Which occurs when reflexes are hyperactive when the foot is abruptly dorsiflexed?

Rigidity.

Flaccidity.

Ataxia.

Clonus.

Answer and Explanation

The Correct Answer is D

Choice A rationale

Rigidity is characterized by a continuous resistance to passive movement in any direction and does not specifically occur during abrupt dorsiflexion of the foot.

Choice B rationale

Flaccidity refers to decreased muscle tone or limpness, which is the opposite of hyperactivity or spasticity, and would not be observed with abrupt dorsiflexion.

Choice C rationale

Ataxia involves uncoordinated or erratic movements and is related to cerebellar dysfunction. This is not specifically triggered by abrupt dorsiflexion of the foot.

Choice D rationale

Clonus is the correct term for rhythmic, involuntary contractions of a muscle that occur when it is suddenly stretched, such as with abrupt dorsiflexion of the foot. It is a sign of hyperactive reflexes and upper motor neuron lesions.

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Correct Answer is C

Explanation

Choice A rationale

Fasting for at least 8 hours is usually required for certain diagnostic tests that involve anesthesia or contrast media, but it is not necessary for a bone scan. A bone scan typically involves the injection of a radioactive tracer and does not require fasting.

Choice B rationale

Completion of a bowel cleansing regimen is necessary for certain gastrointestinal procedures such as colonoscopy, but it is not relevant for a bone scan. A bone scan focuses on detecting bone abnormalities and does not involve the digestive system.

Choice C rationale

Emptying the bladder is important before a bone scan to ensure clear imaging of the pelvic bones. A full bladder can obscure the view and interfere with the accuracy of the scan. Ensuring the bladder is empty helps in obtaining better diagnostic images.

Choice D rationale

No allergy to penicillins is crucial information for procedures involving antibiotics, especially for patients with a history of allergic reactions. However, it is not pertinent to a bone scan, which uses a radioactive tracer rather than antibiotics.

A. Onychocryptosis. B. Pediculosis. C. Tinea pedis. D. Onychomycosis.

Correct Answer is D

Explanation

Choice A rationale

Onychocryptosis, also known as an ingrown toenail, is a condition where the edge of the toenail grows into the surrounding skin. This can cause pain, swelling, and sometimes infection. It is not related to a dermatophyte infection, which is a fungal infection affecting the toenail.

Choice B rationale

Pediculosis refers to an infestation of lice, which are small parasitic insects that feed on human blood. It typically affects areas like the scalp, body, and pubic region but not the toenails. Pediculosis is not related to fungal infections.

Choice C rationale

Tinea pedis, commonly known as athlete's foot, is a fungal infection that primarily affects the skin on the feet, particularly between the toes. While it is a dermatophyte infection, it does not specifically affect the toenails.

Choice D rationale

Onychomycosis is a fungal infection of the toenails or fingernails. It is caused by dermatophytes, yeasts, or nondermatophyte molds. The infection leads to thickened, brittle, and discolored nails, which accurately describes a dermatophyte infection of the toenail.

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Which occurs when reflexes are hyperactive when the foot is abruptly dorsiflexed?

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Naxlex Comprehensive Predictor Exams

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Correct Answer is C

Explanation

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Correct Answer is D

Explanation

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