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Questions and Answers
The Central Nervous System (CNS) consists of the brain and heart.
The Central Nervous System (CNS) consists of the brain and heart.
False
The Peripheral Nervous System (PNS) is divided into three subsystems.
The Peripheral Nervous System (PNS) is divided into three subsystems.
False
Interneurons transmit information from sensory receptors to the CNS.
Interneurons transmit information from sensory receptors to the CNS.
False
Neurotransmitters are released into the synapse and trigger an action potential.
Neurotransmitters are released into the synapse and trigger an action potential.
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The blood-brain barrier filters the blood supply to the spinal cord.
The blood-brain barrier filters the blood supply to the spinal cord.
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The Autonomic Nervous System (ANS) controls voluntary movements.
The Autonomic Nervous System (ANS) controls voluntary movements.
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Motor neurons transmit information from sensory receptors to the CNS.
Motor neurons transmit information from sensory receptors to the CNS.
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The nervous system is responsible for regulating body functions, such as heart rate and digestion.
The nervous system is responsible for regulating body functions, such as heart rate and digestion.
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Sensory neurons process and integrate information within the CNS.
Sensory neurons process and integrate information within the CNS.
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The nervous system is divided into three main parts: the Central Nervous System (CNS), the Peripheral Nervous System (PNS), and the Somatic Nervous System (SNS).
The nervous system is divided into three main parts: the Central Nervous System (CNS), the Peripheral Nervous System (PNS), and the Somatic Nervous System (SNS).
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Study Notes
Overview of the Nervous System
- The nervous system is a complex system that controls and coordinates the body's functions, interpreting and responding to stimuli.
- It consists of two main parts: the Central Nervous System (CNS) and the Peripheral Nervous System (PNS).
Central Nervous System (CNS)
- The CNS includes the brain and spinal cord.
- It integrates and processes information, controlling voluntary movements, sensations, and functions.
- The CNS is protected by the blood-brain barrier, a specialized barrier that filters the blood supply to the brain.
Peripheral Nervous System (PNS)
- The PNS consists of nerves that connect the CNS to the rest of the body.
- It is divided into two subsystems:
- Somatic Nervous System (SNS): controls voluntary movements, such as walking and talking.
- Autonomic Nervous System (ANS): controls involuntary functions, such as heart rate, digestion, and breathing.
Functions of the Nervous System
- Control and Coordination: integrates and processes information, controlling body functions.
- Communication: transmits and receives signals between different parts of the body.
- Sensation: interprets sensory information from the environment.
- Movement: controls voluntary movements, such as walking and talking.
- Regulation: regulates body functions, such as heart rate, blood pressure, and digestion.
Types of Neurons
- Sensory Neurons: transmit information from sensory receptors to the CNS.
- Motor Neurons: transmit information from the CNS to muscles and glands.
- Interneurons: process and integrate information within the CNS.
Neurotransmission
- Neurotransmitters: chemical messengers that transmit signals between neurons.
- Synapse: the gap between two neurons, where neurotransmitters are released and received.
- Action Potential: the electrical impulse that travels along a neuron, triggering neurotransmitter release.
Overview of the Nervous System
- Controls and coordinates body functions, interpreting and responding to stimuli.
Central Nervous System (CNS)
- Consists of the brain and spinal cord.
- Integrates and processes information, controlling voluntary movements, sensations, and functions.
- Protected by the blood-brain barrier, a specialized barrier that filters the blood supply to the brain.
Peripheral Nervous System (PNS)
- Consists of nerves connecting the CNS to the rest of the body.
- Divided into two subsystems: Somatic Nervous System (SNS) and Autonomic Nervous System (ANS).
- SNS controls voluntary movements, such as walking and talking.
- ANS controls involuntary functions, such as heart rate, digestion, and breathing.
Functions of the Nervous System
- Controls and coordinates body functions through integration and processing of information.
- Enables communication between different parts of the body.
- Interprets sensory information from the environment.
- Controls voluntary movements, such as walking and talking.
- Regulates body functions, such as heart rate, blood pressure, and digestion.
Types of Neurons
- Sensory neurons transmit information from sensory receptors to the CNS.
- Motor neurons transmit information from the CNS to muscles and glands.
- Interneurons process and integrate information within the CNS.
Neurotransmission
- Neurotransmitters are chemical messengers that transmit signals between neurons.
- Synapse is the gap between two neurons where neurotransmitters are released and received.
- Action potential is the electrical impulse that travels along a neuron, triggering neurotransmitter release.
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Description
Explore the basics of the nervous system, including its components and functions, with a focus on the Central Nervous System (CNS) and Peripheral Nervous System (PNS).
