Human Histology: Nervous Tissue Lab

For faster action potential propagation within the CNS, axons are myelinated and insulated by ______.

In the CNS, the type of neuroglia that replicates to occupy the space of dying neurons is the ______.

The brain ventricles are lined by ______ cells that also contribute to the production of cerebrospinal fluid.

Within the brain and spinal cord, ______ act as phagocytic cells that remove waste and protect against harmful substances.

The ______ forms a part of the blood-brain barrier, limiting what substances can enter the CNS.

The outermost layer of the meninges, known as the ______, is composed of thick, dense irregular connective tissue.

Located between the dura mater and the pia mater, the ______ features a system of loosely arranged trabeculae.

The ______, consisting of flattened mesenchymal-derived cells, is located innermost of the meningeal layers.

The cerebrum's outer region, known as ______, is mainly composed of neuronal cell bodies.

The cerebrum's inner tissue, known as ______, consists mostly of myelinated nerve fibers.

In the spinal cord, interneurons are found within the two ______.

Located peripherally, the ______ of the spinal cord mainly contain ascending and descending myelinated fibers.

In the spinal cord, multipolar motor neurons are located in the two ______.

In the cerebral cortex, the ______ layer is characterized by a high density of small pyramidal cells.

The ______ layer of the cerebral cortex is notable for containing medium-sized pyramidal cells.

Deeper within the cerebral cortex, the ______ layer is characterized by its large pyramidal cells.

The innermost cortical layer, known as the ______ layer, consists of a diverse population of cells.

The ______ cell layer of the cerebellar cortex is situated between the molecular and granular layers.

In the cerebellar cortex, densely packed ______ cells form the innermost layer.

The outermost layer of the cerebellar cortex is the ______ layer.

In the peripheral nervous system, ______ cells surround and insulate axons for faster action potential speed.

[Blank] cells electrically insulate PNS cell bodies and regulate nutrient and waste exchange in ganglia.

The external coat of a nerve, comprising dense connective tissue, is referred to as the ______.

Bundles of nerve fibers are surrounded by ______, a protective connective tissue layer.

Each individual nerve fiber is surrounded by the ______, providing insulation and support.

Nodes of Ranvier and internodal segments are characteristics of ______ nerve fibers.

Unlike myelinated fibers, ______ nerve fibers feature smaller diameter axons and lack multiple wrappings; nodes of ranvier are not seen. They are still supported by Schwann cells.

[Blank] are equivalent to the rough endoplasmic reticulum.

A ______ is a neuron with a single axon and multiple dendrites.

[Blank] is the lipoidal substance that covers the nerve fibers in the CNS and PNS.

The ______ is the germ layer where the nervous tissue is derived.

In the brain, gray matter is located in the ______ region and white matter is located in the ______ region; In the spinal cord, gray matter is located in the ______ region and the white matter is located in the ______ region.

[Blank] is the phagocyte of the nervous tissue.

The ______ is the functional unit of a nervous tissue.

A ______ is a bundle of axons in the peripheral nervous system (PNS), while a ______ is a bundle of axons in the central nervous system (CNS).

A ______ is a collection of neuron cell bodies outside the CNS, while a ______ is a collection of neuron cell bodies inside the CNS.

A ______ ganglion has neuron cell bodies in which processes extend to peripheral tissues while the ______ ganglion is only visceral motor neurons.

The types of neurons can be differentiated via the number of processes of their ______. Multipolar neurons have many; bipolar have two; unipolar have one.

The differences between gray matter in the cerebrum versus the cerebellum is the number of relative ______ and ______.

The three components of the peripheral nervous system consist of ______, ______, and ______.

The part of the neuron that typically transmits signals away from the cell body is the ______.

The type of neuron with one axon and multiple dendrites is classified as a ______ neuron.

[Blank] cells in the central nervous system are responsible for myelinating axons, which speeds up signal transmission.

The brain and spinal cord are the main components of the ______ nervous system.

Within the cerebral cortex, the layer rich in small, densely packed neurons is known as the external ______ layer.

The ______ mater is the meningeal layer directly in contact with the brain and spinal cord.

The outermost layer of the three meninges surrounding the brain and spinal cord is known as the ______ mater.

A key function of ______, a type of glial cell, is to phagocytize and remove cellular debris in the nervous tissue.

The cerebral cortex is organized into six layers, with layer I being identified as the ______ layer.

Unlike oligodendrocytes, ______ Cells myelinate nerve fibers in the peripheral nervous system, enabling faster nerve impulse conduction.

The dorsal and ventral ______ are key structures in the spinal cord's gray matter, with the dorsal horns receiving sensory information.

The abundant glial cells known as ______ have perivascular feet that contribute to the blood-brain barrier.

The area of the brain known as the ______ has a distinct histology, featuring a molecular layer, Purkinje cell layer, and granular layer.

Areas of the central nervous system predominantly composed of myelinated axons are referred to as ______ matter.

A ______ neuron is characterized by a single axon and a single dendrite extending from opposite sides of the cell body.

A ______ is a junction between two neurons where neurotransmitters are released to facilitate communication.

The ______ cells are ciliated and line the ventricles of the brain, aiding in the production and circulation of cerebrospinal fluid (CSF).

The covering of connective tissue that surrounds a nerve fascicle is called the ______.

Groups of neuronal cell bodies located outside the central nervous system are called ______.

The nodes of ______ are gaps in the myelin sheath that expose the axon membrane to facilitate rapid nerve impulse conduction.

The germ layer from which nervous tissue is derived during embryonic development is the ______.

The functional unit of nervous tissue is the ______.

[Blank] are equivalent to the rough endoplasmic reticulum in neurons and are the sites of protein synthesis.

A neuron with a single axon and multiple dendrites is a ______ neuron.

The lipoidal substance that covers nerve fibers in the CNS and PNS is called ______.