Nervous tissue. Nervous tissue or nerve tissue is the main tissue component of the two parts of the nervous system; the brain and spinal cord of the central nervous system (CNS), and the branching peripheral nerves of the peripheral nervous system (PNS), which regulates and controls bodily functions and activity.
Transmission. Mosquitoes carry the parasite that causes heartworm disease from animal to animal. The life cycle of a heartworm begins when a mosquito bites an infected animal carrying heartworm microfilariae in its blood.If that mosquito bites another cat or dog, it transmits the larvae to that animal.The larvae mature into adult worms in the heart and lungs of the host animal.he life cycle of a heartworm begins when a mosquito bites an infected animal carrying heartworm microfilariae in its blood. If that mosquito bites another cat or dog, it transmits the larvae to that animal. The larvae mature into adult worms in the heart and lungs of the host animal.
About Heartworms. Heartworms are transmitted to dogs through mosquito bites. If a dog has heartworms, he is not contagious to other people and pets. Because of the warm climate, dogs in Texas must be on a monthly heartworm preventative.If a dog isnât on a preventative, after being bitten by an infected mosquito, the worms will grow around the heart until they eventually kill the dog.f a dog has heartworms, he is not contagious to other people and pets. Because of the warm climate, dogs in Texas must be on a monthly heartworm preventative. If a dog isnât on a preventative, after being bitten by an infected mosquito, the worms will grow around the heart until they eventually kill the dog.