Last quiz before final Flashcards
Why is the enteric system’s nervous system special?
Regulated intrinsically by sympathetic and parasympathetics
Do sym/parasym neurons go straight to the effector organ or synapse first in glanglions?
synapse in ganglions
Several different levels of CNS each sharing control over a single target organ is called a….
safety mechanism
What are the 4 Sympathetic receptor types….
a1,a2,b1,b2
What is the single Parasympathetic target receptor types…
Muscarinic
What is the single Somatic receptor types….
Nicotinic
But both sympathetic and parasympathetic give off what pre-synaptic neurotransmitter to what receptor type ALWAYS
Acetylcholine at Nicotinic receptor sites.
At the effector organ, what NT’s synapse w/ the sympathetic (alpha1/2, beta1/2) receptors?
Catecholamines (epi,norepi,dopa)
At the effector organ, what NT synapses w/ the parasympathetic Muscarinic receptors?
Acetylcholine
Neural crest cells (AKA Chromaffin cells) form to become what thing in the adrenals?
They become the adrenal medulla
that secrete 20% epi, 80% norepi
Alpha 1 cells are__________, while Alpha 2 cells are__________?
(options: inhibitory/ excitatory)
Excitatory, Inhibitory
Vasculature, Iris muscles, the bladder sphincter,
the GI tract, and smooth muscles in the skin
are alpha 1 or alpha 2 receptored??
Alpha 1
Platelets, adipocytes, GI tract are alpha 1 or alpha 2?
Alpha 2
SA node, AV node, ventricular muscles are Beta 1 or beta 2?B
Beta 1
Vasculature supplying skeletal muscles, bronchial walls, GI tract, bladder wall are beta 1 or beta 2?
Beta 2
Every receptor throughout the body in any system generally activates or inhibits cAMP, what is the only one receptor type that then works on IP3-CA2+?
Alpha 1 receptors
Are receptors more sensetive to epi or norepi?
epi
We know that sympathetics increase HR activity, constrict GI, decrease GI motility, dilate skeletal peripheral vessels, dilate bronchioles, relax the bladder wall, cause ejaculation, and increase sweating…which one of these is ALSO done in parasympathetic action?
Increased sweating (otherwise, parasympathetics do the opposite of all those)
TRUE or FALSE, parasympathetics have the ability to alter vascular smooth muscle
FALSE! (mediated by sympathetics only!)
she hinted at this as a quiz question
TRUE or FALSE, parasympathetics can alter renin section and/or lipolysis of fat cells?
FALSE!
Vibrations, Skin movement, Joint position, and Fine tuned pressure/touch sensation and localization comes from what afferent system?
Dorsal column system
aka Medial Lemniscus pathway
Pain, Hot/Cold, Crude touch and pressure sensation/localization, tickle/itch, and sexual sensations are all part of what afferent system?
Anterolateral System
Therefore, both Dorsal and Anterolateral tracts of the spinal cord are part of what pathway?
Sensory / Ascending / Afferent
The anterolateral tract only goes _______ the speed of the dorsal column?
a) 1/3 b) 1/5 c) same speed
a) 1/3rd