Nervous System Faith Gallardo P.7
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Major divisions and subdivisions of the nervous system
neurons
Tissues
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Classification of neurons
Cell body
Classification of neurons
Olfactory I
Cranial nerve
Major parts and functions of the brain
Cerbrum
Frontal lobe
Temporal lobe
Occipital lobe
Parietal lobe
Cerabral Cortex is divided into sensory, motor and association areas
Brain
Largest most complex portion of the nervous system
Cerebellum coordinates muscular activity
Brainstem
Spinal cord
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Axon
Dendrites
Sensory receptor
Sensory input
Brain and Spinal cord
integration
motor output
effector
CNS
PNS
nerve cells
neurogilal cells
CNS
astrocytes
microglial cells
ependymal cells
oligodendrocytes
PNS
satellite cells
Schwann cells
neuroglia
Axons/Fibers
Connective tissue coverings
endoneurium
The axons are bundled together into groups called fascicles
perineurium.
CNS
Brain
Spnial cord
PNS
The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.
sensory (afferent)
motor (efferent).
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small axons and psuedounipolar structure
Motor nerves – larger axons and multipolar structure.
Nervous tissue is the main part of the nervous system the brain, spinal cord, and nerves. These control the body functions. It is made up of neurons, which transmit impulses, and the neuroglia cells, which help the propagation of the nerve impulse as well as provide food to the neuron.
the connective-tissue sheath that surrounds a bundle of nerve fibers.
furnish support and protection for the delicate cells and allow them to withstand the forces of contraction
Endoneurium is the intrafascicular connective tissue. It is composed of several nerve fibers making up a primary fascicle.
a bundle of structures, such as nerve or muscle fibers or conducting vessels in plants.
central nervous system.
The peripheral nervous system refers to parts of the nervous system outside the brain and spinal cord. It includes the cranial nerves, spinal nerves and their roots and branches, peripheral nerves, and neuromuscular junctions.
Schwann cell, also called neurilemma cell, any of the cells in the peripheral nervous system that produce the myelin sheath around neuronal axons.
a stem cell that lies adjacent to a skeletal muscle fiber and plays a role in muscle growth, repair, and regeneration.
A type of cell that receives and sends messages from the body to the brain and back to the body.
the cells responsible for receiving sensory input from the external world, for sending motor commands to our muscles, and for transforming and relaying the electrical signals at every step in between
Any of the cells that hold nerve cells in place and help them work the way they should.
The types of neuroglia include oligodendrocytes, astrocytes, microglia, and ependymal cells.
is a long, slender projection of a nerve cell
Effectors are parts of the body - such as muscles and glands - that produce a response to a detected stimulus.
impulses generated and transmitted by them, cause muscle fibers or pigment cells to contract or glands to secret
The spinal cord and the brain make up the central nervous system (CNS).
Stimuli that are received by sensory structures are communicated to the nervous system where that information is processed
when the body gathers information or data, by way of neurons, glia and synapses
Sensory receptors are dendrites of sensory neurons specialized for receiving specific kinds of stimuli
the spherical part of the neuron that contains the nucleus and holds all of the general parts of the cell.
a usually long and single nerve-cell process that usually conducts impulses away from the cell body
designed to receive communications from other cells. They resemble a tree-like structure, forming projections that become stimulated by other neurons
the cells that make up the brain and the nervous system
spinal cord
medina nerve
cranial nerve
radical nerve
Cerebellum
Thoratic nerves
Lumbar nerves
Sacral nerves
Muscular nerve
Saphenous nerve
Peroneal nerve
Spinal nerves
Oculomotor III
Trochlear IV
Abducens VI
Vestibulocochlear VIII
Hypoglossal XII
Accessory XI
Optic II
Trigeminal V
Facial VII
Vagus X
Sensory receptor
sensory neuron
integration center
Motor neuron
effector target
Reflex arc major parts
Compare & contrast the autonomic nervous system
The autonomic nervous system controls cardiac and smooth muscle as well as the glandular tissue. . The somatic nervous system transmits sensory and motor signals to and form the central nervous system.
A nerve impluse is a sudden reversal of the electrical gradient across the plasa membrane of a resting neuron.
Action potential & the Nerve Impulse
largest terminal branch of the femoral nerve
thin pieces of flesh that form the nerve or muscles in your body
The main nerve of the front of the forearm
pairs of nerves that connect your brain to different parts of your head,neck and trunk
the motor nerve to the serratus anterior muscle
supplies the posterior portion of the upper limb
Branch of the sciatic nerve
Part of the brian located in the back of your brain
five spinal nerves
any of the spinal nerves of the sacral region
processing auditory information and with the encoding of memory
voluntary movement expressive language
visual perception,including colour form and motion
sensory perception and integration
Made up of the brian and spinal cord
parts of the nervous system outside the brain and spinal cord
The eyes,ears,nose,mouth
the nerve cells that are activated by sensory input from the environment
Directly control all of our muscle movements
To a stimulus and effects some change
Sense of smell
enables movement in the eyes superior muscle
sixth cranial nerve responsible for motor function of the eye
12th cranial nerve underside of your tongue
7th cranial nerve controls the muscles of facial expression
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Vision
10th cranial nerve,longest and most complex, gives off cardiac eesophageal pulomonary branches.