Abnormal fluid accumulation in the lungs would be detected during breathing by

Correct Answer: B

Rationale: Auscultation (listening with a stethoscope) detects abnormal lung sounds (e.g., crackles) from fluid accumulation. Percussion assesses density, inspection is visual, and palpation is touch.

Correct Answer: A

Rationale: Hypoglossal (CN XII) motor neurons innervate tongue muscles (effectors). Their destruction impairs tongue movement, not sensory, integration, or CNS pathways.

Correct Answer: A

Rationale: Synaptic ends (terminals) release neurotransmitters to signal another cell, concluding the axon’s impulse conduction. Axon conducts, dendrites receive, and cell body processes.

Correct Answer: C

Rationale: Gray matter comprises neuronal cell bodies, dendrites, and unmyelinated axons, forming CNS regions like the cortex. Myelinated axons are white matter.

Correct Answer: D

Rationale: The straight sinus is formed by the union of the inferior sagittal sinus (along the falx cerebri) and the great cerebral vein (Galen), draining into the confluence of sinuses. The superior sagittal sinus contributes to other sinuses, and the transverse sinus is downstream.