A neurotransmitter called "GABA" decreases the rate of action potential generation in neurons, but the effect can be overridden by excitatory neurotransmitters. Alcohol binds to the GABA receptor and has the same effect. Alcohol must Select one: a. Cause depolarization in neurons b. Cause hyperpolarization in neurons c. Block calcium entry at the axon terminus d. Block voltage-gated sodium channels

A neurotransmitter called "GABA" decreases the rate of action potential generation in neurons, but the effect can be overridden by excitatory neurotransmitters. Alcohol binds to the GABA receptor and has the same effect. Alcohol must Select one: a. Cause depolarization in neurons b. Cause hyperpolarization in neurons c. Block calcium entry at the axon terminus d. Block voltage-gated sodium channels

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter16: The Body's System

Section: Chapter Questions

Problem 24RQ: Neurons contain ________, which can receive signals from other neurons. a. axons b. mitochondria c....

See similar textbooks

Similar questions

Neurons contain ________, which can receive signals from other neurons. a. axons b. mitochondria c. dendrites d. Golgibodies
Glutamate's effect when it binds with protein receptors on the post synaptic membrane is to: a. Initiate movement of potassium ions out of the membrane b. Initiate movement of sodium ions into the membrane c. Initiate movement of sodium ions out of the membrane d. Initiate movement of potassium ions into the membrane GABA is an example of an inhibitory neurotransmitter. Drugs that increase the level of GABA are used to treat diseases such as epilepsy where the signal transmission needs to be impaired. The effect of the inhibitory neurotransmitter on the postsynaptic membrane is to: a. hyperpolarize the postsynaptic membrane b. decrease the threshold level c. depolarize the postsynaptic membrane d. maintain the resting potential Calcium is vital for bone growth, but it's also an important part of neural transmission. Calcium is required for the axon terminal to: a. Reuptake the neurotransmitter via exocytosis b. The neurotransmitter to be released by endocytosis c. The neurotransmitter…
There is a type of toxin found in the liver of the puffer fish that prevents the opening of voltage-gated Na+ channels in neurons. The effect of this toxin is to: Group of answer choices A. prevents the initiation of the action potential B. depolarizes the membrane potential and maintains it depolarized C. prolongs the return of the membrane potential to the resting level D. increases the duration of the action potential
During the action potential, which of the following activity is LIKELY to occur? Select one: a. Na+ channels open at the beginning of the action potential, and Na+ moves into the axon b. Na+ channel passages become smaller and get retracted at the beginning of the action potential c. Na+ channels are less active and static throughout the action potential process d. less Na+ is pumped to the axon when the action potential is triggered
Local anesthetics "block" the action potential and therefore do not allow "pain" information to proceed to the brain and spinal cord. In the presence of these molecules (local anesthetics) 'threshold' is essentially "ignored". The molecules most logically work by: 23. a. Decreasing the intracellular [potassium] b. Blocking the opening of the voltage-gated potassium channels c. Decreasing the extracellular [sodium] d. Blocking the opening of the voltage-gated sodium channels
Charge from depolarization along the axon reaches the axon terminal, but there is a lack of neurotransmitter release. Which of the following would cause this? Group of answer choices A. Lack of Na+ in the synaptic cleft B. Lack of Ca2+ in the synaptic cleft C. Reduced amount of K+ at the axon terminal D. Lack of voltage-gated sodium channels in the axon terminal
Which of the following is true about the conduction of action potentials? a. Thicker axons are faster because there is more surface area on thicker axons. b. Myelin speeds conduction because the glial cells add voltage gated Na+ channels to the neuron. c. Diffusion of Na+ ions between the Nodes of Ranvier happens faster than the wave of opening and closing membrane proteins can travel. d. Neurons that don’t have myelin sheaths undergo saltatory conduction e. Action potentials move slowly.
Organophosphate pesticides inhibit the action of acetylcholinesterase. What effect does this have in the cell? Select one: a. It prevents synthesis of ACh in the presynaptic terminal causing less neurotransmitter release b. It prevents breakdown of ACh in the synapse causing increased activity at the postsynaptic cell c. It prevents reuptake of ACh into the presynaptic terminal causing increased activity at the postsynaptic cell d. It prevents binding of ACh on the postsynaptic cell causing less activity e. It prevents reuptake of ACh into the presynaptic terminal causing less neurotransmitter synthesis.
Calcium is vital for bone growth, but it's also an important part of neural transmission. The role of calcium in neural transmission is that it enables the axon terminals to effectively Select one: a. secrete neurotransmitter into the synapse via exocytosis b. reabsorb neurotransmitter from the synapse via endocytosis after an action potential c. reabsorb neurotransmitter from the synapse via exocytosis after an action potential d. secrete neurotransmitter into the synapse via endocytosis
Which of the following is NOT an example of communication that happens from one neuron to another neuron? A. Endocrine signaling (ex. hormones secreted into the blood stream travel and bind to receptors on dstant cells). B. Retrograde neurotransmission (ex.the dendrite releases a neuroactive substance that binds to receptors on the axon terminal of a presynaptic neuron). C. Electrical communication via propagation of action potential from one node of ranvier to the next node of ranvier. D. Volume transmission (ex. neuropeptides diffuse away from the synapse and bind to receptors on adjacent cells) E. Electrical communication through gap junctions.
GABA is an example of an inhibitory neurotransmitter. Drugs that increase the level of GABA are used to treat diseases such as epilepsy where the signal transmission needs to be impaired. The effect of the inhibitory neurotransmitter on the postsynaptic membrane is to: Select one: a. decrease the threshold level b. hyperpolarize the postsynaptic membrane c. depolarize the postsynaptic membrane d. maintain the resting potential
which of the following is the best comparison of GABA and glutamate Select one: a. all of these are valid comparisons of glutamate and GABA b. too much GABA can cause excitotoxicity; too much glutamate can cause seizures c. post synaptic sites for glutamate are most likely on the dendrite ; post synaptic sites for GABA are most likely on the cell body d. glutamate acts on ionotropic receptors; GABA acts on metabotropic receptors e. they are both excitatory amino acid precursors ; GABA is a precursor to making glutamate