The Suprachiasmatic Nucleus (SCN)is Active During the Daytime in Diurnal

question 41

True/False

The suprachiasmatic nucleus (SCN)is active during the daytime in diurnal animals,like humans,but is active during the night in nocturnal animals,like rodents.​ 

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Definitions:

Estrogen

Substance that exerts biologic effects characteristic of estrogen hormone, such as stimulating female secondary sexual characteristics, growth, and maturation of long bones, and help controlling the menstrual cycle.

Ductus Venosus

A fetal blood vessel that connects the umbilical vein to the inferior vena cava, bypassing the liver.

Umbilical Vein

A blood vessel in a fetus that carries oxygenated blood from the placenta to the fetus.

Inferior Vena Cava

Vein that returns blood from the lower limbs and the greater part of the pelvic and abdominal organs to the right atrium.