× Didn't find what you were looking for? Ask a question
  
  
Top Posters
Since Sunday
V
9
C
7
B
7
7
a
7
S
7
l
7
l
7
j
7
B
7
k
7
s
6
New Topic  
ohemati ohemati
wrote...
Posts: 50
Rep: 1 0
2 years ago Edited: 2 years ago, ohemati
28. A neuron was isolated from structure number 3 in the diagram above.
When comparing the velocity of action potentials, structure numbered 3 is much slower than that of structure numbered 4.
Which of the following explains why this is? See attached pic for the diagram
Select one:
a. Structure number 3 has a larger diameter than structure number 4.
b. Structure number 4 does not have myelin sheaths.
c. Structure number 3 does not have myelin sheaths.
d. Structure number 4 has a larger diameter than structure number 2.


27. When a single photon from a source of light hits the retina in the eye, it triggers a signal that travels along the optic nerve to the occipital lobe of the brain.
The interaction of a photon with the photoreceptors in the retina first causes the movement of sodium ions into a sensory neuron. What happens after the movement of sodium ions?
Select one:
a. Sodium ions move out of a sensory neuron.
b. Potassium ions move into an interneuron.
c. Potassium ions move out of a sensory neuron.
d. Sodium ions move into an interneuron.
my answer is c but not sure if its correct or not

Attached file
Thumbnail(s):
You must login or register to gain access to this attachment.
Read 407 times
4 Replies

Related Topics

Replies
wrote...
Educator
2 years ago
28. A neuron was isolated from structure number 3 in the diagram above. When comparing the velocity of action potentials, structure numbered 3 is much slower than that of structure numbered 4. Which of the following explains why this is? See attached pic for the diagram Select one: a. Structure number 3 has a larger diameter than structure number 4. b. Structure number 4 does not have myelin sheaths. c. Structure number 3 does not have myelin sheaths. d. Structure number 4 has a larger diameter than structure number 2.

I believe it's c. Structure number 3 does not have myelin sheaths.
Post Merge: 2 years ago

The next one is a tough one for me:

https://videos.homeworkclinic.com/watch/98/neuron-type-animation/
https://videos.homeworkclinic.com/watch/227/the-nerve-impulse/

Given what I take from these two videos, I feel the answer should be D, but I don't understand what they're asking to be honest. Because the flow goes from sensory > interneuron > motor neuron.

You can decide on this. I see what you mean by choosing (C), yes potassium depolarizes the cell by coming out of the neuron, but is this what they're asking?
wrote...
5 months ago
Thanks
wrote...
A month ago
TY :)
wrote...
A month ago
Thank you so much
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  113 People Browsing
 230 Signed Up Today
Related Images
 2069
 68
Your Opinion
Which of the following is the best resource to supplement your studies:
Votes: 163