Anatomy & Physiology
5th Edition
ISBN: 9780321861580
Author: Marieb, Elaine N.
Publisher: Pearson College Div
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Textbook Question
Chapter 11, Problem 14RQ
(a) Describe the composition and function of the cell body.
(b) How are axons and dendrites alike? In what ways (structurally and functionally) do they differ?
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Check out a sample textbook solutionStudents have asked these similar questions
The approximate protein:lipid ratio in the plasma membrane of a myelin cell is:
a) 1:10
b) 3:1
c) 1:1
d) 1:4
a) How does E allow faster transmission of signals?
b) What would happen if G has a lack of Calcium?
c) Most neurons have the style of junction (chemical) shown in the diagram, rather than gap (electrical) junctions. Why does this make sense?
Neurons typically receive information at structures called
Question 1 options:
A)
Myelin
B)
Dendrites
C)
Neuroglia
D)
Axons
E)
Axon hillocks
Chapter 11 Solutions
Anatomy & Physiology
Ch. 11 - What is meant by integration, and does it...Ch. 11 - Which subdivision of the PNS is involved in (a)...Ch. 11 - Which type of neuroglia controls the extracellular...Ch. 11 - Which two types of neuroglia form insulating...Ch. 11 - MAKING CONNECTIONS Which part of the neuron is its...Ch. 11 - How does a nucleus within the brain differ from a...Ch. 11 - How is a myelin sheath formed in the CNS, and what...Ch. 11 - Which structural and functional type of neuron is...Ch. 11 - For an open channel, what factors determine in...Ch. 11 - For which cation is there the greatest amount of...
Ch. 11 - Which is bigger, a graded potential or an action...Ch. 11 - An action potential does not get smaller as it...Ch. 11 - Why does a myelinated axon conduct action...Ch. 11 - If an axon receives two stimuli close together in...Ch. 11 - What structure joins two neurons at an electrical...Ch. 11 - Events at a chemical synapse usually involve...Ch. 11 - Which ions flow through chemically gated channels...Ch. 11 - Prob. 18CYUCh. 11 - Prob. 19CYUCh. 11 - Why is cyclic AMP called a second messenger?Ch. 11 - Which types of neural circuits would give a...Ch. 11 - Prob. 22CYUCh. 11 - What pattern of neural processing occurs when we...Ch. 11 - Which of the following structures is not part of...Ch. 11 - Match the names of the supporting cells found in...Ch. 11 - Prob. 3RQCh. 11 - Assume that an EPSP is being generated on the...Ch. 11 - The velocity of nerve impulse conduction is...Ch. 11 - Chemical synapses are characterized by all of the...Ch. 11 - Biogenic amine neurotransmitters include all but...Ch. 11 - Prob. 8RQCh. 11 - Inhibition of acetylcholinesterase by poisoning...Ch. 11 - Prob. 10RQCh. 11 - An IPSP is inhibitory because (a) it...Ch. 11 - Identify the neuronal circuits described by...Ch. 11 - Explain both the anatomical and functional...Ch. 11 - (a) Describe the composition and function of the...Ch. 11 - (a) What is myelin? (b) How does the myelination...Ch. 11 - (a) Contrast unipolar, bipolar, and multipolar...Ch. 11 - What is the polarized membrane state? How is it...Ch. 11 - Describe the events that must occur to generate an...Ch. 11 - Prob. 19RQCh. 11 - (a) Explain the difference between an EPSP and an...Ch. 11 - Since at any moment a neuron is likely to have...Ch. 11 - The effects of neurotransmitter binding are very...Ch. 11 - Prob. 23RQCh. 11 - Prob. 24RQCh. 11 - Elaine Sawyer, 35, was on her way to the local...Ch. 11 - Elaine Sawyer, 35, was on her way to the local...Ch. 11 - Elaine Sawyer, 35, was on her way to the local...Ch. 11 - Elaine Sawyer, 35, was on her way to the local...Ch. 11 - Elaine Sawyer, 35, was on her way to the local...
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- When a neuron receives signals from other neurons, the signals arrive at the axon hillock in the form of ________. A) graded potential changes B) action potentials C) calcium ions D) ATP E) RNAarrow_forwardWhat do we call all the other cells (you can see their nuclei, the small dark dots, in the image above), which surround the neuron?arrow_forwardIn nervous system, electrical signals originating within one cell can diffuse into a neighbouring cell as chemical signals through......arrow_forward
- With respect to the cell body of a neuron, which of the following statements is false? a. Aggregates of Golgi apparatus and lysosomes form darkstaining Nissl bodies within it. b. Reflecting its function of protein synthesis, the cell body contains a high density of ribosomes, rough endoplasmic reticulum, and Golgi apparatus. c. Within its cytoplasm are bundles of intermediate filaments that come together to form neurofibrils. d. The cell body has high metabolic demands, and thus has large numbers of mitochondria.arrow_forwardWhere are neurotransmitter receptors located?(A) the nuclear membrane(B) the nodes of Ranvier(C) the postsynaptic membrane(D) synaptic vesicle membranesarrow_forwardWhich statement is true regarding the nervous system? a) Damaged myelin on an axon has no effect with its ability to transmit an action potential b) Depolarization is the reduction of the membrane potential; going from negative to a more positive charge c) Neuroglia cells are only responsible for providing immunity to the nervous cells d) Neurons can communicate with other cells without the use of neurotransmittersarrow_forward
- When a neuron is polarized,. a) both positive and negative ions are concentrated inside the neural membrane b) positive ions are concentrated outside the neural membrane while negative ions are concentrated inside the membrane negative ions are concentrated outside the neural membrane while positive ions are concentrated inside the membrane d) both positive and negative ions are concentrated outside the neural membranearrow_forwardFinally, what will be the effect on the membrane potential if K+ loan move out of the cell?a) K+ will bring the membrane potential to 0 (neutral) b) The membrane potential won't be significantly affected (non-polarizing) c) K+ leaving will make the inside of the cell more negative (hyperpolarizing) d) K+ will make the inside of the cell more positive (depolarizing)arrow_forwardWhich factors in the establishment of the membrane potential are considered in the Nernst equation? (i) Coulomb force; (ii) Ion concentration; (iii) Length of the axon; (iv) Number of dendrites; (v) Permeability of the cell membrane. Select one: a. (i), (iii), (iv) b. (ii), (iii) c. (ii), (iv), (v) d. (i), (ii)arrow_forward
- 2) myelin sheaths are axons located within the central nervous system are formed by which of the following? a) oligodendrocytes b) microglia c) Schwann cells d) Astrocytesarrow_forwardplease answer 18,19,20,arrow_forwardwhat is the role of (1) electrochemical gradient created by ions, (2) permeability of the membrane proteins to such ions, (3) strength of stimulus, and (4) duration of the refractory period in the generation and propagation of action potential.arrow_forward
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