GROSS ANATOMY

Detailed explanation-1: -The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide. These roadways travel in one direction only, to keep things going where they should.

Detailed explanation-2: -Final answer: ‘Valves ensure that the blood does not flow backwards’ is the correct statement about the human circulatory system.

Detailed explanation-3: -The excretory system is in charge of removing all metabolic wastes from the body. The human excretory system consists of organs that aid in the elimination of nitrogenous wastes from the body. A pair of kidneys, a pair of ureters, a bladder of urine, and the urethra are organs of the human excretory system.

Detailed explanation-4: -The circulatory system is like a highway system, moving materials around the body. The circulatory system is like a factory, making materials needed by the body. The circulatory system is like a garbage truck, removing waste from the body.