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..
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 minute â¦ s. For a medium beef  roast, cook for 45 minutes or for well done meat, cook for an hour.he inside temperature should be 140 degrees for rare, 160 degrees for medium, and 170 degrees for well-done. Use meat theomometer for this. +++Use a meat thermometer that you leave in the roast the entire time it cooks...it should reach the middle..and not hit a bone. Cook 22 minutes per lb. at 300 degrees.