ANAT.+PHYSIO.1-LAB.MAN. >CUSTOM<
20th Edition
ISBN: 9781264303106
Author: VanPutte
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Textbook Question
Chapter 11, Problem 22RAC
Neurotransmitter substances are stored in vesicles located in specialized portions of the
- Neuron cell body.
- Axon.
- Dendrite.
- Postsynaptic membrane.
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Which of the following are the likely explanations for the failure of a postsynaptic neuron to trigger an action potential? Select all that apply.
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Chapter 11 Solutions
ANAT.+PHYSIO.1-LAB.MAN. >CUSTOM<
Ch. 11.1 - List and give examples of the general functions of...Ch. 11.2 - Name the components of the CNS and the PNS.Ch. 11.2 - What are the following: sensory receptor, nerve,...Ch. 11.2 - Based on the direction they transmit action...Ch. 11.2 - Based on the structures they supply, what are the...Ch. 11.2 - Where are the cell bodies of sensory, somatic...Ch. 11.2 - What are the subcategories of the ANS?Ch. 11.2 - Compare the general functions of the CNS and the...Ch. 11.3 - Describe and give the function of a neuron cell...Ch. 11.3 - What is the function of the trigger zone?
Ch. 11.3 - Prob. 11AYPCh. 11.3 - Describe the three types of neurons based on...Ch. 11.3 - Prob. 13AYPCh. 11.3 - What characteristic makes glial cells different...Ch. 11.3 - Which glial cells are found in the CNS? In the...Ch. 11.3 - Which type of glial cell Supports neurons and...Ch. 11.3 - Name the different kinds of glial cells that ore...Ch. 11.3 - Prob. 18AYPCh. 11.3 - How do myelinated axons differ from unmyelinated...Ch. 11.4 - What makes up gray matter and white matter?Ch. 11.4 - Prob. 21AYPCh. 11.5 - Describe the concentration differences for Na+ and...Ch. 11.5 - Prob. 23AYPCh. 11.5 - Describe leak ion channels and go ted ion...Ch. 11.5 - Define ligand, receptor, and receptor site.Ch. 11.5 - What kinds of stimuli cause gated ion channels to...Ch. 11.5 - Prob. 27AYPCh. 11.5 - Prob. 28AYPCh. 11.5 - Prob. 29AYPCh. 11.5 - What happens to cause depolarization and...Ch. 11.5 - Prob. 31AYPCh. 11.5 - Prob. 32AYPCh. 11.5 - How does on action potential differ from a local...Ch. 11.5 - Prob. 34AYPCh. 11.5 - Prob. 35AYPCh. 11.5 - Prob. 36AYPCh. 11.5 - Prob. 37AYPCh. 11.5 - Prob. 38AYPCh. 11.5 - What is action potential frequency? What two...Ch. 11.5 - Describe sub-threshold threshold, maximal,...Ch. 11.5 - Prob. 41AYPCh. 11.5 - What prevents on action potential from reversing...Ch. 11.5 - Prob. 43AYPCh. 11.5 - Prob. 44AYPCh. 11.5 - Prob. 45AYPCh. 11.6 - What are the components of a synapse? What is the...Ch. 11.6 - What is on electrical synapse? Describe its...Ch. 11.6 - Describe the release of neurotransmitter In a...Ch. 11.6 - Prob. 49AYPCh. 11.6 - Prob. 50AYPCh. 11.6 - Prob. 51AYPCh. 11.6 - Explain the production of EPSPs and IPSPs. Why are...Ch. 11.6 - Prob. 53AYPCh. 11.6 - Prob. 54AYPCh. 11.6 - Prob. 55AYPCh. 11.6 - Prob. 56AYPCh. 11.7 - Diagram a convergent pathway, a divergent pathway,...Ch. 11 - The part of the nervous system that controls...Ch. 11 - Motor neurons and interneurons are _______...Ch. 11 - Cells found in the choroid plexuses that secrete...Ch. 11 - Glial cells that are phagocytic within the central...Ch. 11 - Action potentials are conducted more rapidly In...Ch. 11 - Clusters of neuron cell bodies within the...Ch. 11 - Prob. 7RACCh. 11 - Prob. 8RACCh. 11 - Compared with the inside of the resting plasma...Ch. 11 - Prob. 10RACCh. 11 - Prob. 11RACCh. 11 - If the permeability of the plasma membrane to K+...Ch. 11 - Decreasing the extracellular concentration of K+...Ch. 11 - Prob. 14RACCh. 11 - Which of these statements about ion movement...Ch. 11 - Prob. 16RACCh. 11 - Graded potentials a. spread over the plasma...Ch. 11 - During the depolarization phase of an action...Ch. 11 - Prob. 19RACCh. 11 - Prob. 20RACCh. 11 - Prob. 21RACCh. 11 - Neurotransmitter substances are stored in vesicles...Ch. 11 - In a chemical synapse, Action potentials in the...Ch. 11 - An inhibitory presynaptic neuron can affect a...Ch. 11 - Summation Is caused by combining two or more...Ch. 11 - In convergent pathways. a. the response of the...Ch. 11 - A child eats a whole bottle of salt (NaCl)...Ch. 11 - Prob. 2CTCh. 11 - Prob. 3CTCh. 11 - Prob. 4CTCh. 11 - The speed of action potential propagation and...Ch. 11 - Prob. 6CTCh. 11 - Strychnine blocks receptor sites for inhibitory...Ch. 11 - Prob. 8CTCh. 11 - Prob. 9CTCh. 11 - Prob. 10CT
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- A neuron responds to adequate stimulation with _______, a type of self-propagating signal.arrow_forwardMatch each region of a neuron to the category of ion channels (ligand-gated ion channels, voltage-gated calcium channels, or voltage-gated sodium and potassium channels) found there: Axon: Axon terminal: Dendrite: Axon hillock:arrow_forwardExcitatory neurotransmitters open up some sodium ion channels in the postsynaptic dendrite. This allows some sodium ions (Na+) to enter the postsynaptic dendrite, making the membrane potential more positive and bringing it closer to the threshold potential. This increases the likelihood of an action potential. Inhibitory neurotransmitters open up ion channels in the postsynaptic membrane for positive potassium ions (K+) to flow out OR negative chloride ions (Cl-) to flow in. Whether potassium ions go out or chloride ions go in, the postsynaptic cell becomes more negative than the resting membrane potential (further from the threshold potential). This decreases the likelihood of an action potential. The effect of the inhibitory neurotransmitter on the postsynaptic membrane is to a. maintain the resting potential b. hyperpolarize the postsynaptic membrane c. depolarize the postsynaptic membrane d. decrease the threshold levelarrow_forward
- Which channel membrane protein is specifically important in the process of neurotransmitter release at the synapse? voltage-dependent (gated) chloride channels. voltage-dependent (gated) potassium channels. voltage-dependent (gated) sodium channels. O voltage-dependent (gated) calcium channels.arrow_forwardWhich type of gates are located in the dendrite membrane of the post-synaptic cell? Voltage-sensitive gates. Chemically-sensitive gates. A mix of chemically-sensitive, voltage-sensitive, and mechanically-sensitive gates. Mechanically-sensitive gates Both Chemically-sensitive and voltage-sensitive gates.arrow_forwardDuring excitatory synaptic transmission, the electrical signal carried along the axon of a presynaptic neuron causes the release of neurotransmitters into the synapse and its sub- sequent reception by receptors on the postsynaptic neurons. The activation of receptors on the postsynaptic neurons then triggers the generation of the new action potential in that neuron. Both chemical and electrical neuronal signals are mediated by the movement of ions across the neuronal membrane. Which of the following correctly describes the movement of ions across neuronal membranes as an action potential is conducted down the neuron? A B с D At rest, the internal side of the membrane has an overall positive charge, but as the ac- tion potential moves down the neuron, more ions flow out of the neuron to neutralize the membrane. At rest, the internal side of the membrane has an overall positive charge, but as the ac- tion potential moves down the neuron, more ions flow into the neuron making the membrane…arrow_forward
- Which of the following would occur if a neuron was experimentally stimulated simultaneously at both ends? The action potentials would pass in the middle and travel to the opposite ends The action potentials would stop as they meet in the middle. The stronger action potential would override the weaker action potential. Summation would occur when the action potentials meet in the middle, resulting in a larger action potential.arrow_forwardWith the help of figure 12.6 on page 395 and the definitions below, label the following diagram of a typical neuron. axon - the long extension of a neuron that carries nerve impulses away from myelin sheath - the fatty substance that surrounds and the body of the cell. axon terminals - the hair-like ends of node of Ranvier - one of the many gaps in the myelin the axon cell body - the cell body of the neuron; it contains the nucleus and other cell organelles dendrites - the branching structure of Schwann's cells - cells that produce myelin - they are a neuron that receives messages |(attached to the cell body) 1. protects some nerve fibers sheath – impulses jump from node to node resulting in faster transmission nucleus - the organelle in the cell body of the neuron that contains the genetic material of the cell located within the myelin sheath. ©EnchantedLearning.com Place an arrow along the diagram to indicate the direction that impulses travel long the neuron. 2.arrow_forwardWhat terms denotes a sudden change (depolarization and repolarization) in the electrical properties of the neuron membrane? Action potential Synaptic transmission Event-related potential Postsynaptic potential ------------------------------------ You step on a brick, ouch. What type of nerve will bring the signal from your foot to your brain? Somatic afferent Somatic efferent automatic afferent automatic afferent ---------------------------------------------- A given neurotransmitter is inhibitory. What might its receptors do? Allow positive ions to enter the cell Allow negative ions to enter the cell Allow positive ions to leave the cell B and Carrow_forward
- The membrane potential caused by differences in ions across the plasma membrane of an electrically excitable cell (when not stimulated) is called: action potential resting membrane potential graded potential local potentialarrow_forwardWhich of the following would occur if you were measuring the voltage of a motor neuron that was stimulated by an inhibitory pathway? The voltage would decrease to +55 mV The voltage would increase to +65 mV An EPSP would be present at the membrane An IPSP would be present at the membranearrow_forwardWhich of the following describes temporal summation? Two pre-synaptic cells send alternating signals to depolarize and then hyperpolarize. Two pre-synaptic cells send simultaneous signals to hyperpolarize. One pre-synaptic cell sends a signal to depolarize and another cell simultaneously sends a signal to hyperpolarize. One presynaptic cell sends a repeated signal to depolarize. Two pre-synaptic cells send simultaneous signals to depolarize.arrow_forward
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