Some Events in Visual Perception
Potassium channels open. Potassium ions move out of the neuron.
Some sodium channels open in the neuronal membrane of the dendrite.
All ion channels close and the Na+/K+ exchange pump starts working.
Some sodium ions diffuse into the neuron membrane of the dendrite.
Lights hit the retina.
The threshold level is reached at the neuronal membrane of the dendrite.
The remaining sodium channels open. Sodium ions move into the neuron.
List, in order, the events in visual perception that must occur for a person to see an object:
2)SEE ATTACHED PHOTOS TO HELP ME ANSWER THIS QUESTION(FIRST PHOTO)
Place the number from the graph that matches the description in the blank below.
1) The voltage gated sodium channels are open. Answer
2) The threshold level of the neuron is represented by the number: Answer
3)The sodium channels have closed. The potassium channels are open and potassium ions are flowing out. Answer
4)The potassium channels are slow to close. The membrane potential is more negative than the resting membrane potential. Answer
3) PLEASE SEE ATTACHED PH0TO TO HELP ME OUT PLEASE (SECOND PHOTO)
Match each structure in the reflex arc numbered above with its description given below.
Structure:
Description:
Dendrite of an interneuron
Axon terminal of a motor neuron
Axon of a sensory neuron The Effector
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