Pineal Gland Flashcards
1
Q
What is the main product of the pineal gland?
A
melatonin
2
Q
What 4 things does melatonin regulate
A
- Sleep cycles
- Breeding
- Coat changes
- Hibernation
3
Q
Secretion of melatonin is affected by duration of ____
A
night
4
Q
Long days ____ melatonin while shorter days _____ melatonin
A
lower, increase
5
Q
Fall breeders will have ____ melatonin during the fall, so GnRH is _____
A
increased, stimulated
6
Q
Spring breeders will have ___ melatonin during the fall, so GnRH is ____
A
increased, inhibited
7
Q
The pineal gland in mammals gets signals from where?
A
light signals from eyes
8
Q
What is a histologic characteristic feature of the pineal gland?
A
“brain sand”, deposits of calcium
