Nervous Tissue and Glial Cells Quiz

Dendrites contain 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.

Nissl bodies are represented by mitochondria.

Nodes of Ranvier are interruptions occurring in the myelin sheaths 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 efferent.

Only bipolar neurons consist of 2 axons.

Melanin granules are found in neurons in certain regions of the CNS.

Axons transmits impulses to other neurons or effector cells.

Arachnoid is the outermost layer of meninges.

Neuronal damage within the CNS appears to be irreparable.

Epineurium covers each bundle of nerve fibers.

White matter covers each bundle of nerve fibers.

Ganglia are aggregation of perikaryons of neurons outside of the CNS.

Motor neurons are sending impulses to effector organs/tissues.

Protoplasmic astrocytes are present in the grey matter of the CNS.

Schwann cells form myelinated and unmyelinated coverings over axons of the PNS.

Their function is the metabolic and mechanical support and protection of neurons.

Ependymal cells can be ciliated in some regions.

Microglial cells are macrophages of CNS.

Astrocytes regulate neuronal activity and metabolism.

Ependymal cells are macrophages of CNS.

Ependymal cells are epithelial-like cells lining the ventricle of brain and central canal of the spinal cord.

Microglial cells derive from precursor cells in bone marrow.

Astrocytes belong to mononuclear phagocytic system.

Astrocytes form pedicels (vascular feet).

Astrocytes form pia-glial membrane.

Oligodendrocytes are myelin-forming cells in CNS.

Each swan cell is covered by basal lamina.

Fibrous astrocytes and astrocytes are found in CNS.

Nissl bodies are found in perikaryon and dendrites.

Most neurons have only one dendrite.

Neuron is metabolic inactive cell.

Multipolar has many axons and one dendrite.

Its composed of perikaryon and processes.

Contains automatic nucleus.

Nissl body is formed by mitochondria.

Are divided into sensory or an autonomic ganglion.

Sensory ganglia are surrounded by connective tissue capsule.

Are composed of both perikaryons and nerve fibers.

Consists only of ganglion cells.

Multipolar neurons are present in autonomic ganglia.

Pseudounipolar neurons present in sensory ganglia.

Are surrounded by endoneurium.

Are composed of nerve fibers only.

Schwann cells envelop multiple axons.

Oligodendrocytes envelop axons in PNS.

Nodes of Ranvier are commonly visible along unmyelinated nerve fibers.

Myelin sheath wraps each axon.

Schwann cells envelop just one axon.

Nodes of Ranvier are not seen along unmyelinated nerve fibers.

Surrounds the whole nerve.

Contains the blood vessels.

Is dense, irregular fibrous connective tissue.

Surrounds one fascicle of nerve fibers.

Is covering the CNS.

Is covering axons and Schwann cells.

Have a rich network of reticular fibers.

Surrounds single nerve fibers.

Is covering the cerebellum.

Directly surrounds the external laminae of the Schwann cells.

Is loose connective tissue.

Match the following cell types with their corresponding locations within the nervous system:

Are present in the PNS.

Form unmyelinated fibers in PNS.

Sheath composed of lemmocytes will always form myelin around the axons.

Are responsible for myelination in the PNS.

Surround and insulate PNS axons and myelinate those having large diameter.

Allows for faster action potential propagation along an axon in the PNS.

In CNS axons are sheathed by lemmocytes.

Small nerves don't have lemmocytes.

Are called also ependymocytes.

Line the central canal of the spinal cord.

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.

Which molecules are permissive for neural crest cells migration?

The neural crest originates from the mesenchyme.

The neural crest originates from the mesoderm.

Neural crest cells arise as a result of an inductive action by neuroectoderm.

Neural crest cells arise as a result of an inductive action by mesoderm (possibly).

Neural crest cells arise as a result of an inductive action by non-neural ectoderm

The neural crest originates from cells located along the lateral margins of the neural plate.

They separate the outflow tract of the heart into aortic and pulmonary segment.

Match the following events in embryonic development with their approximate timeframes:

The never differentiate into bone.

They differentiate into cells and tissues that constitute much of soft and hard tissues of the face.

They migrate toward the gut.

They leave the future brain well before closure of the neural folds.

Which cells or structures are differentiated from neural crest cells?

From the neural crest arise

What is the inductive role of levels bone morphogenic protein (BMPs)?

What is the function of snail 1 and 2?

Plasma contains fibrinogen.

The reticulocytes are not fully mature erythrocytes.

Lymphocytes constitute 4-8% of circulating leukocytes.

Membrane of normal erythrocytes has high flexibility.

The biconcave shape of erythrocytes facilitates gas exchange

Lymphocytes can return from CT to blood.

Neutrophils are less numerous than eosinophils.

Dense tubular system is present in hyalomere of platelets.

Lymphocytes have oval horseshoe or kidney-shaped nucleus.

Leukocytes are the predominant cells of blood.

Hemoglobin could be found within eosinophil cytoplasm.

The red blood cells can leave the blood vessels by diapedesis.

Basophils are the most numerous granulocytes.