Class Notes (835,628)
Canada (509,297)
Health Sciences (2,082)
Lecture

The Muscular System - Trunk Muscles.docx

2 Pages
143 Views
Unlock Document

Department
Health Sciences
Course
Health Sciences 2300A/B
Professor
Jamie Melling
Semester
Fall

Description
The Muscular System ­ Muscles of the Trunk Deep back muscles ­ Erector Spinae ­ ‘I like standing’ o Iliocostalis o Longissiumus o Spinalis ­ confusion about regional parts of the muscle.  Iliocostalis ­ Attachments on ilium and costal region (ribs). From ilium it stretches all the way  up to the head region. Longissiumus  ­ Starts at illum as well, stretches up to transverse processes of vertebrae.  Spinalis ­ Originates at pelvis (in general) attaches to spinous processes of vertebrae.  Diamond­shaped fascia in pelvic area ­ called thoracodorsal fascia. Band that sits in the  small of the back. Muscles attach to this fascia ­ most notable is the latissimus dorsi.  ­ Vertebrae supports its self for the most part, so muscles of the back do not have to  work very hard to keep bone in place. However, with movement ­ muscles work  very hard to ensure nothing gets out of place. Work quickly to compensate for  quick movements ­ easily to injure yourself ­ experience pain.  Innervation of Muscle  Ventral ­ efferent ­ information going out ­ responsible for motor. Dorsal ­ afferent ­ information coming in ­ responsible for sensory.  Move into wahts classed a rami ­ consists of both sensory and motor information. Most  motor info is transmitted through ventral rami. The Dorsal rami innervates the  iliocostalis.  Deepest Back  ­ Transversospinalis muscles ­ small, intricate. Allow for much finer movements of  the spinal column. Organized by attachments.  ­ Intertransversarius ­ inbetween transverse processes. ­ From thoracic vertebra off of one spinous 
More Less

Related notes for Health Sciences 2300A/B

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit