exam 2: general ANS(2 lectures in 1) Flashcards
Autonomic Nervous System
involuntary or voluntary?
involuntary
length changes receptors in tendons, ligaments, muscles, joints
Proprioception
Receptors in skin, cornea,
mucosa, hair/feather follicle,
connective tissue.
Tactile and nociception
General somatic: Efferent
how many neurons
one to skeletal muscle
General somatic: Afferent
how many neurons
one
what are the two pathways to produce a visceral effect:
Sympathetic & parasympathetic
General visceral:
Each pathway (sympathetic and parasympathetic) has ______ efferent neurons needed to innervate the target organ
two
General visceral: Parasympathetic
what are the 2 neurons involved
General visceral: Sympathetic
what are the 2 neurons involved
Sympathetic nervous system is related to (high or low) stress?
high stress (fight or flight)
Sympathetic nervous system effect on:
cardiovascular
respiratory
digestive
urinary
reproductive functions
what are some activities/events that increase sympathetic nervous system
Intense physical activities
(Running, Escaping,Hunting)
Protecting
Fighting
FEAR
The part of the autonomic nerve system known as Sympathetic, is organized in a trunk formed by ganglia connected by axons close to the thoracic and lumbar vertebrae known as ___________________ and a group of_____________
sympathetic trunk
group of visceral ganglia connected with the sympathetic trunk by
nerves
Label A and B
A:Sympathetic trunk
B:Visceral Sympathetic ganglia
General Visceral Efferent of Sympathetic is involved with what organs
Smooth mm., heart or/and glands
Sympathetic nuclei lives in ____________________ of spinal cord
Thoracic & lumbar segments
Sympathetic nuclei
what neurotransmitter is released from the preganglion? postganglion?
Pre: Ach
Post: Norepinephrine (similar to epinephrine)
T/F Lateral horns are only in thoracolumbar segments
true
What is being pointed to in orange that travels to the lateral horn
visceral efferent neurons
what kind of neuron is associated with A?
what kind of neuron is associated with B?
A:Visceral afferent neurons
B: Somatic efferent neurons
what are the 3 horns that neurons travel to
dorsal horn
lateral horn
ventral horn
General Visceral Efferent Sympathetic:
Axons that communicate the spinal nn. with the
sympathetic trunk are referred to as _______________
Communicating branches
T/F communicating branches can carry pre and post ganglionic sympathetic fiber
true
what is 1 pointing to? 2?
- Communicating branches
- Sympathetic trunk
General viseral efferent sympathetic:
what are the possible directions that the sympathetic nerve pathways can use to get to target organs involving LIMBS?
1.Neck (Axial) and thoracic
limbs: Smooth mm. and glands of tissues innervated by spinal nerve
- Trunk (Axial) and pelvic
limbs: Smooth mm. and glands of tissues innervated by spinal nerves
General viseral efferent sympathetic:
what are the possible directions that the sympathetic nerve pathways can use to get to target organs involving CAVITIES ?
- Heart, Smooth mm. and
glands of thoracic organs - Smooth mm. and glands of abdominal organs
- Smooth mm. and glands
in pelvis and perineum
General viseral efferent sympathetic:
what are the possible directions that the sympathetic nerve pathways can use to get to target organs involving the HEAD?
Head Smooth mm., and glands
Synapsis occur in a _______________
sympathetic trunk ganglion
the cervicothoracic ganglion as a post ganglion forms this nerve
this nerve provides postganglionic fibers
to cervical spinal nn.
vertebral n.
Communicating branches between the cervicothoracic and the middle cervical ganglia
Ansa subclavian (preganglionic)
The fibers goes around the
subclavian a. that’s why the name
Ansa subclavian (preganglionic)
Correspond to the fusion of the caudal cervical ganglion and the first 3 thoracic ganglia
Cervicothoracic ganglion (preganglionic)
what nerves are being pointed to
cardiac nn.
label 1-3
- Cervicothoracic ganglion
- Ansa subclavian
- Middle cervical ganglion
Sympathetic affects on GI muscle and mucosal secretion
inhibitory
how does sympathetic regulate GI blood flow
via vasoconstriction
T/F NO synapsis in sympathetic trunk ganglia for the fibers that goes toward cavity organs
true
Sympathetic Smooth mm. and glands of abdominal
organs:
Postganglionic nerves
running with _________ to hit the target organ
arteries
Sympathetic Smooth mm. and glands of abdominal
organs: Visceral ganglion
what occurs at the visceral ganglion?
what are the Visceral ganglia close to?
Synapsis occur here
Visceral ganglia lives close
to abdominal aorta and it
branches