Sophia Human Biology Milestones 2 Question/Answers Complete Grade A

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Sophia Human Biology Milestones 2 Sophia Human Biology Milestone 2 1 Which of the following statements is true of the effects of aerobic exercise on the muscle? Aerobic exercise leads to stro... nger muscles that sustain activity for short periods of time. Aerobic exercise significantly increases myofibrils within the muscles. Aerobic exercise leads to significantly larger muscles. Aerobic exercise increases mitochondria within cells, making muscles able to sustain activity for longer periods of time. CONCEPT Muscle Building and Steroids 2 Which of the following statements is true? Yellow bone marrow can convert to red bone marrow. Yellow bone marrow is only found in children. Yellow bone marrow stores proteins. Yellow bone marrow produces red and white blood cells. CONCEPT Bone Structure and Growth 3 Which of the following statements is true? A ligament connects a muscle to the bone. A tendon connects two bones. A tendon connects a muscle to the bone. A tendon connects two muscles. CONCEPT Joints 4 __________ acts on groups of paired muscles. When one muscle contracts, the opposite muscle cannot contract because no stimulus is sent. Reciprocal innervation Synergistic contraction Sliding-filament mechanism Antagonistic contraction CONCEPT Types of Skeletal Muscle and Muscle Contraction Overview 5 Which of the following statements is true? The pelvic girdle contains the shoulders, arms and hands. The pelvic girdle contains the hips and lower spine. The pectoral girdle contains the shoulders, arms and hands. The pectoral girdle contains the legs and feet. CONCEPT Skeleton 6 A rise in __________ released from the sarcoplasmic reticulum allows actin to bind to myosin and cause a contraction, which requires __________ energy. oxygen; ATP oxygen; kinetic calcium; ATP calcium; kinetic CONCEPT Muscle Contractions: Micro Level 7 When a skeletal muscle contracts, what term is used for the end of the muscle that is attached to a moveable bone? Tendon Insertion Extensor Origin CONCEPT Skeletal Muscles 8 A gymnast couldn't bend his knees after an accident. His doctors told him that the reason behind this is a tear in the knee muscle. Which of these muscle system disorders best represents the condition of the gymnast's knees? Tetanus Atrophy Muscular dystrophy Muscle strain CONCEPT Muscle System Disorders 9 What helps an information signal to cross a synapse and enter the muscular system? Neurotransmitter Sodium Nerve impulse Calcium CONCEPT Nervous System and Contractions 10 Which of the following injuries involves a bone that has broken into two pieces? Compound fracture Common fracture Complete fracture Simple fracture CONCEPT Skeletal Health and Disorders 11 Which of the following does the muscular system do? Remove waste from the bloodstream Give the body its shape and structure Protect the body from outside factors Help blood move through the body CONCEPT Muscular System 12 Which of the following statements is true? Osteoblasts break down bone tissue to release calcium into the bloodstream. Osteoblasts build new bone tissue and release calcium into the bloodstream as a byproduct. Osteoclasts build new bone tissue when there is too much calcium in the bloodstream. Osteoclasts break down bone tissue to release calcium into the bloodstream. CONCEPT Homeostasis and Bone Remodeling 13 Which of the following is a condition characterized by the wearing away of cartilage between joints? Inflammation Carpal tunnel syndrome Osteoarthritis Osteoporosis CONCEPT Skeletal Health and Disorders 14 Which of the following best characterizes white skeletal muscles? They contain large amounts of myoglobin. Most muscles in your body are white skeletal muscles. They require more energy and thus contain more mitochondria than red skeletal muscles. They fatigue more quickly than red skeletal muscles. CONCEPT Types of Skeletal Muscle and Muscle Contraction Overview 15 Jaundice, which is among the many negative side effects of anabolic steroid use, indicates damage to which part of the body? Bone marrow Kidneys Liver Pancreas CONCEPT [Show More]

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