week 3- neuronal structure, function and connectivity

Question 1

recap

Answer 1

neuron=basic function NS
to receive, integrate and transmit

Question 2

structure of neurons- sensory, motor, interneuron

Answer 2

sensory- CNS= response to external
motor-carry messager from CNS
interneuron- messages to other neuron

Question 3

structure of neuron 1)

Answer 3

cell body
- DNA( nucleus)
- mitochondria ( energy )
- endoplasmic reticulum ( protein synthesis)

Question 4

2 strcuture= dendrities

Answer 4

branch out cell body and increase surface area
recieve input from other neuron

Question 5

structure neuron- axon

Answer 5

carries infrom body to axon
afferent axon- sensory
efferent axon- moto

Question 6

axon classified

Answer 6

how leave soma= multipolar, bipolar, monopolar

Question 7

conducting zone

Answer 7

axon insulated by glial cells ( myelin sheath)
- CNS
-PHS
PROTECTOR
NODES OF RANVIER- speed

Question 8

presynaptic terminal

Answer 8

end of branched axon
communicate neurons
when nerve reach axon turminal releases neurotransmitters

Question 9

neron dual function

Answer 9

within- ELECTRICAL transmission- cell– down AXON—- NERVEterminal
between- CHEMICAL transmission— nerve terminal—- synapse— target cell ( target cell as independent)