NHA CCMA Clinical Medical Assistant - Set 2 - Part 3

Correct Answer: Appendix

Acute appendicitis classically begins as periumbilical pain that migrates to the right lower quadrant near McBurney point. Fever and leukocytosis support the diagnosis, and surgical removal is the standard treatment in most cases. Option a is incorrect because Gallbladder inflammation causes right upper quadrant pain that may radiate to the right shoulder, especially after fatty meals, so it does not produce the right lower quadrant migration pattern described in this scenario. Option b is incorrect because Stomach inflammation or ulcer disease typically causes epigastric pain related to meals, so it does not produce the migrating periumbilical to right lower quadrant pain pattern described in this surgical question scenario. Option c is incorrect because Pancreatitis typically causes severe epigastric pain radiating to the back and is associated with elevated lipase, so it does not produce the right lower quadrant migration pattern described in this case.

Correct Answer: Parkinson disease

Parkinson disease produces tremor, rigidity, akinesia or bradykinesia, and postural instability, summarized by TRAP. Loss of dopaminergic neurons in the substantia nigra underlies the slow movements, stiffness, and characteristic resting tremor of the disorder. Option b is incorrect because Multiple sclerosis produces relapsing and remitting demyelinating lesions with optic neuritis and varied weakness rather than the resting tremor, rigidity, and bradykinesia tetrad described in this neurology clinic scenario presented. Option c is incorrect because Alzheimer disease produces progressive memory loss and cognitive decline with insidious onset rather than the resting tremor, rigidity, and bradykinesia tetrad described in this neurology question about the substantia nigra disorder. Option d is incorrect because Guillain-Barre syndrome produces ascending symmetric flaccid weakness after a respiratory or gut infection rather than the resting tremor, rigidity, and bradykinesia tetrad descri

Correct Answer: Mononucleosis

Mononucleosis is caused by Epstein-Barr virus and produces sore throat, prolonged fatigue, fever, and lymphadenopathy. It commonly affects adolescents and young adults, often spreading through saliva exposure during the highly contagious period. Option a is incorrect because Influenza is caused by influenza virus and presents as sudden fever, cough, body aches, and fatigue lasting days to a week, so it does not match the prolonged Epstein-Barr pattern described in this case. Option b is incorrect because Strep throat is caused by group A streptococcus and produces sore throat with exudate but typically resolves quickly with antibiotics, so it does not match the prolonged Epstein-Barr lymphadenopathy presentation described in this case. Option d is incorrect because Tuberculosis is caused by Mycobacterium tuberculosis and produces chronic cough, night sweats, weight loss, and hemoptysis, so it does not match the Epstein-Barr fatigue and lymphadenopathy presentation described in this cas

Correct Answer: Incision

An incision is a clean wound with smooth straight edges, typically from a sharp instrument such as a knife or surgical blade. Edges align well, supporting closure with sutures, staples, or skin adhesive when appropriate. Option a is incorrect because Avulsion describes tissue forcibly torn away from its underlying attachments, so it does not match the smooth straight edges of a knife cut described in this wound classification question scenario presented. Option b is incorrect because Abrasion describes a superficial scrape involving the epidermis, often from friction with a rough surface, so it does not match the deeper clean straight cut from a sharp blade described. Option c is incorrect because Contusion describes a closed bruise injury with intact skin and underlying tissue bleeding, so it does not match the open clean straight cut from a sharp blade described in this wound documentation question.

Correct Answer: Magnetic resonance imaging

Magnetic resonance imaging uses strong magnets and radiofrequency pulses rather than ionizing radiation, producing detailed soft tissue images. It is preferred for evaluating the brain, spinal cord, joints, and other tissues with subtle contrast differences. Option a is incorrect because Computed tomography uses ionizing radiation and combines many X-ray slices to create cross-sectional images, so it does not match the description of a magnet-based study with no ionizing radiation. Option b is incorrect because X-ray radiography uses ionizing radiation to produce projection images of bones and dense structures, so it does not match the magnet-based detailed soft tissue brain and spinal cord study described. Option d is incorrect because Mammography uses low-dose X-ray imaging specifically for breast tissue screening and diagnosis, so it does not match the magnet-based brain and spinal cord study described in this imaging selection question.

Correct Answer: Incidence

Incidence describes the number of new cases of a disease during a defined period in a population. It contrasts with prevalence, which counts all existing cases at one point in time across the population. Option a is incorrect because Prevalence counts all existing cases of a disease at a single point in time, so it does not describe the new cases occurring during a defined time period in the community as described. Option b is incorrect because Endemic level describes the baseline ongoing presence of a disease in a population, so it does not describe the new cases reported during a defined time period in the local community in this scenario. Option c is incorrect because Mortality rate describes the death rate from a disease in a population, so it does not describe the count of new cases reported during a defined period in the community here.

Correct Answer: Family history

Family history is a non-modifiable risk factor reflecting inherited genetic predisposition. Lifestyle changes cannot alter genetic background, although they can reduce overall risk. Smoking, diet, and exercise are modifiable and central to prevention. Option a is incorrect because Smoking habit can be changed through cessation efforts, counseling, nicotine replacement, and prescription medications, so it is a classic modifiable behavioral risk factor rather than a fixed non-modifiable family history characteristic. Option b is incorrect because Daily diet can be changed by adjusting food choices, portion sizes, and nutrient quality with professional support, so it is a modifiable lifestyle factor rather than a fixed non-modifiable inherited characteristic. Option d is incorrect because Exercise level can be changed through structured activity programs, gradual conditioning, and behavioral coaching, so it is a modifiable lifestyle factor rather than a fixed non-modifiable inherited fami

Correct Answer: Spanish flu pandemic

The 1918 influenza pandemic, often called the Spanish flu, spread globally and killed an estimated fifty million people. World War One conditions and limited medical infrastructure contributed to the severity of the global outbreak. Option b is incorrect because Black Death plague occurred in the mid fourteenth century from bubonic plague carried by fleas on rats, so it does not match the early twentieth century influenza pandemic described in this historical review question. Option c is incorrect because Smallpox in the Americas began with European contact in the late fifteenth century and persisted for centuries, so it does not match the early twentieth century influenza pandemic described in this historical review question. Option d is incorrect because Ebola West Africa occurred in 2014 through 2016 as a regional outbreak with about eleven thousand deaths, so it does not match the early twentieth century influenza pandemic described in this question.

Correct Answer: Quarantine

Quarantine separates people who have been exposed to a contagious disease but are not yet symptomatic, while isolation separates people already known to be sick. Both strategies limit further spread during outbreaks and pandemics. Option a is incorrect because Isolation separates people already known to be sick from others to prevent further transmission, so it does not describe the separation of exposed but well individuals during an outbreak as described. Option b is incorrect because Mitigation describes broad public health strategies such as social distancing, masking, and closures during an outbreak, so it does not specifically describe separating exposed but well individuals from the population. Option c is incorrect because Surveillance describes ongoing monitoring of disease patterns through wastewater, lab reporting, and syndromic data collection, so it does not describe separating exposed but well individuals during an outbreak response.

Correct Answer: Negative feedback loop

Negative feedback dominates physiological homeostasis. When a variable strays from its set point, sensors signal effectors to reverse the change. Examples include insulin reducing high blood glucose and baroreceptors adjusting heart rate effectively. Option a is incorrect because Positive feedback amplifies a stimulus rather than reversing it, used in oxytocin release during labor and the clotting cascade, so it is not the dominant homeostasis mechanism for stable temperature, glucose, and pressure. Option c is incorrect because Open loop response systems do not adjust based on output feedback and therefore cannot maintain a precise set point, so they are not the dominant homeostatic mechanism in temperature, glucose, and pressure control. Option d is incorrect because Random fluctuation is not a regulated control mechanism in physiology, since the body actively maintains variables through coordinated sensor and effector pathways rather than allowing random unregulated changes around t