1What are the biological components of cognition?
- He created a dye from silver nitrate that turned cell bodies black against a yellow background.
- Guide nervous system development, provide scaffolding for neurons, repair damage, control nutrient flow, and provide electrical insulation.
- Cells facilitating cognition, structure and function of neurons, and neuron communication.
- Elementary neurons project to higher-order neurons to represent complex information.
2Who discovered the neuron?
- Elementary neurons project to higher-order neurons to represent complex information.
- Camillo Golgi and Santiago Ramón y Cajal.
- It coordinates information processing and keeps the cell alive.
- Unipolar, multipolar, pyramidal, bipolar, and Purkinje neurons.
3What did Camillo Golgi contribute to neuroscience?
- He created a dye from silver nitrate that turned cell bodies black against a yellow background.
- The ability of synapses to strengthen or weaken over time.
- It coordinates information processing and keeps the cell alive.
- It is involved in muscle action and memory.
4What did Santiago Ramón y Cajal accomplish?
- The process where neurotransmitters are absorbed by the presynaptic neuron.
- He identified and categorized the first neurons.
- They act as the body's command and communication system.
- Elementary neurons project to higher-order neurons to represent complex information.
5What type of cells support neurons?
- Glial cells (neuroglia).
- The increase in positive charge inside the neuron due to sodium ions entering.
- The time after an action potential when another action potential cannot be initiated.
- Elementary neurons project to higher-order neurons to represent complex information.
6What are the functions of glial cells?
- A cell in the nervous system that communicates with other neurons to process information.
- They receive information from other neurons and relay it to the cell body.
- Guide nervous system development, provide scaffolding for neurons, repair damage, control nutrient flow, and provide electrical insulation.
- The junction between the axon of one neuron and the dendrites or cell body of another neuron.
7What is a neuron?
- They transmit chemical signals across the synapse to the next neuron.
- The process where neurotransmitters are absorbed by the presynaptic neuron.
- A cell in the nervous system that communicates with other neurons to process information.
- The increase in positive charge inside the neuron due to sodium ions entering.
8What is the function of a neuron's cell body?
- It coordinates information processing and keeps the cell alive.
- The junction between the axon of one neuron and the dendrites or cell body of another neuron.
- The process where neurotransmitters are absorbed by the presynaptic neuron.
- Guide nervous system development, provide scaffolding for neurons, repair damage, control nutrient flow, and provide electrical insulation.
9What do dendrites do?
- The time after an action potential when another action potential cannot be initiated.
- The process where neurotransmitters are absorbed by the presynaptic neuron.
- They receive information from other neurons and relay it to the cell body.
- Guide nervous system development, provide scaffolding for neurons, repair damage, control nutrient flow, and provide electrical insulation.
10What is the function of an axon?
- It transmits information to other neurons, muscles, or glands.
- The process where neurotransmitters are absorbed by the presynaptic neuron.
- The difference in electrical charge between the inside and outside of a neuron.
- An electric signal conducted along an axon when the threshold is reached (-55 mV).
11What is the myelin sheath?
- The process of the neuron returning to its resting state.
- The time after an action potential when another action potential cannot be initiated.
- An insulating layer of fatty material around some axons.
- The junction between the axon of one neuron and the dendrites or cell body of another neuron.
12What are Nodes of Ranvier?
- Gaps in the myelin sheath that increase efficiency of signal transmission.
- Elementary neurons project to higher-order neurons to represent complex information.
- It is involved in muscle action and memory.
- They transmit chemical signals across the synapse to the next neuron.
13What is a synapse?
- The ability of synapses to strengthen or weaken over time.
- They transmit chemical signals across the synapse to the next neuron.
- An electric signal conducted along an axon when the threshold is reached (-55 mV).
- The junction between the axon of one neuron and the dendrites or cell body of another neuron.
14What are the structural types of neurons?
- Gaps in the myelin sheath that increase efficiency of signal transmission.
- It is involved in muscle action and memory.
- An electric signal conducted along an axon when the threshold is reached (-55 mV).
- Unipolar, multipolar, pyramidal, bipolar, and Purkinje neurons.
15What are the functional types of neurons?
- Unipolar, multipolar, pyramidal, bipolar, and Purkinje neurons.
- Gaps in the myelin sheath that increase efficiency of signal transmission.
- An electric signal conducted along an axon when the threshold is reached (-55 mV).
- Sensory neurons, motor neurons, and interneurons.
16How many neurons does the human brain have?
- The state of a neuron at rest, with a charge of -70 millivolts.
- The increase in positive charge inside the neuron due to sodium ions entering.
- Each neuron has approximately 10,000 synapses.
- Approximately 86 billion.
17How many synapses does each neuron have?
- Approximately 86 billion.
- The time after an action potential when another action potential cannot be initiated.
- Each neuron has approximately 10,000 synapses.
- The increase in positive charge inside the neuron due to sodium ions entering.
18What is neural plasticity?
- The time after an action potential when another action potential cannot be initiated.
- The process where neurotransmitters are absorbed by the presynaptic neuron.
- The brain's ability to change and adapt through learning.
- It affects mood, sleep, and learning.
19What are the two main ways neurons communicate?
- Electrical signals (within the neuron) and chemical signals (between neurons).
- It decreases anxiety and tension.
- It affects mood, sleep, and learning.
- An insulating layer of fatty material around some axons.
20What is membrane potential?
- The brain's ability to change and adapt through learning.
- An insulating layer of fatty material around some axons.
- The difference in electrical charge between the inside and outside of a neuron.
- The time after an action potential when another action potential cannot be initiated.
21What is resting potential?
- The state of a neuron at rest, with a charge of -70 millivolts.
- The breakdown of neurotransmitters by enzymes in the synapse.
- The ability of synapses to strengthen or weaken over time.
- The time after an action potential when another action potential cannot be initiated.
22What is depolarization?
- The ability of synapses to strengthen or weaken over time.
- The increase in positive charge inside the neuron due to sodium ions entering.
- The state of a neuron at rest, with a charge of -70 millivolts.
- Guide nervous system development, provide scaffolding for neurons, repair damage, control nutrient flow, and provide electrical insulation.
23What is an action potential?
- An electric signal conducted along an axon when the threshold is reached (-55 mV).
- Guide nervous system development, provide scaffolding for neurons, repair damage, control nutrient flow, and provide electrical insulation.
- An insulating layer of fatty material around some axons.
- A cell in the nervous system that communicates with other neurons to process information.
24What is repolarization?
- The process of the neuron returning to its resting state.
- The brain's ability to change and adapt through learning.
- An insulating layer of fatty material around some axons.
- The junction between the axon of one neuron and the dendrites or cell body of another neuron.
25What is the refractory period?
- The brain's ability to change and adapt through learning.
- They transmit chemical signals across the synapse to the next neuron.
- The difference in electrical charge between the inside and outside of a neuron.
- The time after an action potential when another action potential cannot be initiated.
26What do neurotransmitters do?
- The process of the neuron returning to its resting state.
- The ability of synapses to strengthen or weaken over time.
- The process where neurotransmitters are absorbed by the presynaptic neuron.
- They transmit chemical signals across the synapse to the next neuron.
27What is reuptake?
- The ability of synapses to strengthen or weaken over time.
- Elementary neurons project to higher-order neurons to represent complex information.
- It affects mood, sleep, and learning.
- The process where neurotransmitters are absorbed by the presynaptic neuron.
28What is deactivation of neurotransmitters?
- They act as the body's command and communication system.
- The ability of synapses to strengthen or weaken over time.
- Elementary neurons project to higher-order neurons to represent complex information.
- The breakdown of neurotransmitters by enzymes in the synapse.
29What is synaptic plasticity?
- It coordinates information processing and keeps the cell alive.
- An insulating layer of fatty material around some axons.
- He created a dye from silver nitrate that turned cell bodies black against a yellow background.
- The ability of synapses to strengthen or weaken over time.
30What is the role of acetylcholine?
- The brain's ability to change and adapt through learning.
- It affects mood, sleep, and learning.
- The junction between the axon of one neuron and the dendrites or cell body of another neuron.
- It is involved in muscle action and memory.
31What is the function of dopamine?
- Guide nervous system development, provide scaffolding for neurons, repair damage, control nutrient flow, and provide electrical insulation.
- It affects mood, sleep, and learning.
- Mood and sleep.
- The process where neurotransmitters are absorbed by the presynaptic neuron.
32What does serotonin regulate?
- Guide nervous system development, provide scaffolding for neurons, repair damage, control nutrient flow, and provide electrical insulation.
- It decreases anxiety and tension.
- Mood and sleep.
- The junction between the axon of one neuron and the dendrites or cell body of another neuron.
33What is the effect of GABA?
- It decreases anxiety and tension.
- It affects mood, sleep, and learning.
- The brain's ability to change and adapt through learning.
- It is involved in muscle action and memory.
34How do hierarchical networks work?
- The junction between the axon of one neuron and the dendrites or cell body of another neuron.
- Elementary neurons project to higher-order neurons to represent complex information.
- They receive information from other neurons and relay it to the cell body.
- It coordinates information processing and keeps the cell alive.
35What is the main role of neurons?
- They transmit chemical signals across the synapse to the next neuron.
- Guide nervous system development, provide scaffolding for neurons, repair damage, control nutrient flow, and provide electrical insulation.
- They act as the body's command and communication system.
- The breakdown of neurotransmitters by enzymes in the synapse.