Lecture 26 – Skeletal System – Pelvic Girdle

I have one final thought about the ulna.  Distally, we find the styloid process for the wrist bones.  (Also called carpal bones; remember, the carpals can carry. This is alliteration from elementary English class.)

The carpus consists of 2 rows of 4 bones in each row.

Metacarpals – Palm – 5 bones.  The heads of the metacarpals are called knuckles.

Phalanges – 3 in fingers and 2 in each thumb.

Pelvic girdle – Pelvis means “basin” and basins carry objects!  This is a simple concept.  The pelvis consists of 3 bones, the ilium, the ischium, and the pubic bone.  All come together at the acetabulum, which means vinegar cup.  The vinegar cup or acetabulum receives the head of the femur.

Ilium

The anterior iliac spine is important for attaching ligaments.

The sacroiliac joint sometimes loosens with age and can produce intense pain.

The ischium is posterior and inferior.  We sit on our ischial tuberosities.  The obturator foramen receives blood vessels and nerves.  The outer part of the foramen is covered with connective tissue.

The pubic bone is the most anterior pelvic bone.  The two pubic bones meet in the middle at the pubic symphysis.  Symphysis means together.  (Think about a musical symphony where many instruments are played together to provide one beautiful sound.  I am sure that you recall my method for learning, which is to utilize any honest techniques to assist your memory.)  Fibrocartilage is located at the pubic symphysis.  This joint loosens during childbirth to allow for the passage of the baby.  Sometimes expectant mothers experience wobbly hips late in the pregnancy, thereby needing to rise from a sitting position slowly.  Sometimes women experience pain at this joint during pregnancy.  The body is highly capable of carrying out its natural functions.

The loosening of the pubic symphysis accounts for one of the distinct differences between women and men.  The male pelvis is narrower, heavier, and deeper.  The pelvis of a woman is wider.  Do well with this information.

 

 

 

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