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6 Cards in this Set
- Front
- Back
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endrogenous circannual rhythm |
a roughly 24 hour cycle in the physiological processes of living beings, marked by an internal clock of sorts |
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zeitgeber |
a German term referring to the stimulus that resets the circadian rhythm |
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jet lag |
a disruption of the circadian rhythm due to crossing time zones |
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suprachiasmatic nucleus (SCN) |
a part of the hypothalamus, located just above the optic chiasm, that provides the main control of the circadian rhythms for sleep and body temperature |
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pineal gland |
an endocrine gland located just posterior to the thalamus, that releases the hormone melatonin |
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melatonin |
a hormone that influences both the circadian rhythm and the circannual rhythm, and is released at night, usually spiking about two or threeh ours before bedtime, making us sleepy |
