Reflex Actions Flashcards
the nerve pathway of a reflex is called a…
finish the sentence
reflex arc
what is a reflex action step-by-step?
First, the stimulus is detected by a receptor organ.
Next, the receptor organ sends impulses through the dorsal root.
Next, the impulses pass along the relay neurone which connects to the motor neurone.
After that, the motor neurone emerges from the spinal cord through the ventral root.
Lastly, the motor neurone sends impulses back out to muscles.
the brain gets informed about the stimulus through…
finish the sentence
the spinal cord
the middle of the spinal cord is called the…
finish the sentence
grey matter
the grey matter consists mainly of…
finish the sentence
nerve cell bodies that give it a grey colour.
the outer part of the spinal cord is called…
finish the sentence
the white matter
the white matter looks whiter than the grey matter because…
finish the sentence
it has may axons with thier myelin sheaths.
in the brain…
finish the sentence
the grey matter is on the outside and the white matter on the inside.
