Exam (elaborations)
GCU BIO 202 Exam 2 Questions & Correct Verified Answers| Already Passed
- Course
- Institution
GCU BIO 202 Exam 2 Questions & Correct Verified Answers| Already Passed
[Show more]
Seller
Follow
Content preview
GCU BIO 202 Exam 2 Questions &Correct Verified Answers| Already
Passed
Process of amplification - ✔✔-the binding of a small number of hormones to membrane receptors
-leads to thousands of second messangers in cell
-magnifies effect of hormone on target cells
Down regulation - ✔✔-Presence of hormone triggers decrease in number of hormone receptors
-when levels are high, cells become less sensitive
-some broken down by target cells
-receptors are filled up
-example type 2 diabetes
Up regulation - ✔✔-Absence of a hormone triggers increase of number of hormone
receptors -when levels of particular hormone are low, cells become more sensitive -More
Receptors are available
Intracellular response of a steroid hormone - ✔✔-steroid enters target
cell -induces conformational change
-binds to DNA and starts transcription
-mRNA's are produced, amplifying signal
-translated many times, amplifying signal
Three ways endocrine reflexes can be triggered - ✔✔-humoral stimuli
, -hormonal stimuli
-neural stimuli
humoral stimuli - ✔✔Changes in composition of extracellular fluid
hormonal stimuli - ✔✔Arrival or removal of specific hormone
neural stimuli - ✔✔Arrival of neurotransmitters at neuroglandular junctions
simple endocrine reflexes - ✔✔-Involves only one hormone
-Controls hormone secretion by the heart, pancreas, parathyroid gland, and digestive tract
Complex endocrine reflexes - ✔✔Involves
-One or more intermediary steps
-Two or more hormones
-i.e. The hypothalamus
Neuroendocrine reflexes - ✔✔-Pathways include both neural and endocrine components
Three ways hypothalamus can interact with the endocrine or nervous system - ✔✔-Secretes
regulatory hormones (special hormones that control endocrine cells in pituitary gland
-Acts as an endocrine organ
-Contains autonomic centers (exert direct communication control over endocrine cells of
adrenal medulla
Adenohypophysis - ✔✔Anterior pituitary
Neurohypophysis - ✔✔Posterior pituitary
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller KenAli. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
78834 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now