jamesb1799
Badges: 6
Rep:
?
#1
Report Thread starter 11 months ago
#1
We need to label this diagram as part of our homework. I’ve looked in my notes from class, the PowerPoint the teacher used and in the textbook and I still can’t find it. Please can someone help? https://m.imgur.com/a/uTxdOdl
Last edited by jamesb1799; 11 months ago
0
reply
macpatgh-Sheldon
Badges: 18
Rep:
?
#2
Report 11 months ago
#2
Name:  Spinal nerve diag edited.jpg
Views: 14
Size:  23.9 KB

1. "dorsal" refers to the top of an animal when lying flat on its belly e.g. the dorsal fins of a fish are the ones on top; in us humans, "dorsal" refers to our backs when we are lying on our tummies [as we normally stand on two legs]. The "dorsal" root of a spinal nerve is its sensory branch; it unites with the ventral root (containing motor neurones) to form the "whole" spinal nerve [a nerve originating in the spinal cord].

2. "ventral" refers to the bottom part of an animal lying flat - in ourselves it is the surface that includes our chest and tummy.

3. Because cell bodies are rounded in shape [cf axon is linear] so where cell bodies are located, there is a lump called a ganglion - in the brain, such areas are called "grey matter" whereas the parts where there are axons appear white (due to sheath of myelin) so white matter.

Hope this helps!
M (specialist biology tutor)
1
reply
jamesb1799
Badges: 6
Rep:
?
#3
Report Thread starter 11 months ago
#3
Thanks so much
(Original post by macpatgh-Sheldon)
Name:  Spinal nerve diag edited.jpg
Views: 14
Size:  23.9 KB

1. "dorsal" refers to the top of an animal when lying flat on its belly e.g. the dorsal fins of a fish are the ones on top; in us humans, "dorsal" refers to our backs when we are lying on our tummies [as we normally stand on two legs]. The "dorsal" root of a spinal nerve is its sensory branch; it unites with the ventral root (containing motor neurones) to form the "whole" spinal nerve [a nerve originating in the spinal cord].

2. "ventral" refers to the bottom part of an animal lying flat - in ourselves it is the surface that includes our chest and tummy.

3. Because cell bodies are rounded in shape [cf axon is linear] so where cell bodies are located, there is a lump called a ganglion - in the brain, such areas are called "grey matter" whereas the parts where there are axons appear white (due to sheath of myelin) so white matter.

Hope this helps!
M (specialist biology tutor)
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

With HE fairs postponed, would a virtual HE fair be useful?

Yes (103)
60.95%
No (66)
39.05%

Watched Threads

View All