Circulation. Arthropods have an open circulatory system. A well-developed heart pumps blood through arteries that branch and enter the tissues. Blood leaves the blood vessels and moves through sinuses, or cavities.The blood then collects in a large sinus surronding the heart, then it re-enters the heart and is pumped throughout the body.irculation. Arthropods have an open circulatory system. A well-developed heart pumps blood through arteries that branch and enter the tissues. Blood leaves the blood vessels and moves through sinuses, or cavities.
Here is a recipe I like to make.. Meatloaf Supreme 1 envelope dry onion soup mix 2 lbs ground beef 2 eggs 1/4 cup water 2/3 cup ketchup 3/4 cup dry bread crumbs Preheat oven to 350 F. In a large bowl, combine all ingredients, mix well. In a large shallow baking dish, shape into a loaf. Bake 1 hour..ere is a recipe I like to make.. Meatloaf Supreme 1 envelope dry onion soup mix 2 lbs ground beef 2 eggs 1/4 cup water 2/3 cup ketchup 3/4 cup dry bread crumbs Preheat oven to 350 F. In a large bowl, combine all ingredients, mix well. In a large shallow baking dish, shape into a loaf. Bake 1 hour..
Making the world better, one answer at a time. How long you would cook a 2.2 pound beef roast depends upon how you like it cooked. For a rare beef roast, cook at 200 degrees Celsius/390 degrees Fahrenheit for 30 minutes.For a medium beef roast, cook for 45 minutes or for well done meat, cook for an hour.uice makes excellent gravy Good luck!   If it's frozen then 15 minutes per pound. However, in this case it may take 1/2 hour to 45 minutes. Put oven up to 400 for 15 minutes to sear roast, then turn down to 350. If in doubt use a knife and put a small cut in the thickest part of the roast.