What would happen to the pH of a strong acid if you added a weak base to it? What would happen to the pH of weak acid if you added a strong base to it? What would happen to the pH of a strong acid if you added strong base?  

The formation of bubbles when HCl is added to a magnesium ribbon is a type of chemical change. 

A 35-year-old businessman complains of tingling and numbness in his fingers of both hands, mostly in the ring and small fingers, made worse with overhead activity. Neurologic exam and electromyography-nerve conduction study is normal. His cervical spine x-ray reveals cervical ribs arising from the seventh cervical vertebra (see image).   Which of the following conditions is the most likely diagnosis for this patient?

You are evaluating a patient with a knee effusion and subsequent synovial fluid analysis reveals the following findings: Fluid is pinkish-red and cloudy with WBC 2,800 (30% PMNs) and glucose level 18 mg/dL. Which of the following conditions would be a possible underlying cause of these synovial fluid results?

Which of the following types of shoulder dislocation and associated mechanism of injury is the most common?

A 16-year-old female presents to the Emergency Department after injuring her knee in a soccer match earlier today. The injury occurred while suddenly decelerating and cutting to run in another direction. She heard a pop in the knee and complains the knee now gives out with any twisting motion. Which of the following tests is the most useful in eliciting the most likely diagnosis?

An 8-year-old afebrile male patient is referred to the Orthopedic clinic because he has significant right hip and knee pain. The patient is noted to walk with a limp as he enters the office, and the patient’s mother denies any history of trauma. On physical examination, you note atrophy of the right quadriceps muscles and decreased range of motion (ROM) of the right hip, particularly with internal rotation and abduction. Leg length inequality is also observed on the right compared with the left. Frog-leg radiographs of the right hip reveal cessation of growth at the capital femoral epiphysis and a smaller femoral head epiphysis with widening of the articular space on the right side. White blood cell counts, C-reactive protein, and erythrocyte sedimentation rates are all normal. Which of the following conditions is the most likely diagnosis?

A 32-year-old right hand dominant female presents to your clinic with a 3-month complaint of right-hand pain and paresthesia of the thumb, index, and middle fingers. She works in a retail sales office where she spends much of the day on the computer keyboard typing. The presence of which of the following findings on physical examination would suggest that the underlying condition was more advanced?

A 40-year-old female presents with a history of chronic musculoskeletal pain and chronic fatigue unrelieved by rest. Palpation produces pain in 11 of the 18 paired tender points. Which of the following correctly identifies the pathophysiology of her suspected diagnosis?

Which of the following statements best describes the final stage of fracture healing?