These are the brain, heart, kidneys, liver, and lungs. The human brain is the body's control center, receiving and sending signals to other organs through the nervous system and through secreted hormones.
For the beetle genus, see Coprini. Synapsis (also called syndesis) is the pairing of two homologous chromosomes that occurs during meiosis. It allows matching-up of homologous pairs prior to their segregation, and possible chromosomal crossover between them. Synapsis takes place during prophase I of meiosis.
Prophase is an involved process and while the chromosomes are visible throughout, they look different depending on the stage of the process the cell is in. During early prophase, the chromosomes are working to condense and shorten in preparation for cell division and they appear under the microscope as a condensed mass; it is hard to distinguish individual chromosomes at this point.