أسئلة المحاضرتين 11 و 12 هستولوجي (قبل التعديل)

What is the structure of sensory ganglia neurons?

Which type of neuron has a star-shaped body?

Which term refers to the cytoplasm of a nerve cell's axon?

Which feature is characteristic of naked fibers?

What role do nodes of Ranvier play in nerve fibers?

Which layer of connective tissue surrounds the entire nerve trunk?

What is the primary function of the myelin sheath?

What occurs at a synapse?

What is the primary function of specialized cells in the nervous system?

What structures are responsible for carrying nerve impulses away from the cell body?

Which organelle is NOT typically found in the cytoplasm of a neuron?

What characterizes dendrites in a typical neuron?

What type of ganglia is associated with the autonomic nervous system?

What are the main components of a neuron?

Which basic stain is commonly used in histology for neuronal assessment?

What is one feature that distinguishes the axon from dendrites?

What is the primary function of neurovesicles in the presynaptic neuron?

Which part of the neuron does the synaptic cleft connect?

Which type of synapse allows for the rapid transmission of electrical signals?

What is the approximate width of the synaptic cleft?

Which of the following cells in the nervous system can transform into macrophages?

Which cell type is responsible for supporting neurons by connecting them to blood vessels?

What is primarily delivered to the synapse by the terminal button of an axon?

Which type of glial cell is primarily found in the peripheral nervous system?

What is the primary function of oligodendrocytes in the central nervous system (CNS)?

Which cells are responsible for myelination in the peripheral nervous system (PNS)?

How many neurons can one oligodendrocyte myelinate?

What type of neuronal cell is commonly described as having a central nucleus and numerous processes?

What distinguishes Schwann cells from oligodendrocytes in their myelination process?

What characteristic distinguishes pseudounipolar neurons from other neuron types?

Which statement accurately describes the relationship of neuron cells in the context of their organization?

What role do astrocytes perform within the nervous system?

Which type of neuron is characterized by having two processes: a dendrite and an axon?

In terms of axon structure, what does the term 'axoplasmic' refer to?

Which type of fibers is characterized as being non-myelinated and lacking neurolemma?

What is the primary role of the nodes of Ranvier in myelinated nerve fibers?

What tissue structure provides insulation to nerve impulses, specifically in myelinated fibers?

Which connective tissue type divides the nerve trunk into bundles?

What characterizes the structure of neurons in sympathetic ganglia?

At what anatomical point does the transmission of a nervous impulse occur between neurons?

Which part of a neuron increases the surface area for receiving impulses?

What is the primary role of the spinal cord within the nervous system?

Which structure within a neuron is responsible for carrying impulses away from the cell body?

What characteristics distinguish the cytoplasm of a neuron?

Which type of impulse is characterized by moving toward the cell body?

What distinguishes the structure of a neuron from other cells?

Which type of ganglia is structured to relay sensory and autonomic signals respectively?

What does the term 'basophilic granules' refer to in a neuron?

What is the primary role of neurotransmitters within the synaptic cleft?

Which glial cells are primarily involved in providing support and nutrition to neurons?

What is the function of neurovesicles in the terminal button of an axon?

Which type of synapse is characterized by the direct connection of electrical signals between neurons?

What structural feature primarily differentiates astrocytes from other glial cells?

What is the approximate width of the synaptic cleft, allowing neurotransmitter passage?

Which neural structure is directly responsible for connecting the axon of one neuron to the dendrites of another?

What type of synaptic transmission occurs when an impulse travels through a thin space connecting two neurons?

Which statement accurately describes the function of oligodendrocytes in the central nervous system?

Which characteristic distinguishes Schwann cells from oligodendrocytes when it comes to myelination?

What structural feature of pseudounipolar neurons contributes to their function in the nervous system?

What significant role do the flat cells forming a tube around nerve fibers serve?

In the central nervous system, what distinguishes oligodendrocytes in terms of their structure?

What is a common feature of the cells surrounding neurons in sensory, sympathetic, and parasympathetic ganglia?

Which aspect of nerve fibers is most affected by the presence of myelin?

What is the classification of neurons based on the central position of their nucleus?

What is the role of specialized cells in the nervous system?

Describe the significance of Nissl granules in neurons.

What key feature allows dendrites to receive more impulses?

Explain the difference in directionality of impulse transmission between dendrites and axons.

What structural characteristic is common in neurons of the spinal cord?

In terms of signal processing, what occurs when integrating sensory information in the nervous system?

How do the neuron processes, particularly axons, differ from each other structurally?

What role do cranial and spinal nerves play within the nervous system?

Describe the structure and function of nodes of Ranvier in myelinated nerve fibers.

What distinguishes myelinated fibers with neurolemma from those without?

How is the structure of bipolar neurons in the retina specifically adapted for its function?

Explain the role of axolemma in neuron structure.

What is the significance of having a dense connective tissue layer surrounding nerve trunks?

In how many ways can non-myelinated fibers be categorized based on their structural characteristics?

Identify a key feature of spinal ganglia neurons and its role in their functionality.

What typically differentiates the axon from the dendrites in terms of structure?

What initiates the release of neurotransmitters from the presynaptic neuron?

Describe the role of astrocytes in the nervous system.

Explain the significance of the synaptic cleft in neurotransmission.

What distinguishes gap junctions from chemical synapses?

Identify the approximate width of a typical synaptic cleft.

What type of synapse is characterized by the connection of an axon to a dendrite?

How do ependymal cells contribute to the nervous system?

What chemical messengers are typically found in neurovesicles?

What is the primary function of the cerebrospinal fluid (CSF)?

How do oligodendrocytes and Schwann cells differ in their roles within the nervous system?

In which part of the nervous system are pseudounipolar neurons predominantly found?

What characteristic of oligodendrocytes allows them to myelinate multiple neurons?

What histological feature distinguishes the arrangement of cells in sympathetic ganglia compared to spinal nerve roots?

How are the myelination processes of Schwann cells and oligodendrocytes related to the pathology of certain neurological diseases?

Describe the implications of having thinly myelinated fibers in the nervous system.

What histological distinctive feature is observed in the nerve fibers of dorsal roots of spinal nerves?

What specialized structure in the nervous system is responsible for the transmission of electrical impulses?

How do dendrites differ from axons in structure and function?

What organelles in the neuron are involved in maintaining cell survival and processing metabolic functions?

What distinctive feature characterizes the cell body of neurons?

What is the role of basophilic granules in the cytoplasm of a neuron?

What is meant by the terms 'centripetal' and 'centrifugal' in relation to nerve impulses?

How do the functions of ganglia differ in the peripheral nervous system?

What common histological stains are used to identify neuronal structures?

What are neurovesicles and what is their main content?

Explain the role of the synaptic cleft in neuronal communication.

Describe the function of astrocytes in the nervous system.

What type of synaptic connection is facilitated by gap junctions?

Identify one type of glial cell present in both the central and peripheral nervous systems.

How do neurotransmitters affect the postsynaptic neuron?

What structural feature distinguishes microglia among glial cells?

What are the key components involved in the release of neurotransmitters?

What is the role of oligodendrocytes in the CNS?

How do Schwann cells differ in their function compared to oligodendrocytes?

What structural characteristic is typical of pseudounipolar neurons?

Describe the myelination process of nerve fibers in the PNS.

What types of cells are primarily responsible for secretion of cerebrospinal fluid (CSF)?

What is one major difference in the arrangement of myelinated fibers in groups of neurons?

How does the structure of neurons in sympathetic ganglia differ from those in sensory ganglia?

What role do small cells surrounding neurons play within the nervous system?

Describe the structure of the axon and its surrounding membranes.

What is the function of the myelin sheath in nerve fibers?

Explain the significance of nodes of Ranvier in myelinated fibers.

What is the composition and function of the connective tissue surrounding the nerve trunk?

Describe the differences between myelinated and non-myelinated fibers.

What types of neurons are described as having a fusiform shape?

Identify the structural characteristics of bipolar neurons in the retina.

What distinguishes the synapse as a point of signal transmission?