1. What are the three types of muscle tissue that make up the muscular system and where can you find each type of muscle in the human body? A. B. C. 2. What connective tissue attaches skeletal muscles to bones? 3. What action allows muscle fibers to generate (give rise to or produce) force and motion? 4. Most skeletal muscles work in pairs to create movement. What specific muscle actions are needed to pick up a book? What specific muscle actions are necessary to put down the book? 5. What percentage of the body’s weight is due to skeletal muscles? 6. Which of the two types of skeletal muscle fibers is responsible for giving a sprinter a burst of energy at the start of the 100-meter dash? Which one will help the marathon runner finish the race? 7. Which muscle tissue types are controlled by the autonomous (working without our conscious control--we don’t have to tell them to work; the brain automatically takes control) nervous system? 8. How much of the body’s internal temperature is produced by contracting muscles? Site #2 Muscle Basics 9. How many skeletal muscles does the human body contain? 10. Explain the process by which muscle cells contract. Be sure to include the myofilaments that contain the proteins actin and myosin. 11. Explain how to strengthen your skeletal muscles over time. Be sure to include the processes involved in breaking down and building up your muscles. 12. Why do you need a good supply of protein in your diet to maintain or build muscle strength over time?

Blood cells bring oxygen to cells and take carbon dioxide away. true or false

The primary function of the respiratory system is to supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body. the respiratory system does this through breathing. when we breathe, we inhale oxygen and exhale carbon dioxide. this exchange of gases is the respiratory system's means of getting oxygen to the blood.respiration is achieved through the mouth, nose, trachea, lungs, and diaphragm. oxygen enters the respiratory system through the mouth and the nose. the oxygen then passes through the larynx (where speech sounds are produced) and the trachea which is a tube that enters the chest cavity. in the chest cavity, the trachea splits into two smaller tubes called the bronchi. each bronchus then divides again forming the bronchial tubes. the bronchial tubes lead directly into the lungs where they divide into many smaller tubes which connect to tiny sacs called alveoli. the average adult's lungs contain about 600 million of these spongy, air-filled sacs that are surrounded by capillaries. the inhaled oxygen passes into the alveoli and then diffuses through the capillaries into the arterial blood. meanwhile, the waste-rich blood from the veins releases its carbon dioxide into the alveoli. the carbon dioxide follows the same path out of the lungs when you exhale.the diaphragm's job is to pump the carbon dioxide out of the lungs and pull the oxygen into the lungs. the diaphragm is a sheet of muscles that lies across the bottom of the chest cavity. as the diaphragm contracts and relaxes, breathing takes place. when the diaphragm contracts, oxygen is pulled into the lungs. when the diaphragm relaxes, carbon dioxide is pumped out of the lungs. write one paragraph (at least 6 sentences) describing the path of oxygen through the respiratory system. also include why this "order of operations" is the way it is!

What is the longest you should ice the injured area at one time? a. 10-20 minutes b. 30-60 minutes c. 1-2 hours d. as long as you want