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..
Place your meatloaf in the roasting pan and shape into a loaf. Bake at 350 degrees for 1 hour to 1 1/2 hours. Cooking the meatloaf this way ensures that all of the heat from the oven can get to all sides of the meatloaf and not just the top like in a loaf pan.eport Abuse. For a 2 pound meatloaf....I'd set the oven to 350 degrees and place the meatloaf on a heavy baking pan. (like the bottom of the broiler pan). It's heavy so it browns well. Spray or rub with olive oil..and place the meatloaf there sprinkle with flour all over and pat it on.