Identify the location and function of the following structures:
$(1)$ Synaptic Knob
$(2)$ Bipolar nerve cell
$(1)$ Synaptic Knob
$(2)$ Bipolar nerve cell
(N/A) $(1)$ Location: The distal branched ends of an axon are swollen and are called synaptic knobs.
Function: They contain synaptic vesicles that store and release neurotransmitters to facilitate signal transmission across the synapse.
$(2)$ Location: These are found in the retina of the eye.
Function: They are responsible for the conduction of nerve impulses from photoreceptor cells to ganglion cells.
Function: They contain synaptic vesicles that store and release neurotransmitters to facilitate signal transmission across the synapse.
$(2)$ Location: These are found in the retina of the eye.
Function: They are responsible for the conduction of nerve impulses from photoreceptor cells to ganglion cells.
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$iii.$ Impulse transmission across an electrical synapse is very similar to impulse conduction along a single axon.
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$v.$ Electrical synapse transmission is very fast.
$vi.$ Electrical synapses are rare in our system.
$i.$ At electrical synapses,the membranes of pre- and post-synaptic neurons are in very close proximity.
$ii.$ Electrical current can flow directly from one neuron into the other across these synapses.
$iii.$ Impulse transmission across an electrical synapse is very similar to impulse conduction along a single axon.
$iv.$ Electrical synapses transmit signals using neurotransmitters like acetylcholine.
$v.$ Electrical synapse transmission is very fast.
$vi.$ Electrical synapses are rare in our system.
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