Concept explainers
To discuss:
The path of the vagus nerve and the names and locations of the plexus and trunks to which it gives rise.
Introduction:
Vagus nerve is the tenth cranial nerve of the autonomic nervous system. It is a parasympathetic nerve fiber that arises from the medulla pons. Being the longest nerve fiber of the nervous system, it accounts for nearly 90% of preganglionic fibers with it, and it tends to innervate all the vital organs like hear, kidney,
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Chapter 15 Solutions
LSC (CONCORDIA UNIV ST PAUL) BIO 315/316: B&N DPF Connect with APR and Phils Online Access for Anatomy and Physiology: The Unity of Form and Function 180 Day Access ENTRP
- How autonomic efferent pathways differ from somatic efferent pathways; the meanings of preganglionic and postganglionic fibers .arrow_forwardthe function of the autonomic system and the sympathetic and parasympathetic function (easy and simple in words)arrow_forwardLocations of the gray and white matter in the cerebrum and cerebellum; the composition of gray and white matter and how this relates to their colors; and the meaning of cortex, nucleus, and tract in relation to brain gray and white matterarrow_forward
- Most parasympathetic preganglionic fibers are found in the________ nerve.arrow_forwardTrue or False; a unique feature of the optic tract compared to other cranial nerves is that it is an extension of the brain and are covered in meningeal layers.arrow_forwardWhat clinical disorder results from a deficiency of the neurotransmitter substance associated with melanin pigment in the substantia nigraarrow_forward
- Radial nerve (easily viewed in the proximal posterior arm between long and lateral heads of triceps brachii) Â The radial nerve innervates the: brachioradialis, extensor carpi radialis longus and brevis, extensor carpi ulnaris, extensor digitorum, extensor digiti minimi, abductor pollicis longus, extensor pollicis longus and brevis, and extensor indicis. What is the name of the muscle compartment that houses most of these muscles? ____________________.arrow_forwardHow one action potential triggers another; how the continuous conduction seen in unmyelinated nerve fibers result from a chain reaction of action potentials; and what normally prevents the signal from traveling backward to the neurosoma.arrow_forwardSpinal column. Its morphology and possibilities of movement.arrow_forward