neuron structure ii

Question 1

dendrites ~ receptors

Answer 1

slender sensitive process ~ dendritic spines & branches

receives incoming information for cell body ~ reception

2 or more dendrites = multi-polar neuron ~ comon

Question 2

dendrites

dendrites receive signals from?

Answer 2

dendrites receive signals from other neurons/sensory organs

Question 3

dendrites

dendrites send electrical signals to where?

Answer 3

dendrites send electrical signals to the soma and axon

Question 4

dendrites

are there often multiple?

Answer 4

yes

Question 5

cell body ~ soma or perikaryon

the cell body includes? contains? produces? where is it stored?

Answer 5

• cytoplasm and nucleus
• contains organelles for energy and metabolism
• cytoskeleton ~ structural support
• produce neurotransmitters ~ ACH..adrenalin & others
• stored in vesicles in axonal terminal ~ for secretion

Question 6

axon

axon has an elongated what?
axon generates & propagates what?
axon cytoplasm also known as what?
membrane of axon known as and what does it propagate?
what does the axon hillock originate and connect?
the end of axon known as?
synaptic knob is most common type of what?

Answer 6

elongated tail-like part of neuron
generates action potentials ~ propagates electric impulses
axoplasm ~ axon cytoplasm
axolemma ~ membrane of axon ~ propagates AP’s
axon hillock ~ originates action potentials and connects “base” of axon to “cell body”
synaptic terminal ~ end of axon ~ axon terminal
synaptic knob ~ most common type of “synaptic terminal”

Question 7

synapse ~ junction

synapse is the site of what? between what? neurotransmitters are released? synapse released from? synapse affects what? neuromuscular junction found? neuroglandular junction found? neuron to neuron called?

Answer 7

*site of inter-cellular communication ~ between nerve cells
*“neurotransmitters” ~ released at synapse ~ ACH stored in “synaptic vesicles”
*released from “pre-synaptic” neuron
*affect “post synaptic” neuron or another effector cell
*neuromuscular junction ~ in muscle ~ NMJ MNJ
*neuroglandular junction ~ in a secretory gland ~ NGJ
neuron to neuron junction ~ synapse

Question 8

the junction between 2 neurons oro between a neuron and an effector cell is known as..

Answer 8

synapse