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WorksheetsNervous Tissue and Cells
Total questions: 42
Worksheet time: 21mins
What is the primary composition of nervous tissue?
Mainly extracellular space
Primarily of cells with very little extracellular space
Only neurons
Only glial cells
What is the function of neurons in the nervous tissue?
Insulating cells
Supporting cells
Conducting cells
Protecting cells
What role do glial cells play in the nervous tissue? (Select 2.)
Conducting signals
Insulating and protecting neurons
Producing myelin sheath
Generating electrical impulses
What is the function of dendrites in a neuron?
They release neurotransmitters.
They receive signals from other neurons.
They produce the myelin sheath.
They send signals to other neurons.
What is the function of axons in a neuron?
They release neurotransmitters.
They receive signals from other neurons.
They produce the myelin sheath.
They send signals to other neurons.
What is the myelin sheath?
A part of the cell body.
The conducting fiber of the neuron.
An insulating fatty layer that speeds transmission.
The part of the neuron that contains the nucleus.
What is the significance of the Node of Ranvier?
It is the site where the nucleus is located.
It is the gap between myelin sheath segments that speeds up neural transmission.
It is the part of the neuron that releases neurotransmitters.
It connects dendrites to the cell body.
What is the cell body of a neuron also called?
Axon
Dendrite
Soma
Synapse
What does the nucleus of a neuron contain?
Cytoplasm
DNA
Neurotransmitters
Axon Terminals
Where are axon terminals found, and what is their function?
At the beginning of the axon, to receive neurotransmitters.
At the far end of the axon, to send neurotransmitters to a neighboring cell.
Inside the cell body, to produce DNA.
On the dendrites, to receive information from other neurons.
Which neurotransmitter is known as the "fight or flight" neurotransmitter?
Serotonin
Dopamine
Adrenaline
GABA
What is the primary function of GABA as a neurotransmitter?
Memory enhancement
Calming
Pleasure
Concentration
Which neurotransmitter is associated with pleasure?
Noradrenaline
Dopamine
Acetylcholine
Glutamate
What role does serotonin play in the nervous system?
It is a memory neurotransmitter
It is a learning neurotransmitter
It is a mood neurotransmitter
It is a euphoria neurotransmitter
What is the space between two neurons where neurotransmitters relay information called?
Axon Terminal
Dendrite
Synapse
Myelin Sheath
What is the name of the structure that insulates the axon of a neuron?
Node of Ranvier
Dendrites
Synaptic Bulbs
Myelin Sheath
What are the gaps along the myelin sheath called? They are involved in the propagation of electrical signals down the axon.
Synaptic Bulbs
Dendrites
Nodes of Ranvier
Schwann Cells
How long can neurons vary in length?
From a fraction of an inch to several inches
From a fraction of an inch to several feet
From a few millimeters to several meters
From a few centimeters to several yards
How many synapses does a typical neuron have?
About 100 to 1,000 synapses
About 1,000 to 10,000 synapses
About 10,000 to 100,000 synapses
About 100,000 to 1,000,000 synapses
Can neurons regrow after being damaged?
Yes, they can fully regrow
Yes, but only partially
No, they cannot regrow
It depends on the type of neuron
What is the function of afferent neurons?
Transmit information from the CNS to the PNS
Communicate information from the PNS to the CNS
Connect different parts of the CNS
Regulate the function of the PNS
What type of cells are unipolar cells?
Cells with multiple processes
Cells with no processes
Cells with only one process
Cells with two processes
What is another name for efferent neurons?
Sensory Neurons
Interneurons
Motor Neurons
Glial Cells
What is another name for afferent neurons?
Sensory Neurons
Interneurons
Motor Neurons
Glial Cells
What do efferent neurons communicate information between?
The PNS to the CNS
The CNS to the PNS
The brain to the spinal cord
The spinal cord to the muscles
What is the characteristic of multipolar neurons?
One dendrite and no axons
Several axons and no dendrites
One axon and several dendrites
No axons and several dendrites
What does the presence of several dendrites and branching axons in the nervous system indicate?
The nervous system is simple with minimal integration
The nervous system is linear with no integration
The nervous system is complex with lots of integration
The nervous system is uniform with no specialization
What do afferent neurons carry?
Motor information from the brain to the peripheral nervous system
Sensory information from receptors in skin/other organs to the central nervous system
Involuntary body responses
Voluntary movement by skeletal muscles
Where are interneurons found?
Only in the Peripheral Nervous System (PNS)
Only in the Central Nervous System (CNS)
In both the CNS and PNS
Outside the nervous system
What is the role of interneurons?
Connect the digestive and respiratory systems
Connect the sensory and motor neurons
Connect the upper and lower limbs
Connect the left and right hemispheres of the brain
What is the structural classification of interneurons?
Unipolar
Bipolar
Multipolar
Pseudounipolar
What do interneurons form within the CNS?
Simple reflex arcs
Complex networking
Linear pathways
Independent circuits
What type of glial cell is part of the Peripheral Nervous System?
Astrocytes
Microglia
Schwann cells
Oligodendrocytes
Which glial cell is known for its role in immune defense in the Central Nervous System?
Ependymal cells
Schwann cells
Satellite cells
Microglia
What is the function of the myelin sheath in neurons?
It generates electrical impulses.
It provides insulation that allows electrical impulses to transmit quickly and efficiently along the nerve cells.
It connects different neurons together.
It stores neurotransmitters for neuron communication.
Which type of glial cells make the myelin sheath in the central nervous system (CNS)?
Astrocytes
Microglia
Schwann cells
Oligodendrocytes
Which type of glial cells make the myelin sheath in the peripheral nervous system (PNS)?
Astrocytes
Microglia
Schwann cells
Oligodendrocytes
What analogy is used in the image to describe the myelin sheath?
A protective helmet
A rubber insulation on an electric cord
A plastic coating on a water pipe
A metal casing around a cable
What is one of the main functions of astrocytes in the CNS?
Producing myelin sheath
Forming and maintaining the blood-brain barrier
Generating electrical impulses
Conducting nerve signals
What do satellite cells in the PNS contribute to?
Synapse formation
Blood flow regulation
Myelin sheath production
Mitochondrial transfer
What is the function of ependymal cells?
Injury repair of neuronal networks
Forming an epithelial lining and production of cerebrospinal fluid
Waste removal from the brain
Nutrient supply to the brain
Which of the following is NOT a function of cerebrospinal fluid?
Nutrient supply to the brain
Waste removal
All are
Protection of the brain
