The medulla oblongata is part of the nervous system in the lower  half of the brainstem in which connects the brain and spinal cord.  It is subconscious and it controls the â¦ involuntary action such as  breathing, blood pressure and even heartbeat. Answered.he lower portion of the brainstem (brainstem includes the middle brain, pons, and medulla oblongata), which controls visceral functions of the body, such as heart rate, breathing/respiration, and blood pressure.
Once the breeding is done, there s nothing to do but wait. Pregnancy lasts 61-64 days; puppies can be detected by x-ray or ultrasound about halfway through. There are some telltale signs increased appetite, weight gain, nipple enlargement but they could apply to a false pregnancy as well as the real thing.
A reputable breeder will keep pups until 10-12 weeks, or sometimes longer. Toy & small breed dogs should be no younger than 12 weeks. During this time period, puppies are still learning from their mother and each other about social interacitons, pack behavior, bite inhibition, etc.. reputable breeder will keep pups until 10-12 weeks, or sometimes longer. Toy & small breed dogs should be no younger than 12 weeks. During this time period, puppies are still learning from their mother and each other about social interacitons, pack behavior, bite inhibition, etc..