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..
Report Abuse. I usually cook a 1 lb meatloaf for an hour on 350. Pour the tomato sauce/ketchup topping on and bake for 10 more minutes, and the let sit to cool. Either will work, when I didn't have a loaf pan, I would use a 9x13 pan line in foil and shape into loaf form.eport Abuse. I usually cook a 1 lb meatloaf for an hour on 350. Pour the tomato sauce/ketchup topping on and bake for 10 more minutes, and the let sit to cool. Either will work, when I didn't have a loaf pan, I would use a 9x13 pan line in foil and shape into loaf form.