The healthy human brain consists of billions of neurons. These neurons process the information and transmit the information in the form of various chemical and electrical signals. The neurons help exchange the information between the various parts of the brain, and between brain and the various parts of the body through the peripheral nervous system. The Alzheimer's disease disrupts this communication, resulting in the loss of function of neurons and eventual death of the neuronal cells.
Neurofibrillary tangles are abnormal accumulation of the tau proteins inside the neuron. The tau proteins are present in the ends of the microtubules that form the skeleton of the neurons. When the tau proteins detach from the microtubules and agglomerate, it leads to the tangling of the microtubule fibres inside the cell. This tangle hampers the transmission of signal through the body of the neuron.
The answer is b
It builds muscles
Answer:
Simple cell
Explanation:
Simple cells are found in primary visual cortex and are made up of large number of receptive fields from neurons and the respond to light at specific Orientation and oriented edges. The cells were discovered by Torsten Wiesel and David Hubel in the late 1950s. The simple cells respond to stimuli with some particular orientations to objects within their receptive fields. Receptive fields comprises of sensory receptors in the sensory neurons that draw out neurosonal responses when there are stimulated
Because it can respire anaerobically, without oxygen.
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Answer:
2n to n, n to 2n
Explanation:
Meiosis is known as reductional division because in meiosis the chromosome number gets reduced to half in daughter cells so when sperm and egg cells undergo meiosis than the chromosome numbers get reduced from 2n to n. In humans, the chromosome number is 46 and it gets reduced to 23 after meiosis.
When egg is fertilized by the sperm than the two chromosomes comes in the same cell and the number goes from n to 2n that mean in human it goes from 23 to 46.
