Nervous system Flashcards
role of neural of glial cell
glue that stick all system together
role of neutron
fonction unit of system
role of sensory neurone
detect change
role of motor neurone
transport info
3 mains function of nervous system
sensory info
intégrative function
motor function
sensory function carry info to via
carry to brain via sensory (afferent) neurone
what are the 2 type of change detect in sensory function + exemple
internal stimuli: change in blood glucose + vitamin level
external stimuli: change in
Temp or someone hit you
where does integrative info occurs
brain and spinal cord
role of integrative function
Processing of sensory information
• Analyzing and making decisions regarding appropriate
responses
name of neurons that do the integrative function
interneurons
role of motor function
Responding to integration decision,
Carry information out of the brain and spinal cord
neurone that do motor function are _
motor efferent neurons
explain the ans
regulate internal environment. carries info from cns to organ blood vessel glands
the ANS divides into what
sympathetic and parasympathetic
explain sympathetic
arouses the body, activate during high stress situation
explain parasympathetic
calms after arousal, during sleeping
explain somatic nervous system
carries info to cns from sens and from cns to skeletal muscle only
which division of the PNS is only responsible for the skeletal muscle only
somatic
role of CNS
Processing and integrating of sensory information
• Planning and coordinating responses to stimuli
• Providing short term control over activities of other systems
what is the control center for the entire NS
cns
the cns is where
brain and spinal cord
what is the neural tissue outside of cns
pas
what links CNS with sens organs and other system
PNS
cranial nerve in pns emerge from where
brain
spinal nerve in pns emerge from where
spinal cord
most of nerve in pns contains 2 type of what
sensory: going toward
motor: going back out
Nerves have an afferent and efferent division
role of pns
Links CNS with sense organs and other systems
what are the 2 divisions of the efferent portion of pns
SNS and ANS
where does sensory neurone in SNS covey info
Sensory neurons convey information from cutaneous and special sense receptors primarily in the head, body wall and extremities
what are the 2 type of skeletal muscle contraction in sos
voluntary and involuntary
pathway of sns
only one sequence of motor neuron
role of ans
control visceral functions
Regulate smooth muscle, cardiac muscle, and glandular activity
what type of muscle contraction is the ANS
involuntary
pathway of ans
2 sequences of neurons
1st MN quit and than synapse in a ganglion outside , than a 2nd motor neuron go to the effector
the parasympathetic preglanglion is always myelinise and the postglanglionic neurone is always unmyletinated
where does sensory neurons bring info in ans
Sensory nrs convey homeostatic information from receptors primarily in the viscera to the CNS
where does motors neurons conduct impulse in ans
Motor nrs conduct impulses to smooth muscle, cardiac muscle and glands
what are the 2 main type of cell in the nervous system + explain
neurons (nerve impulse conduction) and neuroglia (support and protect NS)
what are the type of neuroglia (glia cells) in cns
Astrocytes
Oligodendrocytes
• Microglia
• Ependymal cells
explain astrocyte
provide a barrier by wrapping around artery that supply the brain so it only allows the nutrient from blood to get through. Block all toxine and waste
explain microglia
remove cell tissue damage, clean area around nervous tissue
explain ependymal cells
found around ventricle. Produce CSF, help protect ventricle from getting toxic substance
which neuroglia isfound around ventricle. Produce CSF, help protect ventricle from getting toxic substance
ependymal cells
role of oligodendrocytes
form myelin
which neurogliaremove cell tissue damage, clean area around nervous tissue
microglia
which neurogliaprovide a barrier by wrapping around artery that supply the brain so it only allows the nutrient from blood to get through. Block all toxine and waste
astrocyte
which neuroglia form myelin
oligodendrocyte
what are the neuroglia found in PNS
satellite cells and Schwann cells
function of satellite cells
found around cell body (soma), protect nourish cell body of pns
which type of neuroglia is found around cell body (soma)
satellite cells
which system is engage as soon as we think of food
enteric nervous system (ens)
