Anatomy Midterm 2 - Lecture 10.docx

14 Pages
Unlock Document

Western University
Anatomy and Cell Biology
Anatomy and Cell Biology 3319
Michele Barbeau

Anatomy Lecture Dec 3, 2013 – Abdominal Muscles and Bony Pelvis • • ribs attached to sternum via costal cartilage • false ribs aren’t directly attached to sternum, theyre attached to costal cartilage • floating ribs aren’t attached at all o theyre still false ribs though o sacrum articulates with pelvis • Bony Pelvis • Between ribs and stomach  Stomach, kidneys, intestines, liver, gall bladder, pelvic organs (bladder, uterus) o Abdominal contents are only protected by abdominal wall, no ribs  Muscle  Quite soft • pelvis made of 3 separate bones fused together and articulates with sacrum • axial skeleton o muscles forming hip joint • ilium o large bone • ischium • pelvis • iliac crest • anterior superior iliac spine o good landmark o feel it quite easily on people o inguinal ligament  red line • hip joint is ball and socket joint o acetabulum • pubic crest o easily palpable • sacroiliac joint o this will give athletes problems at times • medial view • to inner surface • ilium has wing like area • called Ala • bowl shaped area called iliac fossa – muscles attach here • anterior superior iliac spine • greater sciatic notch  becomes foramen - iscial tuberosity - articulates with - joint fuses with symphyseal surface allows baby to pass more easily not fused joint - ball of hip joint goes into acetabulum - ischial spine - forms foramen when fused • sacrotuberus ligament – opening where vessels and nerves pass through • fan out and supply lower limb • tilt of pelvis • quite tilted • anatomical position o lower lumbar and sacral joint point out o sacral promontory • arcuate line o marks opening of pelvis inlet o inlet – the big hole in the middle of pelvis o outlet – important for child bearing  if baby has big head and cant fit through outlet, then cesarian must be done • male pelvis differs from female pelvis o for child birth o distinguishing  easiest – look at pubic rami – angle that’s created is wider for females  when you look at pelvic inlet, is much wider in female, and oval shaped • in male, its heat shaped  pelvic outlet – in female is wider, ischial spines are farther apart  differences in gender • • pelvic inlet is more heart shaped • rami much wider • pelvic inlet is larger for female • anterior superior iliac crest o point for ligament • Anterior Neck Muscle • o • Sternocliedomastoid muscle o Flexes neck o Muscle named on where it is found and what it attaches to o Sterno – sternum o Cleido – clavicle o Mastoid – mastoid process o Attachment to clavicle going to mastoid process and sternum going to mastoid process o Used to move head down bilaterally, or turning head to opposite side of muscle if unilateral  Also laterally bending head (like confused head tilt) o Bilateral contraction – flexes the neck o Unilateral contraction  Rotates head towards opposite shoulder (contralateral)  Lateral flexes head to the same side (ispilateral) • Functions of Abdominal Wall Muscles • • o 1. Support for the anterolateral wall  abdominal wall o 2. Flexion and rotation of the trunk  and laterally bend o 3.Compresses abdominal contents –  allow contents of abdominal cavity to be compressed  during inhalation  lifting diaphragm up
More Less

Related notes for Anatomy and Cell Biology 3319

Log In


Don't have an account?

Join OneClass

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

Sign up

Join to view


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.