The epithelial tissue found in areas subject to considerable friction and abuse, such as the esophagus, is:

Correct Answer: D

Rationale: Stratified squamous epithelium, with multiple layers, protects areas like the esophagus from friction and wear.

Correct Answer: C

Rationale: Insulin increases glucose uptake by facilitating transporter movement to the muscle cell membrane.

Correct Answer: A

Rationale: Thirst is triggered by increased plasma tonicity (osmoreceptors in hypothalamus); low volume also stimulates it, and ADH increases.

Correct Answer: A

Rationale: Respiratory acidosis is defined by high PCO2; kidneys compensate by raising HCO3-.

Correct Answer: C

Rationale: Factor VIII deficiency (hemophilia A, X-linked) prolongs clotting time; mild reductions cause bleeding.