A&P Lab Histology of Nervous System

Which are the structural units and are highly specialized to transmit nerve impulses from one part of the body to the other?

What is another term for glial cells?

Neuroglia found in the Central Nervous System (CNS) include ____, ____, ____, and ____ cells.

Neuroglia found in the Peripheral Nervous System (PNS) include ____ and ____.

Neuroglia found in the ____  include Schwann and satellite cells

Neuroglia found in the ____ include astrocytes, oligodendrocytes, microglia,   and ependymal cells

Astrocytes are abundant most in the ____ neuralgia.

Microglial cells are ____ cells in the CNS.

Microglial cells are defensive cells in the ___.

Ependymal Cells line ____ fluid-filled cavities.

____ Cells line cerebrospinal fluid-filled cavities.

_____ have processes that form myelin sheaths around CNS nerve fibers.

____ cells and ____ cells (which form myelin) surround neurons in the PNS.

Satellite cells and Schwann cells (which form myelin) surround ____ in the PNS.

Satellite cells and Schwann cells (which form myelin) surround neurons in the ____.

Oligodendrocytes have processes that form myelin sheaths around ____.

____ are abundant most in the CNS neuralgia.

Neurons contain a cell body where the ____ , neuroplasm, ____, and ____ are located

Neurofibrils are the ____ elements

____ are the cytoskeletal elements

Nissil bodies are ____ involved in metabolic activities of the cell

____ are rough endoplasmic reticulum   involved in metabolic activities of the cell

____: A cluster of neuron cell bodies found within the CNS

Nuclei: A cluster of _____ found within the CNS

____: A cluster of neuron cell bodies found outside the CNSBoth nuclei and ganglia make up gray matter

Ganglia: A cluster of neuron cell bodies found outside the CNS

Both nuclei and ganglia make up ____.

Bundle of fibers (neuron processes):

____: Neuron fibers running through the CNS
____: Neuron fibers running through the PNS

Bundle of fibers (neuron processes):

Tracts: Neuron fibers running through the ____.
Nerves: Neuron fibers running through the ___

Bundle of fibers (____):

Tracts: Neuron fibers running through the CNS
Nerves: Neuron fibers running through the PNS

Two types of neuron processes:

Dendrites: are the ____ regions that bear neurotransmitter receptors
Axons: generate and conduct ____.

Two types of neuron processes:

____: are the receptive regions that bear neurotransmitter receptors

____: generate and conduct impulses

____: branches of axons

Collaterals: branches of ____.

______: initial axon segment found beside the cell body

Axon hillock: initial axon segment found beside the _____.

Axon terminals: ends of axons which form ____ with other neurons or effector cells

Axon terminals: ends of axons which form synaptic clefts with other ____ or ____ cells

_____: ends of axons which form synaptic clefts with other neurons or effector cells

Myelin: ____ material that wraps most long nerves

Axons in the PNS are wrapped by ___ cells creating the myelin sheath

____: the exposed plasma membrane of the Schwann cell

Nodes of Ranvier: indentions found in the myelin sheath

Axons in the CNS are wrapped by _____.

Axons in the ___ are wrapped by Schwann cells creating the myelin sheath

Neurilemma: the ___ plasma membrane of the Schwann cell

____: indentions found in the myelin sheath

Axons in the ____ are wrapped by oligodendrocytes

___ in the PNS are wrapped by Schwann cells creating the _____.

Neurilemma: the exposed plasma membrane of the _____.

Nodes of Ranvier: indentions found in the myelin sheath

Axons in the CNS are wrapped by oligodendrocytes

How an impulse travels:

An excited ____ sends an impulse (action potential) down the axon towards the axon terminals across the ____ causing synaptic vesicles to release _____ close to the dendrites of the neighboring neuron.

How an impulse travels:

An excited neuron sends an impulse (_____) down the axon towards the axon ____ across the synaptic cleft causing ____ to release neurotransmitters close to the dendrites of the neighboring neuron.

How an impulse travels:

An excited neuron sends an impulse (action potential) down the axon towards the axon terminals across the synaptic cleft causing synaptic vesicles to release neurotransmitters close to the ____ of the ____ neuron.

Neurons are classified based on ____and ____.

Classifying neurons by structure:

____ neurons: one very short process that extends from the cell body, most neurons conducting impulses to the CNS are unipolar

Classifying neurons by structure:

Unipolar neurons: one very short process that extends from the cell body, most neurons conducting impulses ___ the CNS are unipolar

Classifying neurons by structure:
 
____ neurons: two processes attached to the cell body, found in the eye, ear, and olfactory mucosa

Classifying neurons by structure:

Bipolar neurons: ___ processes attached to the cell body, found in the ___, ___ , and _____.

Classifying neurons by structure:

____ neurons: many processes from the cell body (all dendrites except for one axon process), most neurons in the brain and spinal cord are multipolar neurons

Classifying neurons by structure:

Multipolar neurons: many processes from the cell body (all dendrites except for one axon process), most neurons in the ____ and ____ are multipolar neurons

Classification by function:

_____ or ____ neurons: carry impulses from sensory receptors in the internal organs

Classification by function:


Sensory or afferent neurons: carry impulses from _____ in the internal organs

Classification by function:


_____ or ____ neurons: carry impulses from the CNS to the internal organs, muscles, or glands

Classification by function:


Motor or efferent neurons: carry impulses from the ___ to the internal organs, ____ , or ___.

Classification by function:

____ neurons or ____ : situated between and contribute to pathways that connect sensory and motor neurons

Classification by function:

Association neurons or interneurons: situated between and contribute to pathways that connect ____ and ____ neurons

Each nerve fiber is surrounded by ____, a delicate connective tissue sheath

Each ____ is surrounded by endoneurium, a delicate connective tissue sheath

Each nerve fiber is surrounded by endoneurium, a delicate ____ tissue sheath

Bundles of fibers (____) are bounded by ____, a coarser connective tissue

Bundles of fibers (fascicle) are bounded by ____, a ___ connective tissue

Bundles of fascicles (____) are bounded by epineurium, a white fibrous connective tissue

Bundles of fascicles (nerve) are bounded by ____, a white fibrous connective tissue

Sensory or afferent nerves: carry only sensory processes and carry impulses only ____ the CNS

Mixed nerves: carry both sensory and motor processes; most nerves in the body

Sensory or afferent nerves: carry only sensory processes and carry impulses only toward the CNS

____ nerves: carry both sensory and motor processes; most nerves in the body

A nerve is a bundle of ____ wrapped in a connective tissue sheath that extends to and from the CNS and visceral organs or structures of the periphery body

A ____ is a bundle of neuron fibers wrapped in a connective tissue sheath that extends to and from the CNS and visceral organs or structures of the periphery body

Although, neuroglia resembles neuron in some ways( they have fibrous cellular extensions), they are not capable of ?

Which neuralgia acts as a phagocyte?

Which neuralgia myelinates the cytoplasmic extensions of the neurons?

Which neuralgia plays a role in capillary-neuron exchange and controls the chemical environment around neurons?

Identify 1,2,3,4

Identify 1,2,3,4
 

Identify 1,2,3

Identify 1 and 2

Identify 1 and 2 

Identify 1,2,3

Identify 1,2,3