100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
BIOL 373 Self-test questions with verified answers CA$22.35   Add to cart

Exam (elaborations)

BIOL 373 Self-test questions with verified answers

 3 views  0 purchase
  • Course
  • BIOL 373
  • Institution
  • BIOL 373

BIOL 373 Self-test questions with verified answers

Preview 2 out of 13  pages

  • September 18, 2024
  • 13
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • BIOL 373
  • BIOL 373
avatar-seller
BIOL 373 Self-test

Unit 1 - correct answer ✔✔



What is physiology - correct answer ✔✔the science of the function of living systems

=> study of homeostatic mechanisms



Homeostasis - correct answer ✔✔maintenance of relatively stable internal environment around set
point



History of homeostasis (2 guys) - correct answer ✔✔1. Claude Bernard

2. Walter Cannon



Pathophysiology - correct answer ✔✔study of failure to compensate



Disease - correct answer ✔✔failure to compensate to internal/external changes



Compensation - correct answer ✔✔body tries to correct disturbed homeostasis

=> success = restored homeostasis

=> failure = illness



Local control - correct answer ✔✔restricted to tissue or cell involved

=> e.g. when [O2] in tissue decreases => cells lining small blood vessels in area notice change + respond
by secreting signal => signal molecule diffuses to muscles to relax + dilate blood vessel



Reflex control - correct answer ✔✔systemic changes throughout the body + any long-distance pathway

e.g. maintaining blood pressure to drive blood flow => bp is bodywide

, Response loop steps (7) - correct answer ✔✔stimulus, sensor, input signal, integrating center, output
signal, target, response



Feedback mechanisms (3) - correct answer ✔✔1. negative feedback

2. feedforward control

3. positive feedback



T/F chemical and electrical signals can be produced by all cells - correct answer ✔✔F.

Electrical signals => only nerve and muscle cells



Chemical signals => secreted in ECF => by ALL cells



Lipophobic molecule = ___ receptor



Lipophilic molecule = __ receptor - correct answer ✔✔lipophobic = surface receptor



lipophilic = intracellular receptor



T/F Lipophilic signal molecules produce rapid cellular repsonses - correct answer ✔✔F. Lipophilic signal
molecules => bind to cytosolic receptors => usually activates synthesis of new proteins = slow



Lipophobic signal molecules => bind surface receptors => usually GPCR => signal transduction = fast



Ways cells can change response to signals (increase or decrease) - correct answer ✔✔Increase:

=> increase expression of genes that codes for receptors => to increase # of receptor proteins



Decrease: internalize surface receptors



Change receptor sensitivity = phosphorylation

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 BravelRadon. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for CA$22.35. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

77333 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
CA$22.35
  • (0)
  Add to cart