Sophia Human Biology Milestone 2

Which of the following involves ligaments being stretched too far or torn? ● Simple fractures ● Complete fractures ● Compound fractures ● Sprains and strains CONCEPT Skeletal Health and Disorders 2 Which of the following represents an involuntary muscle contraction? ● Jude turns the page of a book he's reading. ● Michael swats a fly away from his food. ● Roxanne goes for a walk to stimulate her muscles the day after finishing a marathon. ● Maureen's pupils narrow in response to bright light. CONCEPT Muscular System 3 Which of the following statements is true? ● The pectoral girdle contains the shoulders, arms and hands. ● 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. CONCEPT Skeleton 4 Which of these accurately describes the change in the muscle cells of a person running a marathon? ● Decrease in the number of mitochondria ● Decrease in myoglobin ● Increase in myoglobin ● Increase in the number of skeletal muscles CONCEPT Muscle Building and Steroids 5 Which of the following is released by the brain when there is too little calcium in the blood? ● Parathyroid hormone (PTH) ● Calcitonin ● Osteoblasts ● Osteoclasts CONCEPT Homeostasis and Bone Remodeling 6 What does red bone marrow do? ● It produces red blood cells only. ● It produces white blood cells only. ● It converts itself to yellow marrow when necessary. ● It produces red and white blood cells.