Pons, cerebellum and medulla are part of which brain?

Correct Answer: C

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: C

Rationale: Spinal roots L5-S1 or sciatic nerve is the correct answer because Lasegue's sign, also known as the straight leg raise test, is used to diagnose sciatica or lumbar radiculopathy. Pain elicited during this test indicates irritation or compression of the sciatic nerve or its roots, typically due to a herniated disc.

Correct Answer: A

Rationale: The resting membrane potential is primarily determined by the permeability of the cell membrane to potassium ions (K+), which is greater than its permeability to sodium ions (Na+). This is because the membrane has more leak channels for K+ than for Na+, allowing K+ to diffuse out of the cell, creating a negative intracellular environment. The Na+, K+ ATPase pump maintains this gradient but does not directly set the resting potential. Inhibition of the pump would eventually disrupt the gradient, but the potential does not immediately fall to zero.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.