What is the function of nucleus gracilis?
What is the function of nucleus gracilis?
The gracile nucleus carries information from the lower torso and the lower limbs. The cuneate nucleus carries information from the upper body and the upper limbs.
What does the fasciculus gracilis do?
Fasciculus gracilis carries sensory information associated with the DCML pathway from the lower extremities and terminates and synapses at the nucleus gracilis in the caudal medulla. It is located medial relative to the fasciculus cuneatus and travels all along the spinal cord.
What type of information is carried in the gracile fasciculus?
As sensory information travels from the lower half of the body to the spinal cord, it enters along the gracile fasciculus. is responsible for transmitting sensory information from the upper portion of the body (the upper limbs, trunk, and neck) to the spinal cord at the level of the neck.
Where is nucleus gracilis located?
midline dorsal medulla
The gracile nucleus, along with the cuneate nucleus, is a part of the dorsal column medial lemniscus pathway (DCML). The gracile nucleus situates in the midline dorsal medulla at the junction of the brainstem and the spinal cord.
What happens if the fasciculus gracilis is damaged?
Damage to the left fasciculus gracilis at T8 causes the absence of light touch, vibration, and position sensation in the left leg and lower left trunk.
What is a gracilis?
The gracilis is a spiral unipennate muscle in the medial thigh compartment. The gracilis: Assists with hip adduction, knee flexion, and knee internal rotation. It is innervated by the anterior branch of the obturator nerve. Crosses at both the hip and knee joints.
Is the gracile fasciculus gray or white matter?
They are known as nerve tracts or fasciculi and are found within the white matter of the spinal cord.
Is fasciculus gracilis white matter?
The dorsal column (fasciculus gracilis and fasciculus cuneatus of mammals) (Figure 9-5) consists of a collection of white matter fibers that originate from afferent neurons, whose cell bodies are in the dorsal root ganglion.