Question: Q: What normal bodily occurrence can cause skeletal muscles to involuntarily contract? Read this paragraph and choose the correct option from the provided answers: Skeletal muscle is made up of voluntary muscles, usually attached to the skeleton. Skeletal muscles move the body. They can also contract involuntarily by reflexes. For example, you can choose to move your arm, but your arm would move automatically if you were to burn your finger on a stove top. This voluntary contraction begins with a thought process. A signal from your brain tells your muscles to contract or relax. Quickly contract and relax the muscles in your fingers a few times. Think about how quickly these signals must travel throughout your body to make this happen. Choices: - thinking - movement - respiration - reflexes A:
Answer: reflexes

Question: Q: What are the three major types of blood vessels? Read this paragraph and choose the correct option from the provided answers: Blood vessels form a network throughout the body to transport blood to all the body cells. There are three major types of blood vessels: arteries, veins, and capillaries. All three are shown in Figure below and described below. Choices: - arteries , pups , capillaries - arteries, capilaries, tubes - sculptures , veins , capillaries - arteries, veins, capillaries A:
Answer: arteries, veins, capillaries

Question: Q: What type of pressure is the pressure exerted by gas particles in earth's atmosphere as those particles collide with objects? Read this paragraph and choose the correct option from the provided answers: Atmospheric pressure is the pressure exerted by gas particles in Earth's atmosphere as those particles collide with objects. A barometer is an instrument used to measure atmospheric pressure. A traditional mercury barometer consists of an evacuated tube immersed in a container of mercury. Air molecules push down on the surface of the mercury. Because the inside of the tube is a vacuum, the mercury rises inside the tube. The height to which the mercury rises is dependent on the external air pressure. Choices: - vertical pressure - adjacent pressure - adjacent pressure - atmospheric pressure A:
Answer:
atmospheric pressure