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What are the functions of the four lemnisci in the Pons?
Lateral lemniscus = carrying hearing impulsesfrom both ears (mainly from the opposite side)Spinal lemniscus = carrying pain, temperature and crude touch (from the opposite side of the body, below the head)Trigeminal lemniscus = carrying pain, temperature, touch and proprioception (from the opposite side of the face and scalp)Medial lemniscus = carrying proprioceptive and fine touch (from the opposite side of the body, below the head)
Where do sensory nerve fibers enter the spinal cord?
The dorsal column or medial lemniscus.
What is the difference between medial medullary syndrome and lateral medullary syndrome?
Medial medullary syndrome : caused by obstruction of anterior spinal arteryLateral medullary syndrome : caused by obstruction of posterior inferior cerebellar artery, or vertebral artery
What spinal tracts are damaged to cause loss of sensation in the arm?
The lateral aspect of the upper arms involve C5 and the medial aspect of the lower arms involve T1.
What is a fasciculus cuneatus?
The fasciculus cuneatus is a bundle of nerve fibers in the spinal cord that carries sensory information related to touch, pressure, and proprioception from the upper body and upper limbs to the brain. It is part of the dorsal column-medial lemniscus pathway in the central nervous system.
Of the following what structures are the MOST medial?
To determine which structures are the most medial, we need to identify their positions relative to the midline of the body. Typically, structures such as the spinal cord, brainstem, and certain midline organs like the heart and stomach are considered medial. In contrast, peripheral structures like the arms and legs are more lateral. Specific examples or options would help in accurately identifying the most medial structures.
What are the tracts and decussation that can be found in tegmentum of the midbrain?
the four lemnisci = medial, spinal, lateral and trigeminalsuperior cerebellar pedunclesdecussation of superior cerebellar penduclestectospinal tractrubrospinal tractcentral tegmental tractdorsal longitudinal fasciculusmedial longitudinal bundle
Do the kidney lie lateral frontal distalor or transverse to the spinal cord?
Lateral
What spinal curvature would happen if your torso got thrown into a lateral flexxion?
What spinal curvature will result when you throw your torso into lateral flexion?
Which bone's medial end articulates with the sternum and its lateral end articulates with the scapula?
The clavicle. This bone is normally not consideredto be part of the shoulder an instead a part of the thorax, which is also true. The reason it is part of the shoulder is that it joint part of the scapula to form the soked of the glenohumeral joint.
A lateral tract in the spinal cord would be?
Rubrospinal
What are the nuclei of the grey matter of spinal cord?
nuclei of the posterior horn (sensory) = substantia gelatinosa of Rolandi + Nucleus proprius + Clark's dorsal nucleusnuclei of the anterior horn (motor) = 2 medial + 1 central + 2 lateral groupsnuclei of the lateral horn (autonomic) = sympathetic (T1-L2/L3) + parasympathetic (S2-S4)
