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HLSC 120 - Human Anatomy > Chapter 8 - Pelvis > Flashcards

Chapter 8 - Pelvis Flashcards

1
Q

How many bones make up the adult pelvis?

A

4 bones:
-sacrum
-coccyx
-right and left ossa coxae

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2
Q

Function of the Pelvis

A

-protect and support the viscera in the inferior part of the ventral body cavity (bladder, sex organs, fetus)
-support the weight of the body from the vertebral column

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3
Q

Pelvic Girdle

A

refers to the right and left ossa coxae only

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4
Q

Coxal (Hip) Bone

A

consists of three bones that fuse together:
-ilium
-ischium
-pubis

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5
Q

Pubic Symphysis

A

-joins the two coxal bones together ANTERIORLY
-fibrocartilage

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6
Q

Sacroiliac Joints

A

-join the hip bones and the sacrum together POSTERIORLY

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7
Q

The Ilium

A

-largest of the three hip bones
-forms the superior part of the hip bones

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8
Q

Ala of the Ilium

A

-superior fan shaped portion

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9
Q

Body of the Ilium

A

-lower portion of the ilium

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10
Q

Acetabulum of the Ilium

A

-socket where the femur articulates to form the hip joint

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11
Q

Iliac Crest

A

Hip Pointer

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12
Q

Greater Sciatic Notch

A

Where the sciatic nerve passes through

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13
Q

Gluteal Lines

A

-muscles attachment for the trunk, hip and thigh

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14
Q

Iliac Tuberosity

A

-upper thickened rough portion of the ilium
-attachment site for the posterior sacroiliac ligaments

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15
Q

Auricular Surface of the Ilium

A

-ear shaped area of the ilium

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16
Q

Arcuate Line

A

-bony ridge located on the inner medial surface

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17
Q

Iliac Fossa

A

-concave inner surface of the ilium

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18
Q

Ischium

A

-inferior and posterior part of the hip bone

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19
Q

Ischial Tuberosity

A

the part that meets the chair when you are sitting

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20
Q

Pubis

A

-inferior and anterior part of the hip bone

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21
Q

Inferior and Superior Rami

A

-inferior meets with ischium and superior meets with ilium
-join together to create acetabulum/hip socket

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22
Q

Pelvic Brim

A

a line from the sacral promontory to the upper part of the pubic symphysis

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23
Q

False/greater Pelvis

A

-lies above the pelvic brim
-contains no pelvic organs except when the urinary bladder is full, lower intestines, ovaries, uterus

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24
Q

True/lesser Pelvis

A

-bony pelvis inferior to the pelvic brim
-has inlet, outlet, cavity
-contains rectum, sex organs

25
Q

Pelvic Axis

A

-the path of the baby during birth

26
Q

Sacral Promontory

A

the part that articulates with the spine

27
Q

Female Pelvis

A

-wider and shallower
-pubic arch is greater than 100 degrees
-more space in the true pelvis
-pelvic brim is more oval
-structure is light and thin
-obturator foramen is oval
-iliac crest is less curved
-ilium is shorter
-sciatic notch is wider angle

28
Q

Male Pelvis

A

-bones are larger and heavier
-pelvic inlet is smaller and heart shaped
-pubic arch is less than 90 degrees
-structure is heavy and thick
-obturator foramen is round
-iliac crest is more curved
-ilium is taller
-sciatic notch is more acute

29
Q

Muscles of Coxal Joint and Thigh

A

-originate from pelvic girdle and vertebral column
-insert on various places on the femur
-most are massive muscles
-are divided into the anterior, posterior, and medial groups

30
Q

Functions of the Muscles

A

-stabilize the hip joint
-provide support for the body during locomotion

31
Q

I: Anterior Group of Muscles (need to know O and I)

A

flexors:
-illiacus
-psoas major
-sartorius
-rectus femoris

32
Q

II: Posterior Gluteal Mucles

A

extensors, abductors, rotators
-gluteus maximus
-gluteus medius
-gluteus minimus

33
Q

III: Medial Muscles of the Thigh

A

adductors
-adductor magnus
-adductor longus
-adductor brevis
-gracilis
-pectineus

34
Q

IV: Deep Lateral Thigh Muscles

A

-lateral rotator muscles of the hip joint over the posterior aspect
-piriformis
-superior and inferior gemelius
-obturator internus
-obturator externus
-quadratus femoris

35
Q

V: Lateral Group (need to know O and I)

A

-tensor fascie latae

36
Q
  1. Iliacus (group I flexors)
A

O: iliac fossa of the ilium
I: Lesser trochanter if the femur
-flexes and rotates thigh laterally

37
Q
  1. Psoas Major (group I flexors)
A

-major and minor
O: transverse process & body of lumbar vertebrae
I: Lesser trochanter
-flexes and rotates thigh laterally

38
Q
  1. Sartorius (group I flexors)
A

O: Anterior Superior Illiac Spine
I: Medial surface of body of the tibia
-the longest flexor and rotators muscle of the thugh
-flexes, abducts, and rotates the leg medially

39
Q
  1. Rectus Femoris (group I flexors)
A

O: Anterior Inferior Illiac Spine
I: Tibial Tuberosity
-extends and flexes thigh at a hip joint

40
Q
  1. Gluteus Maximus (group II extensors and abductors)
A

-roundness of the buttocks
-powerful hip extensor and lateral rotators

41
Q
  1. Gluteus Medius and Minimus (group II extensors and abductors)
A

-deeper
-originate from ilium
-abduct and medially rotate the thigh at the hip joint

42
Q

Group III Medial Adductors

A

-adductors of the hip
-some aid in hip flexion
-have a common origin on the pubic bone
-most insert on shaft of the femur

43
Q
  1. Adductor Magnus (group III adductors)
A

-largest
-deep to the other adductors
-adduct, rotate, and extend thigh at hip joint

44
Q
  1. Adductor Longus (group III adductors)
A

-near pubic symphyses
-adducts, rotates, and flexes the thigh at the hip joint

45
Q
  1. Adductor Brevis (group III adductors)
A

-located in ramus and body of pubis
-adducts, rotates, and flexes thigh

46
Q
  1. Gracilis (group IIL adductors)
A

-medial muscle
-flexes knee and leg

47
Q
  1. Pectineus (group III adductors)
A

-adduct and flex thigh at the hip joint

48
Q

Group IV Muscles

A

-all rotators and abductors that rotate the thigh laterally

49
Q

Tensor Fasciae Latae (group V muscle)

A

O: Iliac crest/spine
I: Tibia by the way of iliotibial tract
-flexes and abducts thigh medially at the hip joint

50
Q

Lumbar Plexus (L1-L5)

A

-forms medial and lateral plantar nerves

51
Q

Cutaneous Innervation

A

-calf of the leg
-plantar surface of the foot

52
Q

Motor Innervation

A

-posterior thigh and leg muscles
-intrinsic muscles of the foot

53
Q

Femoral Nerve

A

-L2-L4
-thigh, leg, and foot
-posterior division of the lumbar plexus
-innervates:
-anterior and medial portion of the thigh
-medial side of the leg and foot

54
Q

Obturator Nerve

A

-L2-L4
-only thigh
-anterior division of the lumbar plexus
-innervates:
-medial and adductors muscles of the thigh

55
Q

Femoral Nerve Motor Innervation

A

-quadriceps femoris
-iliopsoas
-sartorius
-pectineus

56
Q

Femoral Nerve Cutaneous Innervation

A

-anterior thigh
-inferomedial thigh
-medial side of the leg
-most medial aspect of the foot

57
Q

Obturator Nerve Motor Innervation

A

-adductors
-gracillis
-pectineus

58
Q

Obturator Nerve Cutaneous Innervation

A

-superomedial thigh

HLSC 120 - Human Anatomy (9 decks)

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