Nervous tissue 1
These cells produce CSF
What are ependymal cells
This structure increases the propagation speed of an action potential
Beginning/end of SC
Foramen magnum of occipital bone to L1-2 vertebra
Ventral rami of Cervical Plexus are:
C1-C5
Sciatic nerve is made up of which two nerves
What is common fibular and tibial
What cation enters the axon between Nodes of Ranvier?
What is sodium
RMP (-70 mV) is due to (unequal/equal) distribution of ions across the plasma membrane
What is unequal
Terminal end of spinal cord at about L2
What is conus medullaris
What is Ulnar Nerve
Malignant tracheal / esophageal tumors can cause respiratory distress by putting pressure on which nerve?
What is phrenic nerve?
The endoneurium surrounds which structure?
What is axon
The axon diameter, temperature and amount of myelination all affect what part of an AP?
What is the speed of propagation
Tuft of nerve roots extending from conus medullaris is the?
What is cauda equina
Weakness in latissimus dorsi are due to damage in which nerve?
What is thoracodorsal
The anterior lateral leg muscles and skin are supplied by which nerve?
What is common fibular
A neuron with many short dendrites and a single axon is ____________ whose cell body is in the (PNS/CNS)?
What is multipolar; CNS
Anionic proteins do not have leak channels and cannot diffuse across the membrane. This means they cannot affect change to polarity inside the cell which means it will have little or great influence over the RMP
What is little
Afferent/sensory info is sent to the (PNS/CNS) and
Efferent/motor info is sent to the (PNS/CNS)
What CNS and PNS
John's internal rotator is weak. Upon exam his teres major muscle was identified as the weak muscle. Which nerve supplies this muscle.
What is lower subscapular
A player's Achilles tendon was torn, however, he is still able to weakly plantar flex his foot. What nerve is still intact?
What is Tibial nerve
Neuron cell bodies and dendrites are in which matter?
What is gray matter
The RMP charge difference can exits because the membrane has lipid components that serve as an?
What is an insulator?
Where is a spinal tap normally administered and why?
Between L3-5 to avoid spinal cord/conus medullaris
Damage to this nerve______________ results in a winged scapula due to impairment in which muscle______________?
What is long thoracic and serratus anterior
A patient presents with paresthesia along the anterior antebrachium on the radial side of the hand to the thumb and index finger. This is the C_ dermatomal pattern.
What is C6