Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 41, Problem 2TYU
Summary Introduction
Introduction: Neurons are the basic unit of the nervous system that transmits the information. A neuron is the largest cell in the body consisting of the cell body, axon, dendrites, and terminal branches. Nerve impulses that are identified as stimuli are received and then transmitted forward to the CNS and then from CNS to the effectors by the neurons. The axon is covered by a layer of cells called myelin sheath, which helps in the improvement in signal transduction.
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Part 2- The Function of the Nervous System Use the information in
your lecture slides and handouts to answer the following questions
about the function of the nervous system
(A) Label the parts of the neuron indicated below
(B) Indicate using an arrow the direction an electrical impulse would move
during synaptic transmission
Тext
(the inner part)
(the outer part)
neuron (cell body)
(C) In the space provided, write the letter of the description that best matches
the term or phrase.
Neuron anatomy model - a spinal multipolar neuron
• Dendrites
●
Terminal ends of presynaptic neurons
• Some(cell body)
● Nucleus and nucleolus
Nissl (bodies) also called chromatophilic substances
0
• Neurofibrils
● Mitochondria
Axolemma
● Endoneurium
●
Axon
Myelin with nodes of Ranvier (neurofibril nodes)
In temporal summation..
Select one:
O A. IPSPS, but not EPSPS, are combined.
O B. The postsynaptic cell's potential is a combination of two EPSPS arriving at a synapse in
rapid succession.
O C. Two synapses on different regions of a cell are stimulated at the same time.
O D. A synapse is stimulated a second time after the effect of a first stimulus at the synapse
has been terminated.
O E. The size of an action potential depends on the size of the stimulus.
Chapter 41 Solutions
Biology (MindTap Course List)
Ch. 41.1 - Describe the processes involved in neural...Ch. 41.1 - Prob. 1CCh. 41.1 - Prob. 2CCh. 41.2 - Draw and label a typical neuron and give the...Ch. 41.2 - Prob. 3LOCh. 41.2 - Prob. 1CCh. 41.2 - Prob. 2CCh. 41.2 - Prob. 3CCh. 41.3 - Prob. 4LOCh. 41.3 - Prob. 5LO
Ch. 41.3 - Prob. 6LOCh. 41.3 - Prob. 1CCh. 41.3 - Prob. 2CCh. 41.3 - Prob. 3CCh. 41.3 - Prob. 4CCh. 41.4 - Prob. 7LOCh. 41.4 - Prob. 8LOCh. 41.4 - Prob. 9LOCh. 41.4 - Prob. 1CCh. 41.4 - Prob. 2CCh. 41.4 - How are EPSPs produced? IPSPs?Ch. 41.5 - Prob. 10LOCh. 41.5 - Prob. 1CCh. 41.5 - Prob. 2CCh. 41.5 - Prob. 3CCh. 41.6 - Prob. 11LOCh. 41.6 - Prob. 1CCh. 41 - Test Your Understanding Know and Comprehend 1....Ch. 41 - Prob. 2TYUCh. 41 - Test Your Understanding Know and Comprehend 3....Ch. 41 - Saltatory conduction (a) requires more energy than...Ch. 41 - Receptors for serotonin and many other...Ch. 41 - A presynaptic neuron in the cerebrum transmits...Ch. 41 - VISUALIZE Describe the action taking place at each...Ch. 41 - Prob. 8TYUCh. 41 - Prob. 9TYUCh. 41 - Prob. 10TYUCh. 41 - Prob. 11TYUCh. 41 - Prob. 12TYUCh. 41 - Prob. 13TYU
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- Test Your Understanding 8. VISUALIZE Label the diagram of the human brain.arrow_forwardThe membrane potential labeled (0) is due to which of the following (when compared to (3) potential. (A) voltage-gated Na+ channels (B) voltage-gated K+ channels (C) voltage-gated slow Ca++ channels (D) voltage-gated fast Ca++ channels (E) voltage-gated transient Ca++ channels (F) funny channelsarrow_forwardMetaNeuron Lesson 4 1. Action Potential Threshold. Vary the amplitude of "Stimulus 1". What effect does this have on the cell response (Figure 7)? What is the threshold stimulus amplitude (in uA) for initiating an action potential? The threshold stimulus is best measured by adjusting the stimulus amplitude in 0.1 µA increments until it is just large enough to initiate an action potential. Click on the "Stimulus 1 Amplitude" gray button and move the mouse while holding down the ctrl key. 2. Action Potentials and the Na+ equilibrium potential. Set "Stimulus 1 Amplitude" to 150 μA. The stimulus will evoke an action potential. Vary the "Na+ equilibrium potential". What effect does this have on the action potential? Why? 3. Action potentials and gK max. Using a "Stimulus 1 Amplitude" of 150 μA and a "Na+ equilibrium potential" of 50 mV, vary "gK max". What effect does this have on the time to action potential initiation and the width of the action potential? Why? 4. Na+ channels and Action…arrow_forward
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