ANS physiology
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- Which nervous system innervates skeletal muscle & controls voluntary movement?
- somatic nervous system
- 2 main neurotransmitters of the ANS are?
- acetylecholine and norepinerine
- Nerve fibers secreting norepinephrine are called?
- adrenergic fibers
- Nerve fibers that secrete acetylcholine are called?
- cholinergic fibers
- Neurotransmitters, medications or hormones that bind to receptors are collectively called?
- ligands
- Increased arterial blood pressure is a specfic response of which branch of the autonomic nervous system?
- SNS (sympathetic nervous system)
- Pupil dialation is a specific body response of which branch of the ANS?
- SNS
- Responses of this branch of the ANS are protective mechanisms designed to help the person cope with the stress or get away from it?
- SNS (sympathetic nervous system)
- Which 2 neurotransmitters of the SNS also function as hormones?
- norepinephrine & epinephrine
- Norepinephrine acts mainly on which adrenergic receptors?
- alpha
- Epinephrine acts mainly on which adrenergic receptors?
- alpha and beta
- Which adrenergic receptors are located in the brain, kidneys & other viscera?
- dopaminergic (dopamine) receptors
- Primary response to stimulation of this adrenergic receptor is vasconstriction & gyconeonolisys, gluconeogensis
- alpha 1
- Primary response to stimulation of this adrenergic receptor is vasconstriction & inhibition of insulin release?
- alpha 2
- Increased blood sugar is a specific body response of which branch of the ANS?
- SNS
- Increased capacity for vigorous muscle activity in response to a perceived threat, whether real or imaginary, is often called the fight-or-flight reaction and refers to which branch of the nervous system?
- SNS (sympathetic nervous system)