Hi I have just drawn a picture of the eye to label the origin, insertion and motor point.
Am I right in saying that where the muscle meets the sphenoid bone is the origin and at the other end, the eye, is the insertion?
Also where the optic nerve goes through the superior oblique(?) is this the motor point?
Any help would be grestfully appreciated..:eek::eek::eek:
Thanks
XxX
RE: Am I right? Please help...x A&P
Hi Ibizaheaven (nice name!)
I've never studied the eye but here's my best shot based purely on what I can find in my text books.
The origin's of the eye muscles would be on thebones surrounding the optic canal and the insertions would beon the eye ball.
I don't think the optic nerve doesgo through the superior oblique(SO). The SO originates from the Sphenoid around the Optic Canal and is innervated by the Trochlear Nerve (IV). I would suggest the motor point is probably the point on the muscle tissue where the motor nerve connects to innervate the muscle.
I hope that helps. Just out of interest what course are you on?
Adam
RE: Am I right? Please help...x A&P
Hi Adam
Thanks for your reply it was very helpful. I am currently studying A&P VTCT level 3.
We had our first exam before half term after3 lessons of which I had missed the first 2 so I spent a week catching up on Cells & Tissues and the Skeletal system. It was hard going for me, the only exam I have done before ever, was my driving test!! But I am thoroughly enjoying all the hard work. And I must say so far I think the course is really good if a little rushed. The week of the exam, we did the exam, had a little break then only had the last hour to go through the Muscular system, so it seems a little rushed and I thank god for the internet and google images/videos otherwise I would have had to spend a fortune on books - I do have some but I would have needed alot more without the internet.
So I go back to college this week to learn about the nervous system - the one I have been dreading... And to get the results of my first little exam so please wish me luck!!!
xxx
RE: Am I right? Please help...x A&P
Wow!
The questions you ask about innervations are quite advanced, especially in relation to the eye muscles. I'm wondering if you might be making things a bit more complicated than you need at this stage, especially if you are a little bit behind on the course. It might beworth your whileto have a word with your tutor to make sure your not going into more depth than is required. This is a trapI regularly fall into which is fine so long as you have the time, but a real pain in the backside if you don't!
Anyway good luck with everything.
Adam
RE: Am I right? Please help...x A&P
Hi Adam
I had to draw and label a muscle with the origin, insertion and motor points on. I decided to draw an eye as it fascinates me. Once I had started drawing it I realised I could have probably picked a better and more easier muscle to draw.
And I am pleased to say I am not behind at all, I caught up in time for the first exam. I worked like a dog for that week. I had headaches and everything. Not something I am used to but I did enjoy having to do so much work.
Thanks for your comments, they are appreciated.
x