Sophia Biology Milestone 2

You passed this Milestone 15 questions were answered correctly. 1 UNIT 2 — MILESTONE 2 Which of the following activities uses white skeletal muscles? Snapping your fingers Swimming Walking Running a marathon CONCEPT Types of Skeletal Muscle and Muscle Contraction Overview 2 Which information about muscle cramps is true? They are caused by a deficiency of calcium in the body. They are voluntary contractions of muscles that release immediately. 1/7 They are caused by a deficiency of potassium in the body. They are involuntary contractions of muscles that do not release immediately. They are caused by a deficiency of calcium in the body. They are involuntary contractions of muscles that do not release immediately. They are caused by a deficiency of potassium in the body. They are voluntary contractions of muscles that release immediately. CONCEPT Muscle System Disorders 3 Which of the following is found on the outside of skeletal muscles? Myofibrils Sheath Bundles Sarcomere CONCEPT Skeletal Muscles 4 Which of the following is required for muscle contraction? Sodium Zinc Magnesium 2/7 Calcium CONCEPT Nervous System and Contractions 5 Which of the following statements is true? A tendon connects two muscles. A tendon connects two bones. A tendon connects a muscle to the bone. A ligament connects a muscle to the bone. CONCEPT Joints 6 Select the true statement about anabolic steroids. They are a protein naturally found in muscles that binds to oxygen from the blood, which working muscles need in order to function. They are a synthetic substance manufactured to mimic human growth hormones that athletes sometimes use to promote bone growth. They are a synthetic substance manufactured to mimic testosterone that athletes sometimes use to build muscles. They are a substance that occurs naturally in muscle tissue and are sometimes consumed as a supplement by weight trainers. 3/7 CONCEPT Muscle Building and Steroids 7 Which of the following conditions involves painful friction between two bones? Osteoporosis Carpal tunnel Osteoarthritis Dislocation CONCEPT Skeletal Health and Disorders 8 Which of the following involves ligaments being stretched too far or torn? Complete fractures Compound fractures Sprains and strains Simple fractures CONCEPT Skeletal Health and Disorders 9 Some muscle groups work ________, meaning one muscle in the group opposes the action of the other. 4/7 antagonistically anaerobically aerobically synergistically CONCEPT Types of Skeletal Muscle and Muscle Contraction Overview 10 What does red bone marrow do? It converts itself to yellow marrow when necessary. It produces red blood cells only. It produces white blood cells only. It produces red and white blood cells. CONCEPT Bone Structure and Growth 11 A rise in __________ released from the sarcoplasmic reticulum allows actin to bind to myosin and cause a contraction, which requires __________ energy. calcium; ATP oxygen; kinetic 5/7 calcium; kinetic oxygen; ATP CONCEPT Muscle Contractions: Micro Level 12 Which type of muscle makes up blood vessels? Skeletal Smooth Cardiac None--blood vessels are not muscles CONCEPT Muscular System 13 Which exercise will help build larger and stronger muscles? Yoga Biking Weightlifting Swimming 6/7 CONCEPT Muscle Building and Steroids 14 Why do bones undergo remodeling? To change shape in response to environmental factors To redistribute calcium from stronger bones to weaker bones To correct calcium levels in the bloodstream To constantly replace dying bone cells CONCEPT Homeostasis and Bone Remodeling 15 Which of the following statements is true? The pectoral girdle contains the legs and feet. The pelvic girdle contains the hips and lower spine. The pelvic girdle contains the shoulders, arms and hands. The pectoral girdle contains the shoulders, arms and hands. 7/7