Podcast
Questions and Answers
Where is the ischium located in the hip bone?
Where is the ischium located in the hip bone?
- Inferior and posterior part (correct)
- Superior and anterior part
- Superior and posterior part
- Inferior and anterior part
What is the most prominent feature of the ischium?
What is the most prominent feature of the ischium?
- Pubic crest
- Pubic tubercle
- Ischial tuberosity (correct)
- Superior ramus
Which part of the hip bone is described as the inferior and anterior part?
Which part of the hip bone is described as the inferior and anterior part?
- Pubic tubercle
- Pubis (correct)
- Ischium
- Ilium
What divides the entire pelvis into a true or false pelvis?
What divides the entire pelvis into a true or false pelvis?
Which part of the hip bone lies above the pelvic brim line?
Which part of the hip bone lies above the pelvic brim line?
What organs are NOT contained in the false/greater pelvis?
What organs are NOT contained in the false/greater pelvis?
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Which pelvis shape feature distinguishes females from males?
Which pelvis shape feature distinguishes females from males?
Which muscle group provides support for the body during locomotion?
Which muscle group provides support for the body during locomotion?
What is the origin of the Sartorius muscle?
What is the origin of the Sartorius muscle?
Which muscle group is responsible for hip flexion?
Which muscle group is responsible for hip flexion?
How does the pelvic inlet shape differ between males and females?
How does the pelvic inlet shape differ between males and females?
What characterizes the subpubic angle in females?
What characterizes the subpubic angle in females?
Which muscle rotates the thigh laterally?
Which muscle rotates the thigh laterally?
Where does the Tensor fasciae latae muscle originate from?
Where does the Tensor fasciae latae muscle originate from?
Which nerve innervates the adductor muscles of the thigh?
Which nerve innervates the adductor muscles of the thigh?
Which muscle is innervated by the femoral nerve?
Which muscle is innervated by the femoral nerve?
What is the main function of the obturator nerve?
What is the main function of the obturator nerve?
Which part of the leg does the femoral nerve innervate?
Which part of the leg does the femoral nerve innervate?
Which nerve passes through the greater sciatic notch?
Which nerve passes through the greater sciatic notch?
What structure unites both os coxae anteriorly?
What structure unites both os coxae anteriorly?
What is the main function of the Tensor fasciae latae muscle?
What is the main function of the Tensor fasciae latae muscle?
Where does the Rectus femoris muscle originate?
Where does the Rectus femoris muscle originate?
Which muscle is known as the longest flexor and rotator muscle of the thigh?
Which muscle is known as the longest flexor and rotator muscle of the thigh?
What is the function of the Vastus lateralis muscle?
What is the function of the Vastus lateralis muscle?
Which nerves form the medial and lateral plantar nerves and provide cutaneous innervation to the calf of the leg?
Which nerves form the medial and lateral plantar nerves and provide cutaneous innervation to the calf of the leg?
Which nerve provides motor innervation to posterior thigh and leg muscles, as well as intrinsic muscles of the foot?
Which nerve provides motor innervation to posterior thigh and leg muscles, as well as intrinsic muscles of the foot?
What is the insertion point of the Rectus femoris muscle?
What is the insertion point of the Rectus femoris muscle?
Which group does the Tensor fasciae latae muscle belong to?
Which group does the Tensor fasciae latae muscle belong to?
What structure divides the false pelvis from the true pelvis?
What structure divides the false pelvis from the true pelvis?
Which bone is considered a 'sitting bone'?
Which bone is considered a 'sitting bone'?
What is the origin of the iliacus muscle?
What is the origin of the iliacus muscle?
Which nerve innervates only thigh muscles?
Which nerve innervates only thigh muscles?
What is the path of a baby's birth during parturition called?
What is the path of a baby's birth during parturition called?
What is the common insertion for the anterior group of muscles that move the coxal joint?
What is the common insertion for the anterior group of muscles that move the coxal joint?
In females, what is the angle of the pubic arch?
In females, what is the angle of the pubic arch?
Which muscle is part of the anterior, medial portion of the thigh, and medial side of the leg & foot?
Which muscle is part of the anterior, medial portion of the thigh, and medial side of the leg & foot?
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
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Description
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.
