The Biological Clock Flashcards
Biorhythms appear to be regulated by a _ or biological clock
Self-sustaining timing mechanism
Biological clock synchronized with _ cycle
Light-dark
Biological clock synchronized with light-dark cycle through interactions between _ and _
Hypothalamus
Pineal gland
Light entering eye reaches retina, stimulating _ of brain
Visual cortex
Some retinal nerve fibers are connected to _ nuclei
Suprachiasmatic
Suprachiasmatic nuclei that retinal nerves are connected to are two tiny structures located within _ of brain
Hypothalamus
Stimulation of Suprachiasmatic nuclei causes _ to send signals to _
Hypothalamus
Pineal gland
Pineal gland is a small oval gland located just above _
Brainstem
Pineal gland is often known as third eye because it is triggered by levels of _
Light and dark
Pineal gland secretes melatonin in response to signals received from _
Retina
(Mediated by hypothalamus)
