Random questions Flashcards
In the autonomic nervous system acetycholine is the neurotransmitter to what areas?
- Parasympathetic preganglionic and postganglionic fibers
- Sympathetic preganglionic fibers
- Sympathetic postganglionic fibers to the sweat glands
- Sympathetic postganglionic fibers to other organs is NE
Norepinephrine is the neurotransmitter in what part of the autonomic nervous system?
Postganglionic sympathic fibers to the major organs
What is the speed of contraction in muscle fibers dependent on?
- The rate of calcium uptake
- Fast twitch fibers have more extensive sarcoplasmic reticulum and thus have more abundant Calcium - Magnesium adenosine triphosphatase which modulates calcium utilization
Monomelic amyotrophy is frequently associated with atrophy of what?
Cervical spinal cord
What is the definition of orthostatic hypotension?
In the first 2 to 5 minutes after laying down for 5 minutes
- Drop in systolic BP of at least 20
- Drop in diastolic BP of at least 10
Definition of POTS
Orthostatic symptoms in correlation with:
- Increase in HR by at least 30 bpm (40 if < 20 y/o) within 10 minutes after standing or head up tilt
- No significant drop in BP
- Patient should be laying down for 5 minutes prior to testing
On tilt table testing, what does Phase II Late and Phase IV of the valsalva waveforms give you information on?
Adrenergic function
In transcranial electrical stimulation (TES) what are the generators of D waves and M waves?
- D waves = Propagating action potentials in the spinal cord
- M waves = CMAPs generated within the muscles
