Denisha is working in the lab and has isolated some cells from a rat brain. Since the cells seem to be producing a steady circadian rhythm, Denisha hypothesizes that these cells came from the rat's _____.
A) retina
B) SCN
C) locus coerueus
D) pituitary gland

Question

Quizplus · Accepted Answer

The suprachiasmatic nucleus (SCN) is the primary circadian pacemaker in mammals, including rats. Therefore, if Denisha has isolated some cells from a rat brain that are producing a steady circadian rhythm, it is likely that they came from the SCN.

Denisha Is Working in the Lab and Has Isolated Some