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Are the thalamic nuclei white or gray matter?
the thalamic nuclei is made of unmyelinated axons which are gray matter
Where does sorting and editing of sensory impulses take place?
Thalamic Nuclei
What is the function of the basal nuclei?
The basal nuclei are involved in the planning and execution of movement, as well as in some aspects of cognition and emotion. They help regulate muscle tone, coordinate movements, and inhibit unwanted movements. Dysfunction of the basal nuclei can result in movement disorders such as Parkinson's disease.
Discuss the representation of tactile information in the mammalian cerebral cortex?
The DCML- Dorsal column mediated leminiscal - system is one of the central pathways of the somatosensory system. This system is involved in mediating fine and discriminating touch. A-beta fibrers such as the Meisnerr's corpuscles, Merkel disks, Ruffinni corpuscles and Pacinian corpuscles are involved in this pathway. They are called Tactile fibres. Axons from tactile afferents ascends spinal cord and synapse on the 2nd order of the Dorsal column nuclei of the medulla. Axons of the 2nd order neurons cross to other side of brainstem and ascend to the VP (ventral posterior) complex of thalamic nuclei. The 3rd order of the thalamic nuclei project onto the primary somatosensory cortex of the mammalian brain where the information is processed. The cerebral cortex consists of 2 types of neurons- the pyramidal neurons which is excitatory; and stellate neurons which are excitatory and inhibitory. The 3rd neuron has its cell body still in the VP of the thalamic nuclei and ends in the parietal lobe- the postcentral gyrus.
Is thalamic nuclei gray or white matter?
All of the cerebral cortex is gray matter as it composed of neuronal cell bodies which are not insulated with myelin.
What areas does sorting and editing of impulses take place?
Sorting and editing of impulses take place in the prefrontal cortex, which is responsible for executive functions such as decision making, problem solving, and controlling impulses. Additionally, the amygdala, which is involved in emotional processing, can also play a role in filtering and modulating impulses.
What is thalamic?
it is a beat
What abnormality leads to Parkinson's disease?
loss of substantia nigra cells, as in Parkinson's disease, increases blocking of the thalamic nuclei, preventing them from sending signals to the motor cortex. The result is a loss of movement
What is the fuction on the interthalamic adhesion?
The interthalamic adhesion, also known as the massa intermedia, is a small structure that connects the two thalami in the brain. Its primary function is to facilitate communication between the left and right thalamic nuclei, which play a crucial role in relaying sensory and motor signals to the cerebral cortex. Although its exact function is not fully understood, it may also be involved in the integration of sensory information and the regulation of consciousness. Additionally, it serves as a landmark in neuroanatomy, helping to identify thalamic regions in imaging studies.
What is the icd 9 code for thalamic hemorrhage?
431 is the code for intracerebral hemorrhage. That would include thalamic hemorrhage.
What is the medial nuclei of the thalamus?
It depends on which group of thalamic nuclei that you are referring to.anterior group of nuclei = relay station for hippocampal impulsesmedial group of nuclei = relay station for visceral impulsesanterior ventral group of nuclei = relay station for extrapyramidal impulsesintermediate ventral group of nuclei = relay station for cerebellar impulses concerned with integration of muscle tonepostero-lateral ventral group of nuclei = relay station for exteroceptive impulses & proprioceptive impulses from the opposite side of the body below the headpostero-medial ventral group of nuclei = relay station for exteroceptive and proprioceptive impulses from opposite side of headinterlaminar + midline + reticular nuclei = participate in the arousal reactions of the brain
Do chemical reactions result in the nuclei of the atoms involved?
No, chemical reactions result only in the electrons of the atoms being involved. Only radioactivity results n nuclei of atoms being involved.
