Recent

  • Show all results for ""

🎧 New: AI-Generated Podcasts Turn your study notes into engaging audio conversations. Learn more

The Myelin Sheath Quiz
60 Questions
1 Views

The Myelin Sheath Quiz

Created by
@StrongerLlama

Podcast Beta

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which ion is primarily responsible for the positive charge outside of a neuron at rest?

  • Sodium (Na+) (correct)
  • Potassium (K+)
  • Proteins (A-)
  • Chloride (Cl-)

    • What is the approximate membrane potential of a neuron at rest?

  • -70 mV (correct)
  • -40 mV
  • -50 mV
  • -60 mV

    • What is the main fuel source for the Sodium-Potassium pump?

  • Proteins (A-)
  • Sodium (Na+)
  • Chloride (Cl-)
  • ATP (correct)

    • What is the threshold voltage for an action potential to occur?

    <p>-55 mV</p> Signup and view all the answers

    What happens to the voltage dependent Na+ channels during depolarization?

    <p>They close</p> Signup and view all the answers

    What happens to the voltage dependent K+ channels during repolarization?

    <p>They open</p> Signup and view all the answers

    Which part of the neuron receives information from other neurons?

    <p>Dendrites</p> Signup and view all the answers

    What is the main function of the axon?

    <p>Transmits electrical information within the neuron</p> Signup and view all the answers

    What is the direction of axoplasmic transport from the soma to the terminal buttons?

    <p>Anterograde</p> Signup and view all the answers

    What attaches to the 'to be transported' anterograde item and moves it down the microtubules?

    <p>Kinesin</p> Signup and view all the answers

    What is the function of the neuron membrane?

    <p>Separates inside from outside of neurons</p> Signup and view all the answers

    What is inserted into the neuron membrane?

    <p>Both receptors and ion channels</p> Signup and view all the answers

    Which plant was used by Aztec physicians in Central America to treat toothaches?

    <p>Chili pepper</p> Signup and view all the answers

    Opium is derived from the latex in the husk of which flower?

    <p>Poppy</p> Signup and view all the answers

    Which drug was widely used in ancient history and was first cultivated by Sumerians in 3400 BC?

    <p>Opium</p> Signup and view all the answers

    Who made the mixture of wine and cocaine called 'Vin Mariani' that was adored by elites?

    <p>Angelo Mariani</p> Signup and view all the answers

    Which substance was removed from 'Vin Mariani' and Coca-Cola in the early 20th century due to health issues?

    <p>Cocaine</p> Signup and view all the answers

    Cannabis is believed to have been used in ancient Central and South Asia for thousands of years. In a 2,700-year-old grave in western China, how many grams of cannabis was found?

    <p>789 grams</p> Signup and view all the answers

    Which cells produce the myelin sheath in the central nervous system (CNS)?

    <p>Oligodendrocytes</p> Signup and view all the answers

    Where is the only place where ions can be exchanged in a myelinated neuron?

    <p>Nodes of Ranvier</p> Signup and view all the answers

    What is the process called when the action potential jumps from one Node of Ranvier to another in a myelinated neuron?

    <p>Saltatory conduction</p> Signup and view all the answers

    What is the primary function of the action potential?

    <p>To communicate with other neurons</p> Signup and view all the answers

    What happens when the action potential hits the terminal button of a neuron?

    <p>Ca2+ channels open</p> Signup and view all the answers

    What is the purpose of the synaptic vesicles in the terminal button of a neuron?

    <p>To store neurotransmitters</p> Signup and view all the answers

    Which of the following is NOT a primary cannabis species?

    <p>Cannabis hybrid</p> Signup and view all the answers

    What is the psychoactive cannabinoid found in marijuana?

    <p>Delta-9-tetrahydrocannabinol (Δ9-THC)</p> Signup and view all the answers

    Which chemical class is NOT found in cannabis plants?

    <p>Steroids</p> Signup and view all the answers

    Who advocated for cannabis use in migraine in the early 19th century?

    <p>William O’Shaughnessy</p> Signup and view all the answers

    Which factor derailed the medicinal use of cannabis in the United States?

    <p>Political propaganda</p> Signup and view all the answers

    Which government agency approved synthetic versions of Δ9-THC for medicinal purposes?

    <p>Federal Drug Administration</p> Signup and view all the answers

    What is the function of the dendrites in a neuron?

    <p>Receivers of information from other neurons.</p> Signup and view all the answers

    What is the purpose of the soma in a neuron?

    <p>Core of neuron function/energy/life.</p> Signup and view all the answers

    What is the role of the axon in a neuron?

    <p>Carrier of electrical information from one end of neuron to the other.</p> Signup and view all the answers

    What is the process called that moves proteins and other matter along microtubule tracks in a neuron?

    <p>Axoplasmic transport.</p> Signup and view all the answers

    What attaches to the 'to be transported' retrograde item and moves it up the microtubules?

    <p>Dynein.</p> Signup and view all the answers

    What is the primary component of the neuron membrane?

    <p>Phospholipid bilayer.</p> Signup and view all the answers

    What is the typical membrane potential of a neuron at rest?

    <p>-70 mV</p> Signup and view all the answers

    What are the key ions involved in the membrane potential of a neuron at rest?

    <p>Proteins (A-), Sodium (Na+), Chloride (Cl-), Potassium (K+), Calcium (Ca2+)</p> Signup and view all the answers

    What is the primary reason for the negative charge inside the neuron at rest?

    <p>Negatively charged proteins (A-)</p> Signup and view all the answers

    What is the function of the sodium-potassium pump?

    <p>To maintain the balance of Na+ outside of the neuron</p> Signup and view all the answers

    What are the two forces that surround a neuron?

    <p>Diffusion and electrostatic pressure</p> Signup and view all the answers

    What is the threshold voltage for an action potential to occur?

    <p>-55 mV</p> Signup and view all the answers

    What are the three primary cannabis species?

    <p>Cannabis sativa, Cannabis indica, and Cannabis ruderalis</p> Signup and view all the answers

    What is the psychoactive cannabinoid found in marijuana?

    <p>delta-9-tetrahydrocannabinol (Δ9-THC)</p> Signup and view all the answers

    What is the non-psychoactive cannabinoid found in marijuana?

    <p>cannabidiol (CBD)</p> Signup and view all the answers

    How many distinct compounds are found in the leaves and flowering tops of cannabis plants?

    <p>at least 489</p> Signup and view all the answers

    Who grew cannabis on his plantation for about 30 years?

    <p>George Washington</p> Signup and view all the answers

    What did George Washington cultivate cannabis for?

    <p>to increase the potency of his crop</p> Signup and view all the answers

    What was the main ingredient of opium called?

    <p>morphine</p> Signup and view all the answers

    Who developed a method for refining the active ingredients of coca leaves?

    <p>Albert Niemann</p> Signup and view all the answers

    What was the birth of Coca-Cola originally called?

    <p>French Coca Wine</p> Signup and view all the answers

    Who replaced alcohol with soda water in the French Coca Wine?

    <p>John Pemberton</p> Signup and view all the answers

    What substance was removed from both 'Vin Mariani' and Coca-Cola due to health issues?

    <p>cocaine</p> Signup and view all the answers

    Who said the quote: 'Why with the time do I not glance aside To new-found methods, and to compounds strange. Why write I still all one, ever the same, And keep invention in a noted weed...'

    <p>William Shakespeare</p> Signup and view all the answers

    What is the purpose of the myelin sheath?

    <p>The myelin sheath protects the neuron and allows for faster conduction of the action potential.</p> Signup and view all the answers

    What is the significance of the Nodes of Ranvier?

    <p>The Nodes of Ranvier are the only places where ions can be exchanged, allowing for the retriggering of the action potential and faster conduction in myelinated neurons.</p> Signup and view all the answers

    What is the function of neurotransmitters in the synaptic cleft?

    <p>Neurotransmitters are released from the pre-synaptic neuron and bind to specific receptors on the post-synaptic neuron, facilitating communication between neurons.</p> Signup and view all the answers

    What happens when the action potential reaches the terminal button?

    <p>Ca2+ channels open, leading to an influx of Ca2+ ions. This causes fusion of synaptic vesicles with the membrane and the release of neurotransmitters into the synaptic cleft.</p> Signup and view all the answers

    What is the role of drugs in ancient medicine?

    <p>Ancient drugs were used for rituals, medicinal purposes, improved capacity/performance, and recreation. They were typically of plant origin and their discovery was based on trial and error over time.</p> Signup and view all the answers

    What is the main function of a neuron?

    <p>The main function of a neuron is to serve as an effective communication relay apparatus, transferring information from one end to another and setting up a transfer to the next neuron.</p> Signup and view all the answers

    More Quizzes Like This

    Neural Membrane Ion Channels Quiz
    15 questions

    Neural Membrane Ion Channels Quiz

    WholesomeBalance avatar
    WholesomeBalance
    Compuerta de activación en el canal de sodio
    18 questions

    Compuerta de activación en el canal de sodio

    UndamagedBay avatar
    UndamagedBay
    Neuron Structure, Resting Membrane Potential and Action Potential Quiz
    29 questions

    Action Potential Quiz: Test Your Knowledge of Neuron Structure

    StunningSpessartine avatar
    StunningSpessartine
    Neuron Structure and Action Potential
    63 questions

    Neuron Structure and Action Potential

    VersatileCopernicium avatar
    VersatileCopernicium
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser