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anat unit3 > the pelvic girdle and muscles > Flashcards

the pelvic girdle and muscles Flashcards

Unite 3 the abdomen and pelvis

1
Q

What four bones make up the adult pelvis?

A

Sacrum
Coccyx
Right os coxae
Left os coxae

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2
Q

Which of the bones of the pelvis make up the pelvic girdle?

A

Ossa coxae (plural)
Os Coxa (singular)

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3
Q

What are two anatomical terms for what is commonly called the “hipbone”?

A

Os coxae
Innominate bone

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4
Q

With what features of the sacrum does the pelvic girdle articulate?

A

Left and right auricular (articular) surfaces

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5
Q

With what feature of the pelvic girdle does the head of the femur articulate?

A

Acetabulum

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6
Q

What is the largest and most superior of the three bones of the os coxae?

A

Ilium

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7
Q

What is the wing-shaped portion of the ilium?

A

Ala

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8
Q

What depression lies on the medial side of the ilium?

A

Iliac fossa

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9
Q

What features on the lateral side of the ilium are formed by the gluteal muscles?

A

Anterior, posterior, and inferior gluteal lines

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10
Q

What ear-shaped feature of the ilium articulates with the sacrum?

A

Auricular surface of the ilium

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11
Q

What is the superior ridge of the ilium?

A

Iliac crest

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12
Q

What is the anterior termination of the superior ridge of the ilium?

A

Anterior superior iliac spine

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13
Q

What is the posterior termination of the superior ridge of the ilium?

A

Posterior superior iliac spine

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14
Q

What features lies inferior to the ala of the ilium anteriorly and posteriorly?

A

Anterior inferior iliac spine
posterior inferior iliac spine

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15
Q

Through what part of the ilium does the sciatic nerve pass?

A

Greater sciatic notch

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16
Q

What is the most inferior bone of the os coxae?

A

Ischium

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17
Q

What is the prominent triangular projection of bone posterior to the acetabulum?

A

Ischial spine

18
Q

What is the indent that is formed by the ischial spine?

A

Lesser sciatic notch

19
Q

What rough projections of the pelvic girdle bear the weight of the body in the sitting position?

A

Ischial tuberosity

20
Q

What portion of the ischium fuses with the pubis medially?

A

Ischial ramus

21
Q

What is the most anterior of the three bones forming the os coxae?

22
Q

What part of the pubis articulates with the pubis on the opposite side of the body?

23
Q

What part of the pubis fuses with the ischium?

A

Inferior ramus

24
Q

What part of the pubis originates at the anterior margin of the acetabulum?

A

Superior ramus

25
Q

What opening in the os coxae is formed by the pubis and ischium?

A

Obturator foramen

26
Q

With what feature of the pubis does the inguinal ligament attach?

A

Pubic tuberacle

27
Q

What is the articulation between the bodies of the pubic bones?

A

Pubic symphysis

28
Q

On what feature of the pubis does a comb-like muscle originate?

A

Pectineal line

29
Q

What feature of the pelvis extends from the pubic crest, pectineal line, and arcuate line to the rounded inferior edge of the sacral ala and sacral promontory?

A

Pelvic brim

30
Q

What portion of the pelvic cavity lies inferiorly and forms a deep bowl?

A

True pelvis

31
Q

What portion of the pelvic cavity lies superiorly and is enclosed by the ala of the iliac bones?

A

False pelvis

32
Q

What is the opening surrounded by the pelvic brim?

A

Pelvic inlet

33
Q

What opening of the pelvic cavity is bordered by the coccyx, the ischial tuberosities, and the inferior border of the pubic symphysis?

A

Pelvic outlet

34
Q

Sex differences in the pelvis

A

pubic angle

35
Q

Identify psoas major

A

origin: transverse processes of L1-L5
insertion: lesser trochanter of femur
Action: Flexes hip. rotates thigh laterally. Flexes vertebral column

36
Q

Identify Iliacus

A

Origin: Iliac fossa
Insertion: Lesser trochanter of femur
Action: Flexes hip. Rotates thigh laterally

37
Q

By what name are the iliacus and psoas major referred to after they pass deep to the inguinal ligament?

38
Q

Identify Gluteus maximus

A

Origin: Iliac crest, dorsal surface of sacrum and coccyx
Insertion: Gluteal tuberosity and iliotibial tract
Action: Extends hip. Rotates thigh laterally

39
Q

Identify Gluteus medius

A

Origin: upper half of lateral surface of the ilium
Insertion: Lateral surface of greater trochanter
Action: abducts hip, rotates thigh medially

40
Q

Identify Gluteus minimus

A

Origin: Lower half of lateral surface of ilium
Insertion: Anterior surface of greater trochanter
Action: Abducts hip, rotates thigh medially

41
Q

Identify Piriformis

A

Origin: Anterior of the sacrum
Insertion: Superior border of greater trochanter
Action: laterally rotates extended hip and abducts flexed thigh

anat unit3 (8 decks)

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