An ice bag left on the body for longer than 20 minutes may cause

Correct Answer: A

Rationale: The correct answer is A because prolonged application of ice causes vasoconstriction, not blood vessels opening. Vasoconstriction reduces blood flow, minimizing tissue damage. Choices B and D are incorrect as ice can increase bleeding and swelling. Choice C is irrelevant as ice does not cause fever.

Correct Answer: D

Rationale: The correct answer is D: Left. The left cerebral hemisphere controls the motor activity on the right side of the body due to contralateral organization in the brain. This means that the left hemisphere is responsible for controlling the opposite side of the body. The right hemisphere controls the left side of the body. The other choices (A: Right, B: Middle, C: Spinal) are incorrect as they do not align with the known lateralization of motor functions in the brain.

Correct Answer: D

Rationale: The correct answer is D: Brittle hair or fingernails. Hypothyroidism, a condition where the thyroid gland does not produce enough thyroid hormone, can lead to dry and brittle hair and nails due to reduced metabolic activity affecting hair and nail growth. This symptom is commonly associated with hypothyroidism. A: Increased hair growth is not a symptom of hypothyroidism but rather hyperthyroidism, where there is an excess of thyroid hormone leading to increased metabolic rate and hair growth. B: Weight loss is more commonly associated with hyperthyroidism due to increased metabolism. C: Nausea or diarrhea are not typical symptoms of hypothyroidism but can occur in other conditions like gastrointestinal issues.

Correct Answer: D

Rationale: When a joint is extended beyond its normal motion, it is termed as hyperextension. This occurs when the joint is moved past its anatomical position in extension. Flexion (choice A) is the bending of a joint, opposed (choice B) is not a term related to joint movement, and pronation (choice C) refers to the rotation of the forearm or foot. Therefore, the correct answer is D as it accurately describes the situation where a joint is extended beyond its normal range of motion.

Correct Answer: C

Rationale: The correct answer is C: Autopsy. An autopsy is a thorough examination of a body by a pathologist to determine the cause of death. Atrophy (A) refers to a decrease in cell size or tissue, not related to a postmortem examination. Anatomy (B) is the study of the structure of living organisms, not specific to determining cause of death. Avulsion (D) is the tearing away of a body part, also not related to a postmortem examination. Autopsy is the only term directly linked to the process of examining a body after death to determine the cause of death.