Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Textbook Question
Chapter 32, Problem 6SQ
What chemicals is released by the axon terminals of a motor neuron at a neuromuscular junction?
- a. ACh
- b. serotonin
- c. dopamine
- d. epinephrine
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Chapter 32 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 32 - Prob. 1DAACh. 32 - Prob. 2DAACh. 32 - Prob. 3DAACh. 32 - Prob. 4DAACh. 32 - ___ relay messages from the brain and .spinal cord...Ch. 32 - When a neuron is at rest, ________ . a. it is at...Ch. 32 - An action potential begins when ___ . a. a neuron...Ch. 32 - Most human axons have a myelin sheath that ___ ....Ch. 32 - Neurotransmitters are released. by ___ . a. axon...Ch. 32 - What chemicals is released by the axon terminals...
Ch. 32 - Which neurotransmitter is important in...Ch. 32 - Skeletal muscles are controlled by ______ . a....Ch. 32 - When you sit quietly on the couch and read, output...Ch. 32 - In the central nervous system, all synapses are in...Ch. 32 - The brain and spinal cord develop from the...Ch. 32 - An injury ___ in the spinal cord can lead to...Ch. 32 - ___ deep in the brain plays a role in emotion. a....Ch. 32 - Commands to move your right arm start in the...Ch. 32 - Prob. 15SQCh. 32 - Prob. 1CTCh. 32 - Most tumors that originate in the brain are not...Ch. 32 - Hansen's disease, also known as leprosy, arises...
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- Both potassium and sodium channels located along the nerve membrane are voltage-gated. This means that they respond to the changes in the voltage by opening and closing the gates to allow the ions to flow in or out of the membrane. When the threshold level is reached and depolarization occurs, how come only the sodium ions begin to rush in? a. The threshold levels for both sodium and potassium channels are equal, but sodium channels are slower to open. b. The threshold levels for both sodium and potassium channels are equal, but potassium channels take longer to open. c. The threshold level for the potassium channels is lower than the sodium channels. d. The threshold level for the potassium channels is higher than the sodium channels.arrow_forwardWhich receptor is an adrenergic receptor that results in broncodialation when activated by agonist? a. M2 b. Beta 1 c. Beta 2 d. Alpha 1arrow_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_forward
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