Why is it necessary to make a pressure bandage for a bleeding injury? a. to cover the wound so it does not get contaminated. b. to create a barrier so the blood does not infect the rescuer. c. to stop the bleeding by applying continuous pressure. d. to cover up the would so the victim cannot look at it and go into shock.

It is to help stop the bleeding by applying continuous pressure. And  it also makes the wound feel better and it makes one feel more protected

You add a pressure bandage to stop bleeding. When you bleed, your brain sends serotonin and a group of histamines that make the blood vessels and capillaries swell to close off blood flow so that the breach in the vessel can properly clot. Adding pressure will increase the swelling of the vessels so that the clot can form easier.

Muscles in the body us with a lot of things for example, if i wanted to lift a heavy box and had no muscle i would just collapse where i was because of the fact muscles hold us together. overall they are 650 muscle in the human body, all of them have different purposes and ways to keep us together. there are three types of muscle in the body skeletal, smooth, and cardiac muscle. skeletal muscle are attached to the bone and with movement. smooth muscle, this is found in the wall of our organs, such as our stomach, this muscle with movement   as well, without this muscle, we would only be allowed to eat small amounts. the cardiac muscle is the heart muscle and probably the most important one. these are only found in the walls of the heart and the heart pump blood to the other parts of your body. we have two different types of muscle fibers, slow twitch and fast twitch. slow twitch muscles enable long-endurance feats such as distance running. fast twitch fatigue faster but are used in powerful bursts of movements like sprinting. there are three different types of muscle contractions concentric, eccentric, isometric. concentric contraction causes muscles to shorten, thereby generating force.   eccentric contractions cause muscles to elongate in response to a greater opposing force. isometric contractions generate force without changing the length of the muscle.: //athleticquickness.com/muscle-contraction-types-part-1/