Gland Locations
This "Master Gland" is located at the base of the brain.
Pituitary Gland
his hormone lowers blood sugar when it is too high.
Insulin
The thing or condition that triggers a feedback loop.
Stimulus
Jordan has difficulty sleeping; the doctor suspects this gland is not making enough melatonin.
Pineal gland
This hormone is produced by the embryo/placenta and is what pregnancy tests look for.
HCG
These glands are found sitting directly on top of the kidneys.
Adrenal Glands
This hormone is responsible for sperm production.
Testosterone
This type of feedback loop moves away from the starting point to "amplify" a cycle until it is completed.
Positive Feedback Loop
Susan has high blood sugar; the doctor suspects this organ is damaged.
This hormone stimulates the release of eggs (ovulation) in people with ovaries.
LH (Luteinizing Hormone)
This gland is located in the chest, near the sternum, and shrinks as you get older.
Thymus
This hormone regulates the sleep-wake cycle (circadian rhythms).
Melatonin
This is the process of maintaining a stable internal environment, even when the outside changes.
Homeostasis
Jonathan is getting sick often and lacks T-cells; the doctor suspects a problem with this gland.
Thymus
This hormone builds the endometrium (uterine lining).
Estrogen
This gland is located in the brain, sitting just above the pituitary gland.
Hypothalamus
This hormone causes uterine contractions during childbirth and aids in social bonding.
Oxytocin
In a feedback loop, these specific cells are the only ones that can receive and respond to a hormone signal.
Target Cells
Riley feels jittery and has high blood pressure; her levels of this "fight or flight" hormone are likely too high.
Epinephrine (or Adrenaline)
This hormone is produced by Alpha cells in the pancreas to raise blood sugar.
Glucagon
This butterfly-shaped gland is located at the base of the neck.
Thyroid
This hormone stimulates the development of T-cells for the immune response.
Thymosin
This type of feedback loop counteracts a stimulus. Most homeostatic systems (like blood sugar or temperature) are regulated by TWO of this type of loop.
Negative Feedback Loop
Rhonda says she keeps drinking water but when she pees it is highly concentrated. She feels nauseous and confused. What hormone could be causing her issues?
Antidiuretic Hormone (ADH or vasopressin)
This hormone maintains the endometrium and prepares the uterus for pregnancy.
Progesterone