As the main vagus nerves continue into the thorax they become intimately linked with the esophagus and sympathetic nerves from the sympathetic trunks to form the esophageal plexus.
32.
The cardiovascular centres receive input from a series of visceral receptors with impulses traveling through visceral sensory fibers within the vagus and sympathetic nerves via the cardiac plexus.
33.
The pampiniform plexus, testicular artery, cremasteric artery, artery of the ductus deferens, lymphatic vessels, testicular sympathetic nerves, and ductus deferens all run deep to the internal spermatic fascia.
34.
Its mechanism of action is the inhibition of neurotransmitter release from sympathetic nerve terminals, both by the inhibition of action potentials in the nerve terminals and by other mechanisms.
35.
The only noticeable changes in the participants were physical, such as activation of the sympathetic nerve impulse, which creates constriction of the blood vessels and dilation of the bronchioles.
36.
But Corey's hands are warm and dry today, thanks to an operation called sympathectomy, in which surgeons snip the sympathetic nerve chain that is linked to the excessive sweating.
37.
He is known for his anatomical and physiological investigations of the autonomic nervous system, discovering that sympathetic nerve stimulation brings about pupillary dilatation and that oculomotor nerve stimulus produces constriction.
38.
In support of this, Axelrod and Georg Hertting ( born 1925 ) showed that freshly incorporated 3 H-noradrenaline was re-released from the cat spleen when the sympathetic nerves were stimulated.
39.
Sympathetic nerves arise from near the middle of the spinal cord in the intermediolateral nucleus of the lateral grey column, beginning at the first thoracic ganglia extending alongside the spinal column.
40.
Each table displays a different part of the human body-vagi and sympathetic nerves, and the veins of the lungs and the liver; and the fourth shows the distribution of the veins.
