Practice 1 Flashcards
Which organelle is the site of glycoprotein & lysosome synthesis?
Golgi Body
Patellar reflex is an example of…?
Myotactic reflex
What will happen with distal nerve damage?
Wallerion Degeneration
What is the function of satellite cells?
Cover neuronal cell bodies (PNS only)
Which neuroglia is analogous to white blood cells?
Microglia
Golgi tendon organ is an example of…?
Mechanoreceptor
What senses pain & temperature?
Free nerve endings
Motor supply to the muscle spindles is supplied by…?
Gamma type neurons
Multipolar neurons have several fibers that come off of one…?
Cell body
Which fiber type responds to muscle stretch in patellar reflex?
Alpha
Astrocytoma percentage?
23%
Ependyoma percentage?
8%
Oligodendroglioma percentage?
3%
Cell bodies of sensory neurons are located in…?
DRG
What is the embryological derivative of the PNS?
Crest cells
What is the embryological derivative of the CNS?
Neural tube
Cell bodies of motor neurons are located in…?
Brainstem and Spinal Cord (CNS)
Pseudounipolar cells…?
Modified bipolar, transmits sensory signals to receptors in skin, joints and muscles
Bipolar cells…?
Transmits signals for special senses
Multipolar cells…?
Motor neurons (most common)
Cell bodies of the PNS are made up of…?
Pseudounipolar & multipolar neurons
What is the PNS derived from?
Neural crest cells
What type of neuron is in the dorsal root ganglion made up of?
Psudounipolar
What myelinates the PNS?
Schwann cells
What type of neuron contains multiple fibers branching off of it that carry signals through the brain/spinal cord?
Multipolar
What is the most common type of glioma?
Astrocytoma
The umbilicus is found at dermatome level…?
T10
What are the layers of connective tissue coverings?
Epineurium > Perineurium > Endoneurium
What is the minimum number of neurons involved in a reflex?
2
What type of neurons are found in the ventricular zone?
Pleuripotent stem cells
Satellite cells are similar to ___ in the CNS?
Astrocyte
What type of reflex is the patellar reflex an example of?
Myotactic
What type of motor neuron responds to muscle stretch?
Gamma
What type of reflex involves crossed effects?
Withdraw reflex
Muscle spindles are an example of…?
Stretch receptors
What is a thermoreceptor?
Free nerve ending
Which organelle gives structure to the cell body?
Cytoskeleton
Which layer surrounds the fascicle?
Perineurium
Which nerve fiber is the slowest?
C
Where are golgi tendons found?
Muscle-tendon junctions
How many pairs of spinal nerves are there?
31
What is the functional cell for energy?
Mitochondria
MS is caused by defect of?
Autoimmune attack of myelin
What produces CSF?
Ependymal cells
A strip of skin innervated by a single neuron?
Receptive field
Type A axons are?
Largest in diameter
Type C axons are?
Slowest (unmyelinated)
The type of motor neuron that responds to muscle stretch?
Gamma
Which of the following have free nerve endings?
Thermoreceptors
