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"Nervous System" Dayani Solano Per.2 - Coggle Diagram
"Nervous System" Dayani Solano Per.2
Tissues
neurons
found in the brain, spinal cord, and nerves.
generate and conduct impulses are called neurons or nerve cells.
neuroglia
non-neuronal cells of the nervous system
support system that is essential to the operation
Spinal nerves
Thoracic
located in the upper and middle part of the back
Lumbar
The lumbar region is situated between the thoracic, or chest, region of the spine, and the sacrum.
Cervical
the neck of any organ or structure
Sacral
the bottom of the spine
Coccyxgeal
the very bottom portion of the spine below the sacrum
Neurotransmitters
monoamines
dopamine and norepinephrine
peptides
somatostatin and opioids
amino acids
glutamate and glycine
Major parts and functions of the spinal cord
Sensory functions
monitors sensation of touch, pressure, temperature and pain.
Autonomic functions
regulates digestion, urination, body temperature, heart rate, and contraction of blood pressure
Motor functions
directs your body's voluntary muscle movements.
Action potential & the Nerve Impulse
Action potential
ions suddenly flowing in and out of the neuron.
Nerve impulse
nerve fiber that follows stimulation and serves to transmit a record of sensation
Connective Tissue Coverings
perimysium
transmitting lateral contractile movements
endomysium
allows a muscle to contract and move powerfully while maintaining its structural integrity
epimysium
protects muscles from friction against other muscles and bones.
Classification of neurons
Motor neurons
control all of our muscle movements
Interneurons
connects spinal motor and sensory neurons
Sensory neurons
nerve cells that are activated by sensory input
sending signals to the nervous system
Neurons in the brain
transmit information between different areas of the brain
Major parts and functions of the brain
brainstem
helps regulate breathing and heart rate
cerebellum
helps maintain posture, balance, and equilibrium
coordination and movement related to motor skills,
cerebrum
largest and uppermost portion of the brain.
integrating sensory impulses, directing motor activity, and controlling higher intellectual functions.
Cranial nerves
abducens nerve
trochlear nerve
optic nerve
olfactory nerve
glossopharyngeal nerve
accessory nerve
oculomotor nerve
facial nerve
trigeminal nerve
vagus nerve
vestibulocochlear nerve
hypoglossal nerve
Major functions of the nervous system
peripheral
nerves going from spinal cord to arms, hands, legs and feet
autonomic
nerves that go from spinal cord to lungs, heart, stomach, intestines, and bladder
central nerves
nerves in brain and spinal cord
cranial
nerves going from brain to eyes,mouth, ears, and parts of the brain
major divisions and subdivisions of the nervous system
peripheral nervous system
somatic system
voluntary control of the body movements via the use of skeletal muscles.
autonomic system
regulates involuntary physiologic processes including heart rate, blood pressure, respiration, and digestion
nerves that branch off from the spinal cord; extending
central nervous system
controls most functions of the body and mind.
Compare & contrast the autonomic nervous system
autonomic nervous system
smooth and cardiac muscle, glands
involuntary
tissue can sometimes functions w/o nerve supply
somatic nervous system
skeletal muscle
voluntary
tissues cannot functions w/o nerve supply
Reflex arc
2) sensory neuron
3) control center
1.) sensor
4) motor neuron
5) muscle