Endocrine System Flashcards
The hypothalamus is a member of the forebrain, where does it funnel signals to? Where does it receive these signals?
Pituitary gland and the brain, respectively
What do ADH and the kidneys have to do with one another?
ADH functions to control the amount of water the kidneys reabsorb while filtering the blood of waste
What would happen if a pregnant woman did not have functional oxytocin receptors?
Her uterus would not be receiving signals to contract and push the baby out
What would happen if the pituitary gland were to stop functioning?
The body would lose its hormone conductor and hormones would be produced in insufficient quantities
Proteins made in the rough endoplasmic reticulum that then travel via vesicles are known as what?
2nd degree messengers
What are the characteristics of a protein that is a 1st degree messenger?
- Binds to a receptor within the cell
- Alters transcription/translation
What is the main feature of 2nd degree messengers?
Amplification
The primary role of the parathyroid gland is?
to regulate Ca2+ levels
Antibodies directed against pancreatic cells result in these cells’ destruction. What lab abnormality might be seen in this scenario?
A. elevated insulin
B. elevated glucagon
C. elevated glucose
D. elevated lipase
elevated glucose levels
Each hormone’s organ specificity is determined by..?
The hormone’s ability to interact with a specific receptor on a specific cell type
In terms of target cell signaling, rate these three terms in order of proximity of receptor cells:
A. Paracrine
B. Autocrine
C. Endocrine
- Autocrine (closest) 2. Paracrine
3. Endocrine (furthest)
Unlike polypeptide hormones, steroids are more likely to have….?
A. a receptor on the cell membrane
B. a receptor in the nucleus
C. A receptor within the cytosol
A receptor within the nucleus
