100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Biology 252 Exam 1 Questions and Answers $11.49
Add to cart
Quickly navigate to
Preview
  2.  
  3. 2024/2025
  4.  
  5. 2024/2025

Exam (elaborations)

Biology 252 Exam 1 Questions and Answers
 0 purchase
  • Course
  • 2024/2025
  • Institution
  • 2024/2025

Biology 252 Exam 1 Questions and Answers What is homeostasis? - Ans:-how varied components of living things adjust to maintain a constant internal living environment. There is a balanced dynamic state! Diseases result from homeostatic imbalances (diabetes) What are the levels of organization? ...

[Show more]

Preview 3 out of 26  pages

Document information

  • October 23, 2024
  • 26
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • biology 252 exam 1 questions and answers

Written for

  • 2024/2025
  • 2024/2025

Seller

avatar-seller
GraceAmelia

Reviews received

Content preview

©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




Biology 252 Exam 1 Questions and
Answers


What is homeostasis? - Ans:✔✔-how varied components of living things adjust to maintain a constant

internal living environment. There is a balanced dynamic state! Diseases result from homeostatic

imbalances (diabetes)


What are the levels of organization? - Ans:✔✔-chemical - cellular - tissue - organ - organ system -

organismal


What is the nervous system made of? - Ans:✔✔-The Central nervous system (brain and spinal cord) and

the peripheral nervous system (cranial nerves and spinal nerves).


What is the big picture of the nervous system? What does this mean? - Ans:✔✔-Input - Processing -

Output. Explain.


Most of our wiring is _____. - Ans:✔✔-insulated.


Neuron - Ans:✔✔-


Describe the soma, neurofibrils, Nissl bodies, dendrites, axon and axon hillock. - Ans:✔✔-Soma- body of

the neuron cell.
Page 1/26

, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




Neurofibrils- work with microtubules to compartmentalize rough ER into Nissl bodies.


Nissl bodies- help identify neurons in tissue sections with mixed cell types


Dendrites- primary site for receiving signals from other neurons


axon hillock- nerve fiber where axon originates


axon- conducs nerve signals to remote point from the soma. contains Varicosities secrete NTs.


How are neurons classified? - Ans:✔✔-By number of processes extending from the soma.


What is the difference in multipolar nerons, bipolar neurons, and anaxonic neurons? - Ans:✔✔-

multipolar - one axon with multiple dendrites. Includes most neurons of the brain and spinal cord.


bipolar- one axon and one dendrite.


Anaxonic- multiple dendrites, no axon. Communicate through dendrites and produce no action. found in

brain, retina, and adrenal medulla.


What is axonal transport? - Ans:✔✔-two way passage of proteins, organelles, and other materials along

the axon.


What is anterograde and retrograde transport? - Ans:✔✔-anterograde- moves down the axon, away

from the soma.


retrograde- moves up the axon, towards the soma.

Page 2/26

, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




What are 3 properties that enable communication with other cells? - Ans:✔✔-1. Excitability (response to

stimuli or environmental change).


2. Conductivity ( production of electrical signals that are conducted to other cells at distant locations).


3. Secretion (when a signal reaches the end of a nerve fiber, neuron secretes a NT that crosses gap and

enters the next cell).


What are sensory neurons? - Ans:✔✔-(dealing with the five senses) They are a part of the PNS (afferent).

They conduct signals from receptors to the nervous system. Detect stimuli and transmit info TOWARDs

the CNS.


somatic: bones, joints, and muscles


visceral: comes from inside us like internal organs


(organized by location)


What are interneurons? - Ans:✔✔-They lie within the CNS. They receive signals and carry out the

integrative function of the nervous system. They take info from sensory neurons in the PNS and make

decisions.


What are motor (efferent) neurons? - Ans:✔✔-sends signals AWAY from the CNS to primarily muscle

cells (effector).


somatic: skeletal muscle

Page 3/26

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 GraceAmelia. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $11.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

69052 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 15 years now

Start selling
$11.49
  • (0)
Add to cart
Added