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WorksheetsIntro to the Nervous System
Total questions: 88
Worksheet time: 51mins
Which of the following best describes the integration function of the nervous system?
A) Gathering information from the environment
B) Transmitting motor commands to muscles
C) Processing and interpreting sensory information
D) Detecting stimuli through sensory receptors
Which part of the peripheral nervous system is responsible for transmitting sensory information to the central nervous system?
A) Somatic nervous system
B) Motor (efferent) pathways
C) Sensory (afferent) pathways
D) Autonomic nervous system
Which subdivision of the autonomic nervous system is involved in conserving and restoring energy?
A) Somatic nervous system
B) Sympathetic nervous system
C) Parasympathetic nervous system
D) Sensory (afferent) pathways
Which structural classification of neurons is primarily found in sensory organs like the retina?
A) Unipolar
B) Bipolar
C) Multipolar
D) Pseudounipolar
Which of the following is a function of the motor (efferent) pathways?
A) Detecting stimuli from the environment
B) Processing sensory information
C) Carrying commands from the CNS to muscles and glands
D) Interpreting sensory input
Which structural classification of neurons typically has one axon and multiple dendrites?
A) Unipolar
B) Bipolar
C) Multipolar
D) Pseudounipolar
Which type of glial cell is responsible for myelinating axons in the central nervous system?
A) Astrocytes
B) Oligodendrocytes
C) Schwann cells
D) Microglia
What is the primary function of microglia in the CNS?
A) Synaptic transmission
B) Insulating axons
C) Phagocytosis and immune surveillance
D) Nutrient supply
What is the primary function of the myelin sheath?
Which of the following functions is associated with the nodes of Ranvier?
A) Nutrient supply to neurons
B) Insulation of axons
C) Facilitation of saltatory conduction
D) Generation of neurotransmitters
Which disorder is characterized by the immune system attacking myelin sheaths in the CNS?
A) Myasthenia Gravis
B) Multiple Sclerosis
C) Amyotrophic Lateral Sclerosis
D) Parkinson’s Disease
Which part of the astrocyte is directly involved in maintaining the blood-brain barrier?
A) Cell body
B) Dendrites
C) Axonal terminals
D) Endfeet
Which type of glial cell is responsible for myelinating axons in the peripheral nervous system?
A) Astrocytes
B) Oligodendrocytes
C) Schwann cells
D) Microglia
Which of the following best describes the function of nuclei in the CNS?
A) Transmitting motor commands to muscles
B) Relaying sensory information to the brain
C) Clusters of neuron cell bodies performing specific functions
D) Providing structural support to neurons
Which of the following best describes the function of gray matter?
A) Transmitting electrical signals quickly over long distances
B) Processing and integrating information
C) Providing structural support to neurons
D) Protecting the brain from mechanical damage
What is the primary function of ependymal cells in the CNS?
A) To myelinate axons
B) To produce and circulate cerebrospinal fluid
C) To act as immune cells
D) To provide structural support to neurons
Which of the following is NOT a function of cerebrospinal fluid (CSF)?
A) Mechanical protection for the brain and spinal cord
B) Nutrient transport to neurons and glial cells
C) Electrical signal transmission
D) Removal of metabolic waste products
What condition is characterized by an excessive accumulation of CSF, often due to impaired drainage or overproduction?
A) Meningitis
B) Hydrocephalus
C) Alzheimer’s Disease
D) Multiple Sclerosis
Which of the following best describes the role of astrocytes in the chemical environment of the CNS?
A) Generating electrical impulses
B) Absorbing excess neurotransmitters and maintaining ion balance
C) Myelinating axons
D) Producing cerebrospinal fluid
Which part of the neuron contains the nucleus and organelles?
A) Dendrite
B) Axon
C) Cell body (soma)
D) Axon terminal
What is the approximate length of a node of Ranvier?
A) 1-2 nanometers
B) 1-2 micrometers
C) 1-2 millimeters
D) 1-2 centimeters
What is the primary function of satellite cells in the PNS?
A) To myelinate axons
B) To provide structural support and maintain the microenvironment around neuron cell bodies
C) To act as immune cells
D) To produce cerebrospinal fluid
Which neurological disorder is characterized by the degeneration of neuron cell bodies in gray matter, particularly in the basal nuclei?
A) Multiple Sclerosis
B) Parkinson's Disease
C) Amyotrophic Lateral Sclerosis
D) Guillain-Barré Syndrome
Which glial cell type is involved in the production and circulation of cerebrospinal fluid (CSF)?
A) Astrocytes
B) Oligodendrocytes
C) Microglia
D) Ependymal cells
In the peripheral nervous system, __________ cells surround neuron cell bodies within ganglia and help maintain the microenvironment around neurons.
A) Schwann
B) Satellite
C) Oligodendrocytes
D) Astrocytes
What is the primary role of the cerebellum?
Memory and learning
Coordination and balance
Emotional regulation
Visual processing
What is the main function of sensory neurons?
To transmit signals to the central nervous system from sensory receptors
To control voluntary muscle movements
To regulate the autonomic functions of the body
To process information in the brain
Which part of the brain is responsible for higher cognitive functions such as reasoning, planning, and problem-solving?
Brainstem
Cerebellum
Cerebral cortex
Hippocampus
Which part of the central nervous system is responsible for processing information and making decisions?
Spinal cord
Brain
Peripheral nerves
Autonomic ganglia
The blood-brain barrier is important because it:
Allows all substances from the blood to enter the brain
Protects the brain from harmful substances and pathogens
Transmits electrical signals directly into the brain
Regulates the production of neurotransmitters
What are the two main divisions of the nervous system?
Central and Peripheral Nervous Systems
Autonomic and Somatic Nervous Systems
Sympathetic and Parasympathetic Nervous Systems
Sensory and Motor Nervous Systems
Which part of the central nervous system acts as the primary relay center for sensory information?
Cerebrum
Cerebellum
Spinal cord
Thalamus
What is the primary function of the spinal cord?
To serve as the main structural support of the body
To relay information between the brain and the rest of the body
To produce cerebrospinal fluid
To process visual information
Which of the following structures is part of the central nervous system?
Spinal cord
Cranial nerves
Peripheral nerves
Ganglia
part of the peripheral nervous system that transmits impulses to and from skin and skeletal muscles
Somatic nervous system
part of the brain that regulates body temperature, appetite, thirst, and water balance
Hypothalamus
part of the peripheral nervous system that transmits impulses from the central nervous system to internal organs
Autonomic nervous system
branch of the autonomic nervous system that controls organs and is most active during emergencies or stress
Sympathetic nervous system
branch of the autonomic nervous system that controls organs and is most active when the body is at rest
Parasympathetic nervous system
What are the two main divisions of the nervous system?
Central and Peripheral Nervous Systems
Autonomic and Somatic Nervous Systems
Sympathetic and Parasympathetic Nervous Systems
Sensory and Motor Nervous Systems
Sympathetic nervous system
Parasympathetic nervous system
Autonomic nervous system
Peripheral nervous system
The peripheral nervous system is divided into what two main parts?
Central and Autonomic
Somatic and Autonomic
Sympathetic and Parasympathetic
Sensory and Motor
The sympathetic and parasympathetic nervous systems are part of which larger system?
Central Nervous System
Peripheral Nervous System
Autonomic Nervous System
Somatic Nervous System
Which of the following is a characteristic of the parasympathetic nervous system?
It prepares the body for intense physical activity.
It slows down heart rate and promotes digestion.
It is primarily involved in the "fight or flight" response.
It controls voluntary muscle movements.
What is the main function of the autonomic nervous system?
To control voluntary movements
To process sensory information
To regulate involuntary body functions
To coordinate reflexes
Your cheeks flush when you are embarrassed
somatic
autonomic
Which nervous system provides parasympathetic and sympathetic innervation to the GI tract?
Peripheral Nervous System
Enteric Nervous System
Autonomic Nervous System
Central Nervous System
Division of the ANS that kicks in when you're giving a speech in front of the class.
sympathetic
parasympathetic
Which part of the Peripheral Nervous System is responsible for involuntary control of organs?
Somatic Nervous System
Sympathetic Nervous System
Autonomic Nervous System
Parasympathetic Nervous System
The cells that carry information through your nervous system are
protons
cardiac muscles
electrons
neurons
a cell within
the nervous system that transmits information to other
nerve, muscle, or gland cells.
neuron
proteins
jet lag
synchronize
Which 2 types of glial cells perform the same functions but in different areas of nervous system?
Astrocytes & Schwann Cells
Oligodendrocytes & Schwann Cells
Microglial Cells & Satellite Cells
Ependymal Cells & Oligodendrocytes
What is the function of the myelin sheath?
Enhances nerve impulses
Protects neurons
Speeds up the conduction of nerve impulses
Facilitates neurotransmitter release
What is the function of the myelin sheath?
The function of the myelin sheath is to protect and enhance the speed of nerve signal transmission.
The function of the myelin sheath is to store and release energy.
The function of the myelin sheath is to regulate the production of neurotransmitters.
The function of the myelin sheath is to insulate the nerve fibers.
Which part of the neuron is responsible for transmitting signals to other neurons or effector cells?
Dendrites
Cell body
Axon
Nucleus
Which structure in the neuron serves as its main metabolic center?
Axon
Dendrites
Cell body (soma)
Nucleus
Which part of the neuron receives signals from other neurons?
Axon
Dendrites
Cell body
Myelin sheath
What is the main function of sensory neurons?
To transmit signals to the central nervous system from sensory receptors
To control voluntary muscle movements
To regulate the autonomic functions of the body
To process information in the brain
Which type of neuron transmits signals away from the central nervous system to muscles or glands?
Sensory neurons
Motor neurons
Interneurons
Pyramidal neurons
What is the primary function of a neuron?
To support and protect nervous system structures
To transmit information throughout the body
To supply nutrients to nervous system tissues
To isolate and remove waste products from the brain
The long part of a nerve cell along which the electrical signal quickly moves.
Axon
Small extensions found on the end of dendrons that connect one neuron to another.
Dendrite
Extensions found at the end of a nerve cell.
Dendrons
A substance made from protein and lipids (fat) that surrounds the axon of a nerve cell. The myelin sheath insulates the axon and increases the rate at which electrical signals travel through the nerve.
Myelin
Nerve cells. They carry an electrical message or impulse when stimulated.
Neurons
Gaps in the myelin sheath surrounding axons are calleD:
nodes of Ranvier
Schwann cells
interneurons
effectors
Sensory neuron
Motor neuron
Interneuron
Afferent neuron
Sensory neurons are also called ____________ neurons
Afferent
Efferent
Motor/efferent
Motor/afferent
Sensory/afferent
Sensory/efferent
Type of neuron that carries messages from the body to the brain/spinal cord:
Afferent/sensory
Efferent/motor
Which of the following is a true statement?
Efferent neurons send impulses from the senses to the CNS
Motor neurons send impulses from the PNS to the CNS
Afferent neurons send impulses from the senses to the CNS
Sensory neurons send impulses from the CNS to the body
What are neurons primarily responsible for?
Producing hormones
Communicating with each other at specialized junctions called synapses
Storing energy
Attaching muscles to bones
What is the gap between two neurons called?
Axon terminal
Synaptic cleft
Dendritic spine
Neural pathway
Where two neurons meet there is a gap called a (a) . The membranes of each neuron are in very close contact and are separated by a narrow space called a (b) . An (c) impulse (d) be received across the gap.
Identify the vesicle.
What is the primary role of neurotransmitters in the synaptic cleft?
To facilitate the opening of voltage or ligand-gated ion channels on the post-synaptic membrane.
To directly initiate the generation of action potentials in the receiving neuron.
To serve as structural components of the synaptic cleft.
To be reabsorbed by the pre-synaptic neuron, ending the transmission signal.
