37 Questions
Where is the ischium located in the hip bone?
Inferior and posterior part
What is the most prominent feature of the ischium?
Ischial tuberosity
Which part of the hip bone is described as the inferior and anterior part?
Pubis
What divides the entire pelvis into a true or false pelvis?
Sacral promontory to the upper part of the pubic symphysis
Which part of the hip bone lies above the pelvic brim line?
False/greater pelvis
What organs are NOT contained in the false/greater pelvis?
Rectum and sex organs
67000
Superior and inferior rami and body.
Which pelvis shape feature distinguishes females from males?
Wider and shallower shape in females
Which muscle group provides support for the body during locomotion?
Anterior group of muscles
What is the origin of the Sartorius muscle?
Transverse process & body of lumbar vertebrae
Which muscle group is responsible for hip flexion?
Anterior group
How does the pelvic inlet shape differ between males and females?
Heart-shaped in males and wider in females
What characterizes the subpubic angle in females?
Greater than 100°
Which muscle rotates the thigh laterally?
Sartorius
Where does the Tensor fasciae latae muscle originate from?
Iliac fossa of ilium
Which nerve innervates the adductor muscles of the thigh?
Obturator nerve
Which muscle is innervated by the femoral nerve?
Rectus femoris
What is the main function of the obturator nerve?
Thigh adduction
Which part of the leg does the femoral nerve innervate?
Anterior side
Which nerve passes through the greater sciatic notch?
Sciatic nerve
What structure unites both os coxae anteriorly?
Pubis symphysis
What is the main function of the Tensor fasciae latae muscle?
Flexes and abducts the thigh medially at the hip joint
Where does the Rectus femoris muscle originate?
Anterior superior iliac spine
Which muscle is known as the longest flexor and rotator muscle of the thigh?
Iliopsoas
What is the function of the Vastus lateralis muscle?
Extends and flexes the thigh at the hip joint
Which nerves form the medial and lateral plantar nerves and provide cutaneous innervation to the calf of the leg?
Lumbar Plexus
Which nerve provides motor innervation to posterior thigh and leg muscles, as well as intrinsic muscles of the foot?
Lumbar Plexus
What is the insertion point of the Rectus femoris muscle?
Tibial tuberosity
Which group does the Tensor fasciae latae muscle belong to?
Lateral Group
What structure divides the false pelvis from the true pelvis?
Pelvic brim
Which bone is considered a 'sitting bone'?
Ischium
What is the origin of the iliacus muscle?
Iliac fossa
Which nerve innervates only thigh muscles?
Obturator nerve
What is the path of a baby's birth during parturition called?
Pelvis axis
What is the common insertion for the anterior group of muscles that move the coxal joint?
Iliotibial tract
In females, what is the angle of the pubic arch?
More than 100 degrees
Which muscle is part of the anterior, medial portion of the thigh, and medial side of the leg & foot?
Sartorius muscle
Study Notes
Superior Iliac Spine
- Origin of the longest flexor and rotator muscle of the thigh
- Flexes, abducts, and rotates the leg medially
Rectus Femoris
- Origin: Anterior inferior iliac spine
- Insertion: Tibial tuberosity
- Extends and flexes the thigh at the hip joint
Tensor Fasciae Latae
- Origin: Iliac crest/spine
- Insertion: Tibia by way of iliotibial tract
- Flexes and abducts the thigh medially at the hip joint
Innervation of the Pelvic Girdle: Lumbar Plexus
- Forms medial and lateral plantar nerves
- Provides cutaneous innervation to the calf of the leg and plantar surface of the foot
- Provides motor innervation to posterior thigh and leg muscles and intrinsic muscles of the foot
Pelvic Girdle: Lumbar Plexus
- Formed by L1-L5
- Femoral nerve (thigh, leg, and foot)
- Obturator nerve (thigh only)
Gluteal Muscles of the Buttock
- Attach to the hip bone
- Include gluteus maximus, gluteus medius, and gluteus minimus
Pelvis
- Composed of four bones: ilium, ischium, and pubis
- The ischium is the smallest bone of the os coxae
- The ilium is the largest bone of the os coxae
- The pubis is the inferior and anterior part of the hip bone
True and False Pelves
- Pelvic brim: a line from the sacral promontory to the upper part of the pubic symphysis
- False or greater pelvis: lies above the pelvic brim
- True or lesser pelvis: lies below the pelvic brim and has an inlet, an outlet, and a cavity
- Contains the rectum and sex organs in both sexes
Comparing Male and Female Pelves
- Female pelvis: wider and shallower
- Male pelvis: larger and heavier, with a smaller inlet and heart-shapedpelvic inlet
- Female subpubic angle: greater than 100°
- Male subpubic angle: less than 90°
Muscles That Move the Coxal Joint/Thigh
- Originate from the pelvic girdle and vertebral column
- Insert on various places on the femur
- Stabilize the hip joint and provide support for the body during locomotion
- Divided into anterior, posterior, and medial groups
Anterior Group of Muscles
- Flexor muscles of the thigh
- Include iliacus, psoas major, sartorius, and rectus femoris
Explore muscle attachment sites for the gluteal muscles in the buttock and the anatomy of the hip bones including the Ilium, Ischium, and Pubis. Learn about the ischial tuberosity, pubic crest, pubic tubercle, and distinctions between False (Greater) and True (Lesser) Pelves.
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