Types of Aneuploidy

Nullisomy is the loss of both members of a homologous pair of chromosomes. It is represented as 2n-2.

Monosomy is the loss of a single chromosome, represented as 2n-1. 

Trisomy is the gain of a single chromosome, represented as 2n+1. 

Tetrasomy is the gain of two homologous chromosomes, represented as 2n+2. 

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#Id: 5418

#Unit 7. System Physiology – Animal

Ependymal cells are ciliated-epithelial glial cells that develop from radial glia along the surface of the ventricles of the brain and the spinal canal & play a critical role in cerebrospinal fluid homeostasis, brain metabolism, and the clearance of waste from the brain.

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#Unit 7. System Physiology – Animal

Neurons generally have four important zones:

A dendritic zone, where multiple local potential changes generated by synaptic connections are integrated. a site where propagated action potentials are generated. an axonal process that transmits propagated impulses to the nerve endings the nerve endings, where action potentials cause the release of synaptic transmitters.

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#Unit 7. System Physiology – Animal

Types of neurons Based on the number of processes that emanate from their cell body, neurons can be classified as unipolar, bipolar, and multipolar.

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#Id: 5421

#Unit 7. System Physiology – Animal

Unipolar neurons have one process, with different segments serving as receptive surfaces and releasing terminals.

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#Id: 5422

#Unit 7. System Physiology – Animal

Bipolar neurons have two specialized processes: a dendrite that carries information to the cell and an axon that transmits information from the cell.

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#Id: 5423

#Unit 7. System Physiology – Animal

Pseudo-unipolar cells develops, a single process splits into two, both of which function as axons one going to skin or muscle and another to the spinal cord.