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.
While they may grow up and begin to look less like a typical puppy, puppies continue to need extra nutritional support for quite a lot longer than you may think. Puppies mature into adults at a different time, which means that a large dog breed will mature into an adult at about 15 months, while smaller breeds will be puppies for only 9 months. So, youâll need to feed a larger dog breed specially formulated puppy food for much longer than you would a smaller dog breed.