Nervous tissue
Test Your Knowledge on Nervous Tissue
Delve into the fascinating world of nervous tissue with our engaging quiz! Designed for biology enthusiasts, medical students, and professionals, this quiz covers a range of topics pertaining to neurons, neuroglial cells, and their fun
- Assess your understanding of key concepts
- Challenge yourself with various question types
- Learn more about the complexities of the nervous system
What are neurons responsible for?
Have receptive abilities
Motoric functions
Be intergrative
Contractions
Irritability
The junction between the axon of one neuron and the dendrite of the next is called
A joint
A synapse
Junction point
Constant bridge
What are neuroglial cells
Nonsensory supporting cells
Secretory cells
Sensory cells
Sensory and supporting cells
Axons form nerves in
Autonomic nervous system
Automatic nervous system
Central nervous system
Peripheral nervous system
Cranal nervous system
Synovial nervous system
Ganglion
Consists of nerve fibers only
Consists of perikaryon and nerve fibers
Ganglion cells are multipolar neurons (outer ganglian cells)
Does not contain glial cells
Is found in the spinal cord (dorsal root ganglion)
is a collection of neuronal bodies
Contains cell bodies of neurons and glial cells
Located inside the CNS
Sensory and autonomic
Dendrites
Most neurons only have one dendrite
They maintain a constand diameter from one end to another
Subdivide as they become thinner
Bipolar neurons have two dendrites
Bipolar neurons have one dendrite
There is no Nissl´s substance in their cytoplasm
The average amount of dendrites per neuron is 5-7
Cerebrospinal fluid is produced by
Schwann cells
Nissl bodies
Oligodendrocytes
Choroid plexuses
Dura mater
Neuron
Is composed of perikaryon + processes
Multipolar has many axons + 1 dendrite (multiple dendrites)
Contains euchromatic nucleus
Nissl´s substance (body) is formed by mitochondria (RER)
The processes of a neuron are axons and dendrites
Neurons are metabolically active
Nissl bodies
Found in axon hillock
Are found in dendrites
Are composed of RER + polyribosomes
Are types of inclusions
Participate in the synthesis of proteins
Are found in the soma
Which statement regarding nerve tissue is true?
Dendrites contains Nissl bodies
Sensory neurons conduct nerve impulse to CNS
Synapses are structures responsible for the transmission of nerve impulses from one neuron to the other
Nissl bodies are present in perikaryon and dendrites
Nodes of Ranvier are interruptions occuring in the myelin sheats at regular intervals along the length of the axon
Nervous tissue is vascularized
Ependymocytes are present in the ganglia
Neuronal signals are conducted faster in electrical synapses than in chemical
Pseudounipolar neurons can be found in the olfactory epithelium
Sensory neurons are effect
Motor neurons are effect
Which statement regarding glial cells is true?
Protoplasmic astrocytes are present in the gray matter of the CNS
Schwann cells form myelated and unmyelated coverings over axons in the PNS
Their function is the metabolic and mechanical support and protection of neurons
Ependymal cells are macrophages of the CNS
Microglial cells derive from precursor cells in the bone marrow
Protoplasmic astrocytes are present in the white matter of the CNS
Astrocytes belong to mononuclear phagocytic system
Which statement regarding glial cells is true?
Ependymal cells can be ciliated in some regions
Microglial cells are macrophages of CNS
Astrocytes regulate neuronal activity and metabolism
Astrocytes form pedicels (vascular feet)
Astrocytes form piaglial membrane
Oligodendrocytes are myelin forming cells of the CNS
Which statement regarding neurons are correct?
Nissl bodies are found in the perikaryon and dendrites
Most neurons only have one dendrite
Neurons are metabolic inactive cells
Multipolar neurons has many axons and one dendrite
Contains euromatic nucleus
Which statement regarding ganglia is true?
Are divided into sensory or an autonomic ganglia
Sensory ganglia are surrounded by connective tissue capsule
Are composed of both perikaryon and nerve fibers
Consists only of ganglion cells
Multipolar neurons are present in autonomic ganglia
Are surrounded by endoneurium
Are composed only of nerve fibers
Unmyelinated axons
Schwann cells envelop multiple axons
Oligodendrocytes envelope axons in the PNS
Nodes of Ranvier are commonly visible along unmyelinated nerve fibers
Myelin sheath wraps each axon
Schwann cells envelop just one axon
Nodes of Rancier are not seen along unmyelinated nerve fibers
Which statement regarding epineurium is true
Surrounds the whole nerve
Contains blood vessels
Is dense, irregular fibrous connective tissue
Surrounds one fascile of nerve fibers
Covers the CNS
Covers axons and Schwann cells
Has a rich network of reticular fibers
Covers the cerebellum
Directly surrounds the external laminae of the schwann cells
Is loose connective tissue
Cells - place of presence
Satelite cells - ganglia
Oligodendrocytes - CNS
Ependomocytes - central canal
Microglial - CNS
Oligodendrocytes - PNS
Microglial - PNS
Lemmocytes
Are present in the PNS
Forms unmyelinated fibers in the PNS
Sheath composed of lemmocytes will always form myelin around axons
Are responsible for the myelination in the PNS
Are responsible for the myelination in the CNS
In CNS axons are sheathed by lemmocytes
Small nerves does not have lemmocytes
Which statement regarding interneurons are true?
Can connect motor neurons with sensory neurons
Can be multipolar neurons
Are association neurons
Creates the majority of neurons in the human CNS
Are a type of sensory neurons
Their axons are always myelinated
Creates the minority of neurons in the human CNS
How can neurons be classified
Bipolar
Unipolar
Multipolar
Apolar
Nonpolar
Sensory
Motoric
Static
Interneurons
Intraneurons
What is correct about axons?
Transmits impulses to other neurons or effector cells
Conducts impulses from environment
Conducts impulses from perikaryon
Axon hillock and initial segment
Has varying diameter
Has collateral branches
Possesses Nissl bodies
Unmyelinated in the CNS
Synapses
Axosomatic - between axon and soma
Axoaxonic - between an axon and a dendrite
Dendrodendritic - between two dendrites
Axodendritic - between a soma and a dendrite
True about astrocytes
Smallest cells of the neuroglial cells
Divided into protoplasmic and fibrous astrocytes
Protoplasmic - white matter of CNS
Fibrous - white matter of CNS
Protoplasmic - abundant cytoplasma
Fibrous - euchromatic cytoplasm
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