Autonomic Nervous System (3) Flashcards
What are the similarities between the somatic and visceral efferents?
Effect on muscles
Exit through ventral root
Spinal nerves
Does the autonomic nervous system have sympathetic and parasympathetic afferents?
No
What are the sympathetic actions of the head/neck?
Pupil dilation
Decreases secretions
What are the sympathetic actions of the heart?
Increase HR and force of contraction
Vasodilates coronary vessels
What are the sympathetic actions of the lungs?
Bronchodilation
Decreases secretions
What are the sympathetic actions of the limbs?
Vasomotor
Sweating
Piloerection
What are the sympathetic actions of the liver?
Breaks down glycogen
What are the sympathetic actions of the GI/GU?
Ejaculation
Decreases urination
Vasoconstrict blood vessels in GI system
Decreases peristalsis
What are the sympathetic actions of the adrenal medulla?
Single neuron system to release adrenaline
What are the parasympathetic actions of the head/neck?
Pupil constriction
Accommodation of lens
Increases secretions
What are the parasympathetic actions of the heart?
Decreases HR and force of contraction
Vasoconstriction of coronary vessels
What are the parasympathetic actions of the lungs?
Bronchoconstriction
Increases secretions
What are the parasympathetic actions of the limbs?
Nothing
What are the parasympathetic actions of the liver?
Glycogen synthesis
What are the parasympathetic actions of the GI/GU?
Increases peristalsis and secretions
Increases urination
Increases blood flow for erection
Increases lubrication for vagina
What does autonomic innervation to the limbs include?
Sympathetic innervation
Where do the bodies of the lateral and medial corticospinal tracts live?
Primary motor cortex (frontal lobe)
Where does force production occur in the brain?
Primary motor cortex
What does the ganglia contain?
Cell bodies
What does the pre vertebral ganglia do?
Takes info to abdominal pelvic region
What do the cardiopulmonary and abdominopelvic splanchnic do?
Sympathetic info to the organs
How does the parasympathetic carry information?
Via cranial nerves
What would be impairments in someone with autonomic dysfunction?
High HR
Cannot regulate body temp
Fatigue
Sexual dysfunction
What can carry visceral afferent information?
Cranial nerve 9
Vagus
Abdominopelvic splanchic
Cardiopulmonary splanchic
Pelvic splanchic
Where are the cell bodies of the SNS?
Lateral horn of T1-L2/3
Where are the cell bodies of the pelvic splanchic?
Lateral horn of S2-S4
What carries PNS information?
Vagus nerve
