurium
- pia mater
- epineurium
- adventitia
-epineurium
