Pineal Histology Flashcards
1
Q
When is the pineal gland largest?
A
First decade of life
2
Q
Where is the pineal gland?
A
Roof of third ventricle
3
Q
What does the pineal gland produce?
A
Melatonin at night
4
Q
What are the two cell present in the pineal gland?
A
Pinealocytes
Astrocytes
5
Q
What is brain sand?
A
Concretions of hydroxyapatite and calcium with no known function
6
Q
What nerves end on the pineal gland?
A
Sympathetic nerve fibers
7
Q
When is the pineal gland most active?
A
Low light periods
8
Q
What other endocrine gland does melatonin inhibit? What hormones are suppressed as a result?
A
Hypothalamus
FSH, LH
