Podcast
Questions and Answers
What is the primary function of the spinal cord?
What is the primary function of the spinal cord?
- To secrete cerebrospinal fluid.
- To relay messages between the brain and the body. (correct)
- To control voluntary movements of skeletal muscles.
- To regulate heartbeat and digestion.
Which of the following is NOT a component of a neuron?
Which of the following is NOT a component of a neuron?
- Dendrite
- Axon
- Cyton
- Vertebra (correct)
How do myelinated neurons differ in function from unmyelinated neurons?
How do myelinated neurons differ in function from unmyelinated neurons?
- Unmyelinated neurons are responsible for voluntary actions.
- Myelinated neurons transmit impulses more slowly.
- Myelinated neurons are only found in the brain.
- Myelinated neurons transmit impulses faster. (correct)
Which part of the peripheral nervous system is responsible for controlling involuntary activities like digestion?
Which part of the peripheral nervous system is responsible for controlling involuntary activities like digestion?
What protects the spinal cord?
What protects the spinal cord?
How do sensory and motor neurons differ in their function within the nervous system?
How do sensory and motor neurons differ in their function within the nervous system?
Which of the following is a primary function of the cerebellum?
Which of the following is a primary function of the cerebellum?
If a person suffered damage to their medulla oblongata, which of the following functions would most likely be affected?
If a person suffered damage to their medulla oblongata, which of the following functions would most likely be affected?
What is the role of the cerebrum in processing sensory information?
What is the role of the cerebrum in processing sensory information?
How does the structure of the cerebrum contribute to its function?
How does the structure of the cerebrum contribute to its function?
If a person is having difficulty with balance and coordination, which part of the brain is MOST likely affected?
If a person is having difficulty with balance and coordination, which part of the brain is MOST likely affected?
Which type of neuron is responsible for transmitting signals from the brain to a muscle, causing it to contract?
Which type of neuron is responsible for transmitting signals from the brain to a muscle, causing it to contract?
What is the primary function of the meninges and cerebrospinal fluid (CSF) that surround the brain?
What is the primary function of the meninges and cerebrospinal fluid (CSF) that surround the brain?
A person touches a hot stove and quickly pulls their hand away. Which of the following BEST describes the sequence of nerve impulse transmission involved in this reflex action?
A person touches a hot stove and quickly pulls their hand away. Which of the following BEST describes the sequence of nerve impulse transmission involved in this reflex action?
Which BEST describes the central nervous system's (CNS) role in processing sensory information and coordinating a response?
Which BEST describes the central nervous system's (CNS) role in processing sensory information and coordinating a response?
What is the primary function of the nervous system?
What is the primary function of the nervous system?
Which of the following describes the relationship between the central nervous system (CNS) and the peripheral nervous system (PNS)?
Which of the following describes the relationship between the central nervous system (CNS) and the peripheral nervous system (PNS)?
What is the role of dendrites in a neuron?
What is the role of dendrites in a neuron?
What is the primary difference between myelinated and unmyelinated neurons?
What is the primary difference between myelinated and unmyelinated neurons?
Which of the following best describes how neurons communicate with each other to transmit an impulse?
Which of the following best describes how neurons communicate with each other to transmit an impulse?
Flashcards
Spinal Cord
Spinal Cord
A bundle of nerves running from the medulla oblongata down the vertebral column.
Peripheral Nervous System
Peripheral Nervous System
Nerves connecting the CNS to the rest of the body, allowing communication.
Somatic Nervous System
Somatic Nervous System
The voluntary part of the peripheral nervous system controlling skeletal muscle movements.
Autonomic Nervous System
Autonomic Nervous System
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Neuron
Neuron
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Sensory Neurons
Sensory Neurons
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Motor Neurons
Motor Neurons
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Cerebrum Functions
Cerebrum Functions
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Cerebellum
Cerebellum
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Medulla Oblongata
Medulla Oblongata
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Cerebrum
Cerebrum
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Central Nervous System
Central Nervous System
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Nervous System
Nervous System
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Central Nervous System (CNS)
Central Nervous System (CNS)
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Peripheral Nervous System (PNS)
Peripheral Nervous System (PNS)
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Myelinated Neurons
Myelinated Neurons
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Study Notes
The Spinal Cord
- The spinal cord is a bundle of nerves arranged in a cylinder shape, with a central canal.
- It runs down the vertebral column, protected by the vertebrae.
- It's covered by meninges and filled with cerebrospinal fluid.
- It relays messages between the brain and the body.
- It's connected to all body parts by nerves.
The Peripheral Nervous System
- The peripheral nervous system connects the central nervous system to the rest of the body.
- It contains nerves that arise from the brain or spinal cord.
- These nerves branch out to connect to various body parts.
- It carries impulses from sense organs to the CNS and from the CNS to effectors like glands and muscles.
- It's involved in both voluntary (somatic) and involuntary (autonomic) activities.
- Somatic: controls skeletal muscles.
- Autonomic: controls involuntary functions like heartbeat, digestion, and respiration.
The Peripheral Nervous System: Key Components
- Neurons: Nerve cells that carry messages (impulses) to and from the brain and spinal cord.
- Myelinated: have myelin sheath, conducting impulses faster.
- Unmyelinated: lack a myelin sheath.
- Sensory: carry messages from body parts to the CNS.
- Motor: carry messages from the CNS to muscles and organs.
- Nerves: Cable-like bundles of axons.
- Sensory
- Motor
- Mixed (both sensory and motor)
The Central Nervous System
- The CNS (brain and spinal cord) receives information from the body and processes it.
- The brain processes information, controls actions and stores memories.
- The spinal cord relays messages between the brain and the body. It also has some independent actions.
- The Cerebrum: The largest part, involved in learning, memory, emotions, voluntary movement, senses.
- The Cerebellum: Coordinates body movements and balance.
- The Medulla Oblongata: Controls involuntary functions like heartbeat, breathing and swallowing.
The Brain
- Located within the cranium (skull).
- Covered in meninges and cushioned by cerebrospinal fluid (CSF).
- Processes information, controls actions, stores memories.
- Its parts include the cerebrum, cerebellum, and medulla oblongata.
- The brain has three major parts: Cerebrum, Cerebellum and Medulla Oblongata.
- The neurons (cells) of the brain are connected in a network system.
- Communication between neurons occurs at specific places called synapses.
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