Autonomic nervous system Flashcards
What is a cholinergic neuron?
Releases acetylcholine
What nerve care 90% of parasympathetic pre-ganglionic nerve fibers?
Vagus Nerve
What nerves are part of the parasympathetic nervous system?
Oculomotor, Facial, Glossopharyngeal, Vagus
Which neurons in the sympathetic nervous system are cholinergic?
All Pre-ganglionic neurons.
Which neurons in the para-sympathetic nervous system are cholinergic?
All of them?
What is a muscarinic receptor?
????
Are nicotinic receptors inhibitory or excitatory?
Always excitatory
What neurotransmitter is secreted by almost all post-ganglionic fibers of the sympathetic branch of the ANS?
Norepinephrine
Somatic muscle ???
Anterior Grey Horn
ANS ????
Lateral Grey Horn
What is a receptor that binds to norepinephrine called
adrenergic receptor
What is the only thing that is not dual intervention on the parasympathetic side?
The lacrimal gland
What systems are only enervated by the sympathetic nervous system
Kidneys, adrenal glands, blood vessels of king and skeletal muscles sympathetic only,
Which is the only post ganglionic cholinergic neurons in the sympathetic nervous system
The Sweat gland and erector pills of skin.
How do the para-sympathetic and the sympathetic nervous system work in concert?
In producting saliva. The para-sympathetic produce watery saliva. The sympathetic system produces muscus saliva.
How do they work in concert during sex?
Parasympathetic nervous system responsible to for arosal and plateau
Where does the sympathetic nervous system originate?
In the Thoracolumbar region (T1-L2)
Why is the para-sympathetic system called CranialSacral?
It comes from 4 cranial nerves (3,7,9,10) and 3 sacral segments
Pupil constriction and accommodation of the lens is controlled by which system and comes from which cranial nerve
Para sympathetic, cranial nerve 3.
What neurotransmitter do Beta receptors bind?
Norepinephrine
What neurotransmitter do alpha receptors bind?
Epinephrine and Norepinephrine
Are type 1 adrenergic receptors typically excitatory or inhibitory? How does it effect blood flow?
excitatory. Vasoconstrictor decrees blood flow
Type 2 Adrenergic receptor typically excitatory or inhibitory? How does it effect blood flow?
inhibitory. Vasodiolator which increases blood flow.
What is the effect do cAMp in Alpha 2 receptors
inhibitory
What is the effect of cAMP in beta receptors?
excitatory
What does Alpha 1 use to propagate an action potential?
Calcium
