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.
This is just convenient for those types of producers. If you are able to leave the pup with the mother until he/she is at least 10 - 11 weeks old, that would be best. The time from about 6 weeks until 10 weeks is when the puppy learns from its mother and litter mates how to act properly, doggy manners.eport Abuse. 8 weeks is usually when puppies can leave their mom; however, puppies of smaller breeds (Cavaliers, Chihuahuas, Yorkies, etc.) are better off staying longer. One of the biggest reasons that it's best for puppies to stay with the litter for longer is for socialization.