Exam (elaborations)
BIOS 256 EXAM 2 CHAMBERLAIN (Latest 2024 / 2025) Questions and Answers (Verified Answers)
- Course
- Institution
BIOS 256 EXAM 2 CHAMBERLAIN (Latest 2024 / 2025) Questions and Answers (Verified Answers)
[Show more]
Content preview
BIOS 256 EXAM 2 CHAMBERLAIN (Latest )Questions and Answers (Verified Answers)
What is the major cause of membrane depolarization?
influx of sodium ions
The neuroglia forming the myelin sheath around neuron fibers in the PNS are:
Schwann cells
The resting membrane potential is characterized by
high potassium and protein inside the cell, and high sodium and calcium outside the cell
Inside an activated cell
Na+ and Ca++ are higher in concentration than in the resting state
An action potential
is propagated by opening of voltage-gated sodium channels
What is saltatory conduction in a neuron? Is it fast or slow?
Saltatory conductions describes how an action potential jumps node to node in a myelinated fiber. It is
fast.
The substance released at axonal endings to propagate a excitatory postsynaptic impulse is called a(n)
neurotransmitter
When a postsynaptic neuron receives repeated stimuli in a short time, this causes
temporal stimulation
An excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle is
acetylcholine
A neural circuit with input traveling along several pathways for integration by several CNS systems and
providing several responses is a
parallel processing circuit
Brain wave amplitude
, reflects the number of neurons firing synchronously
What characterizes the fourth stage of sleep in the sleep cycle?
EEG pattern is dominated by delta waves; skeletal muscles are relaxed; arousal difficult
Fact memory
ability to learn specific information
Activation of the reticular activating system results in
wakefulness
Which controls the autonomic nervous system?
hypothalamus
Which stimulates inspiration?
pons apneustic center
Which is innervated by the somatic nervous system
skeletal muscle
The site of origin of the preganglionic fibers of the parasympathetic nervous system is the
brain stem and the sacral region of the spinal cord
All preganglionic axons of the autonomic nervous system release
the same transmitter as the one released by parasympathetic postganglionic axons
Which provides the ultimate control for the sympathetic nervous system?
hypothalamus
Potentially damaging stimuli that result in pain are selectively detected by
nociceptors
Which type of receptors frequency of sensory neuron action potentials increases with the generator
potential and stimulus amplitude?
tonic
Which skin receptors detect texture and vibrations?
Meissner's corpuscles
When a skin area's two-point threshold is large, that skin has
low sensory acuity
How does a gustatory cell respond to sour tastes?
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 tutorWADE. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $18.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67096 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now