Exam 1 - BIOS252 / BIOS 252 (Latest 2024 /
2025) : Anatomy And Physiology II With Lab -
Chamberlain
What is homeostasis? - ANSWER 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? - ANSWER chemical - cellular - tissue -
organ - organ system - organismal
What is the nervous system made of? - ANSWER 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? - ANSWER
Input - Processing - Output. Explain.
Most of our wiring is _____. - ANSWER insulated.
,Neuron - ANSWER
Describe the soma, neurofibrils, Nissl bodies, dendrites, axon and axon hillock. - ANSWER
Soma- body of the neuron cell.
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? - ANSWER By number of processes extending
from the soma.
What is the difference in multipolar nerons, bipolar neurons, and anaxonic neurons? -
ANSWER 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? - ANSWER two way passage of proteins, organelles,
and other materials along the axon.
What is anterograde and retrograde transport? - ANSWER anterograde- moves
down the axon, away from the soma.
retrograde- moves up the axon, towards the soma.
What are 3 properties that enable communication with other cells? - ANSWER
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? - ANSWER (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)
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 a-grade. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
