Which of the following events occurs at the start of diastole?

Correct Answer: B

Rationale: At the start of diastole, the ventricles relax and begin to fill with blood from the atria. As this relaxation phase begins, the pulmonic valve opens to allow blood to flow from the right ventricle to the pulmonary artery and then to the lungs for oxygenation. This marks the beginning of diastole, the period of the cardiac cycle when the heart is filling with blood. The closure of the tricuspid valve, closure of the aortic valve, and production of the first heart sound (S1) occur during systole, the phase of the cardiac cycle when the heart is contracting to pump blood out to the body.

Correct Answer: D

Rationale: Tendons are the correct answer as they are an extra-articular structure. Tendons are fibrous connective tissue that attach muscles to bones, providing stability and transmitting forces during movements. In the context of the scenario provided, the player's knee injury involved structures within the joint such as the synovium (A), joint capsule (B), and juxta-articular bone (C), but the tendons (D) are located outside of the joint itself.

Correct Answer: A

Rationale: The symptom described - sharp, aching chest pain that increases with breathing - is typically associated with musculoskeletal issues. The pain worsening with breathing suggests a connection to the movements of the chest wall, which could involve the muscles, bones, or joints in that area. Conditions such as costochondritis (inflammation of the cartilage that connects a rib to the breastbone) or muscle strains in the chest wall are common causes of chest pain that worsens with breathing. This localization to the musculoskeletal system is based on the characteristics of the pain and how it is affected by breathing, helping to narrow down the differential diagnosis.

Correct Answer: A

Rationale: A tender, painful swelling of the scrotum is a common symptom of acute epididymitis, which is the inflammation of the epididymis. The epididymis is a tube located at the back of the testicle that stores and transports sperm. In acute epididymitis, the swelling is usually accompanied by pain, tenderness, redness, and warmth in the affected area. Other symptoms may include fever, chills, and discharge from the penis. Prompt medical evaluation and treatment are necessary to prevent complications such as abscess formation or chronic epididymitis. Strangulated inguinal hernia and torsion of the spermatic cord may present with severe pain and swelling in the scrotum, but they have distinct mechanisms and require different management approaches.

Correct Answer: B

Rationale: While it is important to ask about recent sexual activity and whether it included sexual intercourse, using the term "intimate physical contact" is not specific enough. This question could potentially lead to misinterpretation or confusion regarding what types of activities are being referred to. It is more appropriate to directly ask about sexual intercourse when obtaining a sexual history. The other options are all appropriate questions to elicit information about the patient's sexual history.

Correct Answer: B

Rationale: Orthopnea is a symptom characterized by difficulty breathing while lying flat that improves when sitting or standing upright. This symptom is specifically related to cardiovascular conditions, such as heart failure, in which fluid accumulates in the lungs when lying down. Considering the patient's complaint of breathlessness with activity and the need to assess for cardiovascular issues, asking about orthopnea would be most appropriate to gain insights into potential heart-related causes of the symptoms. Abdominal pain (A), hematochezia (C), and tenesmus (D) are not typically associated with cardiovascular conditions and are less relevant to the patient's presentation.

Correct Answer: B

Rationale: In an elderly woman with a history of coronary bypass surgery presenting with severe, diffuse abdominal pain that is not worsened by abdominal palpation, neuropathy should be suspected. Neuropathy refers to nerve damage, which can result in abnormal sensations of pain, often described as burning, shooting, or stabbing. Abdominal neuropathy can be caused by various conditions such as diabetes, alcohol abuse, vitamin deficiencies, or certain medications. The absence of worsening pain upon palpation makes organic abdominal pathology less likely, suggesting a neuropathic etiology. In this case, further evaluation and testing for neuropathy would be warranted.

Correct Answer: B

Rationale: Urge incontinence, also known as overactive bladder, is characterized by a sudden and strong urge to urinate which is difficult to control. In this case, Mrs. LaFarge is unable to get to the bathroom quickly enough when she senses the need to urinate, which indicates a lack of control over the urge to urinate. This is typically caused by involuntary contractions of the bladder muscle. Stress incontinence, on the other hand, is leakage of urine during activities that increase intra-abdominal pressure, such as coughing or exercising. Overflow incontinence is characterized by urinary retention and constant dribbling of urine due to the bladder being unable to empty properly. Functional incontinence occurs when a person has normal bladder control but is unable to reach the bathroom in time due to physical or cognitive impairments. Since Mrs. LaFarge is experiencing a sudden and strong urge to urinate that she cannot

Correct Answer: B

Rationale: At the start of diastole, the ventricles relax and begin to fill with blood from the atria. As this relaxation phase begins, the pulmonic valve opens to allow blood to flow from the right ventricle to the pulmonary artery and then to the lungs for oxygenation. This marks the beginning of diastole, the period of the cardiac cycle when the heart is filling with blood. The closure of the tricuspid valve, closure of the aortic valve, and production of the first heart sound (S1) occur during systole, the phase of the cardiac cycle when the heart is contracting to pump blood out to the body.