StudyXY
RegisterLog in
Back to AI Flashcard MakerBiology /Brain and Behavior Chapter 4: Neural Conduction & Synaptic Transmission Part 2

Brain and Behavior Chapter 4: Neural Conduction & Synaptic Transmission Part 2

Biology25 CardsCreated about 1 month ago

This deck covers essential concepts from Chapter 4 on neural conduction and synaptic transmission, focusing on action potentials, synaptic integration, and conduction mechanisms.

PrintEmbedImportReport

A neuron normally fires when

The degree of depolarization on the axon adjacent to the hillock exceeds the threshold of excitation

Tap or swipe ↕ to flip
Swipe ←→Navigate
1/25

Key Terms

Term
Definition

A neuron normally fires when

The degree of depolarization on the axon adjacent to the hillock exceeds the threshold of excitation

APs are said to be all-or-none: this means that all APs
In a particular neuron are the same
Another word for “integration” is
“Summation”
There are three kinds of spatial summation and
Two kinds of temporal summation
Action potentials are produced by the
Opening of voltage-activated sodium channels
During an action potential, the change in membrane potential associated with the influx of sodium ions triggers the
Opening of potassium channels
Log in to view all terms

Related Flashcard Decks

Biology

A-LEVEL PE (OCR): PAPER 3 - Ethics and Deviance in Sport

These flashcards describe key performance-enhancing methods, including blood doping—a technique used to increase red blood cell count and oxygen-carrying capacity, commonly by endurance athletes—and anabolic steroids, which boost strength, aggression, and training capacity. They highlight how these methods aim to enhance performance, often through artificial physiological manipulation.

21 cards
View Deck
Biology

A-LEVEL PE (OCR): PAPER 1 - Energy for Exercise

These flashcards cover fundamental concepts of cellular energy, including ATP as the primary energy source for muscular contraction, the role of the enzyme ATPase in ATP breakdown, and the definition of exothermic reactions that release energy. They provide a concise overview of how energy is produced and utilized in biological systems.

47 cards
View Deck
Biology

3MB Psychiatry: Neurobiology of Mood

This flashcard set explains the brain’s appetitive (approach) and aversive (defensive) mood systems, describing how they drive behaviour toward reward or avoidance of threat, and identifies the key neurotransmitters associated with each—dopamine for approach and serotonin for avoidance.

8 cards
View Deck
Biology

Psychology - Chapter 3 Biological Psychology Part 3

This deck covers key concepts from Chapter 3 of Biological Psychology, focusing on brain structures and their functions, including the occipital lobe, limbic system, brain stem, and nervous systems.

23 cards
View Deck
Biology

Psychology - Chapter 3 Biological Psychology Part 2

This flashcard deck covers key concepts from Chapter 3 of Biological Psychology, focusing on neurotransmitters, brain structures, and their functions.

25 cards
View Deck
Biology

Animal Behaviour - Applied Cat Ethology

In applied cat ethology, behavioural genetics are primarily inherited through the paternal line. This means certain behavioural traits, such as temperament or sociability, can be strongly influenced by the genetics of the sire (father).

56 cards
View Deck

Study Tips

  • Press F to enter focus mode for distraction-free studying
  • Review cards regularly to improve retention
  • Try to recall the answer before flipping the card
  • Share this deck with friends to study together
Brain and Behavior Chapter 4: Neural Conduction & Synaptic Transmission Part 2
TermDefinition

A neuron normally fires when

The degree of depolarization on the axon adjacent to the hillock exceeds the threshold of excitation

APs are said to be all-or-none: this means that all APs
In a particular neuron are the same
Another word for “integration” is
“Summation”
There are three kinds of spatial summation and
Two kinds of temporal summation
Action potentials are produced by the
Opening of voltage-activated sodium channels
During an action potential, the change in membrane potential associated with the influx of sodium ions triggers the
Opening of potassium channels
The end of the rising phrase of an action potential occurs when the
Sodium channels close
After a neuron fires, the resting potential is re-established by the
Random movement of ions
The brief period of time immediately after the initiation of an action potential when it is absolutely impossible to initiate another one in the same neuron is called the
Absolute refractory period
The wave of absolute refractoriness that follows an action potential
Keeps the action potential from spreading actively back along an axon towards the cell body
Neurons do not normally fire more than 1,000 times per second because
The absolute refractory period is typically about 1 millisecond
Conduction of action potentials along an axon is
Nondecremental
Active conduction is to passive conduction as
APs are to EPSPs
The conduction of an action potential along any axon is mediated by the action of
Voltage-activated ion channels
Conduction of APs from the axon into the cell body and dendrites of a multipolar neuron is
Antidromic
Action potentials can be conducted A) actively B) passively C) orthodromically D) antidromically
All of the above
Conduction of action potentials in myelinated axons
Is faster than in unmyelinated axons
In large myelinated human motor neurons, impulses travel at about
60 meters per second
With respect to the maximum speed of axonal conduction in motor neurons, cats are to humans as
100 is to 60 meters per second
Neurons without axons do not
Generate action potentials
In neurons without axons, conduction occurs entirely in the form of
Passive, decrementally conducted potentials
Axodendritic synapses
Always terminate on dendrites
Prevalent in the cytoplasm of most terminal buttons are A) nuclei B) mitochondria C) synaptic vesicles
Both B and C
Nondirected synapses A) involve the release of neurotransmitter molecules diffusely into the extracellular fluid B) include string-of-beads synapses C) involve the movement of neurotransmitter molecules across gap junctions
Both A and B
Both presynaptic facilitation and inhibition are mediated by
Axoaxonic synapses