Question

question 2
3 tries left
what part of the brain is influential in determining when to sleep?
hypothalamus
thalamus
hippocampus
frontal lobe

Explanation:

The hypothalamus contains the suprachiasmatic nucleus which regulates the body's internal clock and plays a key - role in determining sleep - wake cycles. The thalamus relays sensory and motor signals and is not the main sleep - regulating center. The hippocampus is mainly associated with memory formation. The frontal lobe is involved in higher cognitive functions like decision - making, not primarily in sleep regulation.

Answer:

hypothalamus