Exam (elaborations)
biol 235 midterm 2A (120 questions and answers).
- Course
- Institution
biol 235 midterm 2A (120 questions and answers).
[Show more]
Content preview
biol 235 midterm 2A(120 questions and
answers)
sympathetic stimulation - answer The process
that results in preparing the body for exercise;
"fight or flight" mechanism;
- increased heart rate
- dilated pupils
constriction of kidneys and digestive tract
alpha receptors - answer adrenergic receptors
that are found in smooth muscles and constrict
arteries when stimulated by norepinephrine and
epinephrine; increases bp and blood flow to heart
A1 receptors - answer involved in smooth muscle
contraction;
- contraction of bronchioles, blood vessels, internal
urethral sphincter, and muscular wall
A2 receptors - answer -Located on presynaptic
axons
,-When stimulated, result in inhibition of
norepinephrine release in the synapse; this may be
a negative-feedback system
Beta receptors - answer adrenergic receptors that
are found in the heart, lungs, and vascular smooth
muscle; involved in the relaxation of cells and
dilation of blood vessels and found on tissues
throughout the body
B1 receptors - answer increase cardiac output by
increasing heart rate, stroke volume, and rate of
relaxation through dilation
B2 receptors - answer smooth muscle relaxation
throughout the body; ex) relaxation of muscular
war and relaxation of internal urethral sphincter
muscarinic ACH receptors - answer Can be
stimulated by muscarine (from poisonous
mushrooms)
Found in CNS and plasma membrane of smooth and
cardiac muscles and glands innervated by
autonomic motor neurons; triggers
parasympathetic stimulation
, parasympathetic stimulation - answer 'rest and
digest'; lowers ventilation rate, release blood flow
to gut and other organs, decrease heart rate and
bp
water soluble hormone - answer a lipophobic
hormone that binds to a receptor on or within the
plasma membrane to initiate an intracellular
signalling cascade ex) glucagon, insulin, ADH,
oxytocin
water soluble hormone steps - answer 1. bind to
receptors on the surface of the cell which are
coupled to internally anchored G proteins
2. signal transduction: the receptor complex
activates second messenged (cAMP, Ca2+) which
initiate cell activity
3. use of second messengers enables the
amplification of the initial signal as more molecules
are activated (enzyme cascade)
4. enzyme 3 stimulates the breakdown of glycogen
into glucose
lipid soluble hormone - answer liphophilic
hormone that can move freely into membrane and
into cell ex) progesterone, estrogen, testosterone
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 GUARANTEEDSUCCESS. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $16.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
73243 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now