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.
You can start weaning the pups with watered down puppy food (gruel) as early as 3-3 1/2 weeks. This can take a couple weeks then start slowly adding less water to make it more firm. They should be able to start with small kibble by 5-6 weeks old. Make sure its a high quality puppy food.-8 weeks old-be sure to add a small amount of water to soften the food until you puppy gets use to eating hard food.   below is from: www.dogbreedinfo.com/feeding   Fee â¦ d your puppy 3-4 times a day. Puppies have different nutritional needs than adult dogs.