Table of Contents
What is fasciculus gracilis and fasciculus cuneatus?
The gracile fasciculus carries sensory information from the lower half of the body entering the spinal cord at the lumbar level. The cuneate fasciculus carries sensory information from the upper half of the body (upper limbs, trunk, and neck) entering the spinal cord at the cervical level.
What is the cuneate fasciculus?
Acronym: The term cuneate fasciculus refers to a bundle of ascending fibers that make up the lateral portion of the posterior white column of the spinal cord. The fibers originate in the upper thoracic segments and cervical segments of the cord and terminate in the cuneate nucleus of the medulla ( Carpenter-1983 ).
What does fasciculus gracilis mean?
Medical Definition of fasciculus gracilis : either of a pair of nerve tracts of the posterior funiculus of the spinal cord situated on opposite sides of and immediately adjacent to the posterior median septum and carrying nerve fibers from the lower part of the body. — called also gracile fasciculus.
Where is the cuneate fasciculus?
The cuneate fasciculus (tract of Burdach), located laterally in the upper thoracic and cervical (C1 to T6) spinal cord segments, contains afferents from the upper trunk and extremities.
What is a fascicle biology?
Each fascicle (or fasciculus) is a bundle of muscle fibers, also called myocytes, bound together via the endomysium tissue that provides pathways for the passage of blood vessels and nerves.
What is contained in the fasciculus cuneatus?
fiber bundle that carries tactile and proprioceptive information from the upper limbs and torso, the fasciculus cuneatus is part of the posterior columns and terminates in the nucleus cuneatus.
What is fasciculus medical term?
Medical Definition of fasciculus : a slender bundle of fibers: a : a bundle of skeletal muscle cells bound together by fasciae and forming one of the constituent elements of a muscle.
What does the term fascicle mean?
Definition of fascicle 1 : a small or slender bundle (as of pine needles or nerve fibers) 2 : one of the divisions of a book published in parts.
What is another word for fascicle?
In this page you can discover 12 synonyms, antonyms, idiomatic expressions, and related words for fascicle, like: group, bundle, cluster, installment, bunch, collection, fasciculus, fiber bundle, fibre-bundle, fascicule and graecorum.
What is the difference between fascia and fascicle?
fascia: A sheet of thick connective tissue which surrounds a muscle. endomysium: A sheet of connective tissue which wraps each fascicle. fascicle: A group of muscle of fibers surrounded by the perimysium.
What is the function of the fasciculus Cuneatus?
Function. The cuneate fasciculus is responsible for transmitting vibration, conscious proprioception, and fine (discriminative) touch sensations from the upper body 1.
Where does the term etymology come from?
“Etymology” derives from the Greek word etumos, meaning “true.” Etumologia was the study of words’ “true meanings.” This evolved into “etymology” by way of the Old French ethimologie.
What is a bundle of fascicles called?
Each bundle of muscle fiber is called a fasciculus and is surrounded by a layer of connective tissue called the perimysium. Within the fasciculus, each individual muscle cell, called a muscle fiber, is surrounded by connective tissue called the endomysium.
What is the meaning of cuneate fasciculus?
Medical Definition of fasciculus cuneatus. : either of a pair of nerve tracts of the posterior funiculus of the spinal cord that are situated on opposite sides of the posterior median septum lateral to the fasciculus gracilis and that carry nerve fibers from the upper part of the body. — called also column of Burdach, cuneate fasciculus.
What does fasciculus mean in anatomy?
fasciculus cu·ne·atus | -ˌkyü-nē-ˈāt-əs . : either of a pair of nerve tracts of the posterior funiculus of the spinal cord that are situated on opposite sides of the posterior median septum lateral to the fasciculus gracilis and that carry nerve fibers from the upper part of the body.
What is the function of the funiculus cuneatus?
fasciculus cuneatus. The more lateral of the two large ascending axon tracts that fill the dorsal funiculus of the spinal cord. The fasciculus cuneatus contains dorsal root ganglion cell axons transmitting discriminative sensations from the ipsilateral arm, shoulder, and neck. See also: fasciculus.
What is the difference between the posterior funiculus and the fasciculus?
the larger lateral subdivision of the posterior funiculus. The more lateral of the two large ascending axon tracts that fill the dorsal funiculus of the spinal cord. The fasciculus cuneatus contains dorsal root ganglion cell axons transmitting discriminative sensations from the ipsilateral arm, shoulder, and neck.