The Bible instructs us not to consume blood because it is the life of the animal we are about to consume. Does a fetus not have blood going through it? ...Also, look at a pictures of people at different decades in life- their childhood, their teens', their 20's, 30's, 40's all the way up to the oldest decade of a person's life, lets say 120years old. They all lokk different, don't they? The smooth skin of youth turns into acne on a larger stronger body and weight becomes better distributed through time then the hairline recedes, the butt sags, wrinkles appear, perhaps a slouch develops, musculature wanes so on and so forth. A fetus is just in a different stage of physical development, that's all. We know it will become a human being.