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.
How Long Yorkies are Pregnant. Canines in general are pregnant for an average of 63 days. However, as few as 58 days and as long as 68 days of pregnancy is considered normal for a toy breed dog. If a Yorkie has not delivered by day 67, it will be time to call the veterinarian. Hannah,4 yrs. old, Day 50 into her pregnancy and doing great!