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2 Lower limb. 3 Other. 4 References. 5 See also. Toggle the table of contents. List of abductors of the human body. 18 languages.
Sectional organization of spinal cord. The spinal cord is the main pathway for information connecting the brain and peripheral nervous system. [3] [4] Much shorter than its protecting spinal column, the human spinal cord originates in the brainstem, passes through the foramen magnum, and continues through to the conus medullaris near the second lumbar vertebra before terminating in a fibrous ...
The lateral corticospinal tract (also called the crossed pyramidal tract or lateral cerebrospinal fasciculus) is the largest part of the corticospinal tract.It extends throughout the entire length of the spinal cord, and on transverse section appears as an oval area in front of the posterior column and medial to the posterior spinocerebellar tract.
It is known that another effect of Giant Fiber excitation is limb promotion which suggests that the premotor limb interneurons may be ancestors of the Giant Fibers. It has been speculated that the ancestral escape mechanism was most likely a backwards jump due to the simultaneous protraction of the legs driven by the ancestors of the Giant Fibers.
Step amplitude: the distance a leg travels during swing in a ego-centric reference frame. Step length: the distance from the stance onset to stance onset in a world reference frame. Stride range of motion: the leg's integrated path between stance onset and swing offset. Joint angles: Walking can also be quantified through the analysis of joint ...
Axons from the lower body enter the posterior column below the level of T6 and travel in the midline section of the column called the gracile fasciculus. [5] Axons from the upper body enter at or above T6 and travel up the posterior column on the outside of the gracile fasciculus in a more lateral section called the cuneate fasciculus.
The length of the residual limb is related to the amount of asymmetry in the walking pattern, with longer stumps on average having greater control. [21] Misalignment of joints could result in postures similar to those seen in congenital malformations such as bow-leggedness , knock-knee , pigeon toe , and club foot .
The lower limbs are only in contact with the ground during the stance phase, which is typically subdivided into 5 events: heel contact, foot flat, mid-stance, heel off, and toe off. The majority of stance phase (~40%) takes place in single-limb support where one limb is in contact with the ground and the contralateral limb is in swing phase.