LAB MANUAL:MCKINLEY'S ANATOMY & PHYSIOL
2nd Edition
ISBN: 9781260484991
Author: McKinley
Publisher: MCG
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Chapter 12, Problem 4CAL
Summary Introduction
Introduction:
Neuron is a basic functional unit of the nervous system and is a specialized cell of the nervous system that makes a complex network for transmission of messages. A neuron is made up of a cell body, nerve fibers: dendrites and an axon.
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A neuron may receive signals from thousands of synaptic terminals. What determines whether the receiving neuron will respond by transmitting a signal?
a. the concentration of transmitter inside the receiving neuron
b. the summation of excitatory and inhibitory signals received
c. the number of glial cells contact the receiving neuron
Neurotransmitters are released by_____ . a. axon terminals c. dendrites b. a neuron cell body d. glial cells
The difference between the channels along the axon and the channels in the axon
terminal is that?
a) axon channels are voltage-gated sodium channels and axon terminal channels are
voltage-gated calcium channels
b) there is no difference
c) axon channels are voltage-gated sodium channels and axon terminal channels are ligand-
gated sodium channels
Chapter 12 Solutions
LAB MANUAL:MCKINLEY'S ANATOMY & PHYSIOL
Ch. 12.1 - Prob. 1WDYLCh. 12.1 - What are the two primary functional divisions of...Ch. 12.2 - Prob. 3WDYLCh. 12.2 - Prob. 4WDYLCh. 12.2 - Prob. 5WDYLCh. 12.2 - Prob. 6WDYLCh. 12.2 - Prob. 7WDYLCh. 12.2 - What are the three connective tissue wrappings in...Ch. 12.3 - Prob. 9WDYLCh. 12.4 - If a person has a brain tumor, is it more likely...
Ch. 12.4 - Prob. 11WDYLCh. 12.4 - Prob. 12WDYLCh. 12.4 - Prob. 13WDYLCh. 12.5 - Prob. 14WDYLCh. 12.5 - Prob. 15WDYLCh. 12.6 - Prob. 16WDYLCh. 12.6 - Prob. 17WDYLCh. 12.7 - Prob. 18WDYLCh. 12.7 - Prob. 19WDYLCh. 12.7 - Prob. 20WDYLCh. 12.8 - How are EPSP and IPSP graded potentials...Ch. 12.8 - Prob. 22WDYLCh. 12.8 - How does depolarization and repolarization occur...Ch. 12.8 - Prob. 24WDYLCh. 12.8 - Prob. 25WDYLCh. 12.9 - Prob. 26WDYLCh. 12.9 - Prob. 27WDYLCh. 12.9 - Prob. 28WDYLCh. 12.9 - Prob. 29WDYLCh. 12.10 - Prob. 30WDYLCh. 12.10 - Prob. 31WDYLCh. 12.11 - Prob. 32WDYLCh. 12.11 - Prob. 33WDYLCh. 12 - _____ 1. The cell body of a neuron does all of the...Ch. 12 - Prob. 2DYKBCh. 12 - Prob. 3DYKBCh. 12 - Prob. 4DYKBCh. 12 - Prob. 5DYKBCh. 12 - Prob. 6DYKBCh. 12 - _____ 7. An action potential is generated when...Ch. 12 - Prob. 8DYKBCh. 12 - Prob. 9DYKBCh. 12 - Prob. 10DYKBCh. 12 - What are the four structural types of neurons? How...Ch. 12 - Prob. 12DYKBCh. 12 - How does myelination differ between the CNS and...Ch. 12 - Describe the procedure by which a PNS axon may...Ch. 12 - Prob. 15DYKBCh. 12 - Prob. 16DYKBCh. 12 - Explain summation of EPSPs and IPSPs and the...Ch. 12 - Graph and explain the events associated with an...Ch. 12 - Prob. 19DYKBCh. 12 - Prob. 20DYKBCh. 12 - Prob. 1CALCh. 12 - Prob. 2CALCh. 12 - Prob. 3CALCh. 12 - Prob. 4CALCh. 12 - Sarah wants to call her new friend Julie and needs...Ch. 12 - Over a period of 6 to 9 months, Marianne began to...Ch. 12 - Prob. 2CSLCh. 12 - Prob. 3CSL
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- Which bulb shaped structures found at the end of neurons form connections with the dendrites and somas of other neurons and allow information to pass from one neuron to another? A. Myelin sheaths B. Ion channels C. Axon terminals D. Dendrite arcsarrow_forwardWhat determines the effect of neurotransmitter release on the post-synaptic neurons? a. the size of the action potential. b. the post-synaptic receptors c. the neurotransmitter contained in the synaptic vesicles. d. the concentration of calcium ions reached in presynaptic terminals. e. the size of the synaptic vesicles.arrow_forwardNeurons contain ________, which can receive signals from other neurons. a. axons b. mitochondria c. dendrites d. Golgibodiesarrow_forward
- Suppose you want to cause the presynaptic terminal of an axon to release its transmitter. How could you do so without an action potential?A. Decrease the temperature at the synapse.B. Use an electrode to produce IPSPs in the postsynaptic neuron.C. Inject water into the presynaptic terminal.D. Inject calcium into the presynaptic terminal.arrow_forwardAn elderly neighbor was diagnosed with an astrocytoma tumor in the brain. This cancer affects what types of cell? a. ependymal cells b. microglia c. astrocytes d. satellite cellsarrow_forwardWhere are neurotransmitter receptors located?(A) the nuclear membrane(B) the nodes of Ranvier(C) the postsynaptic membrane(D) synaptic vesicle membranesarrow_forward
- Galen performed vivisection, or live experimentation, on animals to learn about the nervous system. What did Galen discover with his squealing pig experiment? A) Galen correctly identified that peripheral nerves could control bodily function B) Galen correctly identified the division between the central and peripheral nervous systems C) Galen demonstrated that tendons, ligaments and nerves were separate entities D) Galen demonstated that transection of individual nerves had little functional consequence.arrow_forwardConsider the image. The neuron labeled number _____ in the figure is a motor neuron; its function is _____. A)2; stimulating muscles or glands B)3; stimulating muscles or glands C)1; connecting different types of neurons D)3; connecting different types of neuronsarrow_forwardMost human axons have a myelin sheath that_____ . a. prevents action potentials from moving backward b. increases the speed of action potential conduction c. consists of specialized interneurons d. increases the size of action potentialsarrow_forward
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