Label the intrinsic back muscles splenius capitis splenius cervicis erector

Label the intrinsic back muscles splenius capitis

This preview shows page 16 - 20 out of 30 pages.

Label the intrinsic back muscles : splenius capitis, splenius cervicis, erector spinae muscle group, and transversospinales muscle group. Suboccipital Region . Deep in the upper posterior cervical region at the base of the skull is the suboccipital region, a muscle compartment that contains four small, deep muscles that attach the axis and atlas to each other and to the skull’s occipital bone. There are two suboccipital regions, one on each side. Suboccipital muscles include: rectus capitis 62 © 2011 Shirley J. Wright, Ph.D.
Image of page 16

Subscribe to view the full document.

posterior major, rectus capitis posterior minor, obliquus capitis inferior and obliquus capitis superior . They are innervated by the posterior ramus of C1 (called suboccipital nerve ) and extend the head at the atlanto-axial joint. They also aid in rotation of the head to the ipsilateral side on which the muscle is located. Suboccipital muscles function in allowing very fine movements of the head. Their boundaries form the walls of the suboccipital triangle that is clinically important because it contains critical structures including the vertebral artery and vein, and suboccipital nerve (C1). Search in Primal Pictures: ? embeddedcode=6DEC40 .The screen should show an image of the cervical spine and base of head. Move the mouse over any region of the image to identify structures. Use the ◄► arrows to see the different muscle layers. LABORATORY EXERCISE 4.1 Types of Vertebrae For this exercise, work as a group with your lab table partners. See images at lab table. 63 © 2011 Shirley J. Wright, Ph.D. Label the structures: 1 2 3 4 5 6 7 8 9
Image of page 17
1. Obtain a set of disarticulated bones, isolate the vertebrae, group them according to vertebra type and assemble them into a vertebral column. 2. Select 1-2 vertebrae of each type listed below, identify their components, and record distinguishing characteristics that allow them to be easily recognized. CERVICAL VERTEBRAE: Distinguishing Characteristic Vertebral Foramen:__________________________________________________________ Vertbral Body:______________________________________________________________ Spinous Process:____________________________________________________________ Transverse Process:_________________________________________________________ Other:_____________________________________________________________________ THORACIC VERTEBRAE: Vertebral Foramen:__________________________________________________________ Vertebral Body:_____________________________________________________________ Spinous Process:____________________________________________________________ Transverse Process:_________________________________________________________ Other:_____________________________________________________________________ LUMBAR VERTEBRAE: Vertebral Foramen:__________________________________________________________ Vertebral Body:_____________________________________________________________ Spinous Process:____________________________________________________________ Transverse Process:_________________________________________________________ Other:_____________________________________________________________________ SACRUM: General features:____________________________________________________________ COCCYX: General features:____________________________________________________________ LABORATORY EXERCISE 4.2 Joints of Vertebral Column The vertebral column has several joints. Examine the articulated and disarticulated skeletons to locate each joint. Provide the type of joint (e.g., pivot) and include its location. 64 © 2011 Shirley J. Wright, Ph.D.
Image of page 18

Subscribe to view the full document.

Table 4.1. Major Joints of Vertebral Column Name of Joint Joint Type Location/Component of Vertebra Atlanto-axial Joint Atlanto-occipital Joint Costovertebral Joint Craniovertebral Joint Intervertebral Joint Sacroiliac Joint Uncovertebral Joint Zygapophysial Joint LABORATORY EXERCISE 4.3 Movements of the Vertebral Column Between the vertebrae are intervertebral discs and intervertebral joints which permit movement of the back. What movements are possible for the back and the head?
Image of page 19
Image of page 20
  • Spring '11
  • Masthay
  • Vertebra, Bones of the torso

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Ask Expert Tutors You can ask 0 bonus questions You can ask 0 questions (0 expire soon) You can ask 0 questions (will expire )
Answers in as fast as 15 minutes