ethmoidal foramina, foraÂ´mina ethmoidaÂ´lia small openings in the ethmoid bone at the junction of the medial wall with the roof of the orbit, the anterior transmitting the nasal branch of the ophthalmic nerve and the anterior ethmoid vessels, the posterior transmitting the posterior ethmoid vessels.oramen rotunÂ´dum a round opening in the great wing of the sphenoid for the maxillary branch of the trigeminal nerve. sacral foramina, anterior eight passages (four on each side) on the pelvic surface of the sacrum for the anterior branches of the sacral nerves.
Something to remember about puppies is that they need sleep - lots of it, just like babies. Your puppy will need about 18-19 hours sleep in every 24. So only expect 4 to 5 hours of being awake and only about an hour at a time. If they're kept awake and playing, you could both be heading for a stressful time.
By 16 weeks, most puppies should begin sleeping through the night, though there may still be occasional nights your puppy needs to get up and go outside. On average, you can expect your puppy to sleep six to 10 hours at night. Puppies spend 16 to 20 hours sleeping every day depending upon their age. This means that, in addition to her 6 to 10 hours of nightly sleep, you can expect your puppy to spend as much time during the day asleep as she spends awake. Most puppies take a nap every hour or so.