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Anatomy W Lei > Pelvic Cavity > Flashcards

Pelvic Cavity Flashcards

1
Q

Pelvic cavity

A

Greater/false inlet: iliac crest, inguinal ligament, pubic symphysis
Lesser/true inlet: sacral promontory, margin of Ala, arcuate line to pubic symphysis
Pelvic floor: muscular diaphragm
Pelvic wall: bones and ligaments

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2
Q

Male vs. Female pelvis

A

Inlet- heart shape : circle
Intrapubic angle- acute : obtuse
Shape- cone : cylinder

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3
Q

Pelvic wall bones

A

Innominate and sacrum

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4
Q

Pelvic wall joints

A

Sacroiliac joint (posterior) pubic symphysis (anterior)

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5
Q

Pelvic wall ligaments

A

Sacrotuberous and sacrospinous

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6
Q

Pelvic wall muscles (2)

A

Piriformis and obturator internus

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7
Q

Orientation of innominate bones

A

4 SIS: transverse plane (S2)
ASIS and pubic symphysis: coronal place

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8
Q

Pelvic outlets around wall

A

Greater (sup and inf)/lesser sciatic foreman
Obturator canal
Gap between inguinal lig and pelvic bone

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9
Q

Greater sciatic foreman

A

Piriformis divides it into superior and inferior
Bones: ilium and ischium
Ligaments: posterior sacroiliac ligament, sacrotuberus lig, sacrospines lig

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10
Q

Lesser sciatic foreman

A

Obturator internus muscle turning as anatomic landment imaging
Bone: ischium
Ligaments: sacroiliac, sacrospinous, sacrotuberous

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11
Q

Ventral rami of spinal nerve roots

A

Lumbosacral trunk: L4-L5
Sacral spinal nerves: S1-S3

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12
Q

Sacral plexus ventral divisions (tpp)

A

Tibial nerve L4-S3
Pudendal nerve S2 - S4
Pelvic splanchnic nerve S2 - S4

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13
Q

Greater sciatic foreman crossing structures

A

Superior: superior gluteal nav
Inferior: sciatic nerve; pudendal/ inferior gluteal nav, posterior femoral cutaneous nerve, nerve to small hip ERs

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14
Q

Lesser sciatic foreman structures

A

Pudendal nav
S2, S3, S4
Internal pudendal artery

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15
Q

Pelvic diaphragm innervation

A

Pudendal nerve (S2-S4)

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16
Q

Pelvic diaphragm parts (2)

A
  1. Levator ani: puborectalis, pubococcygeus, iliococcygeus
  2. Coccygeus ligament
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17
Q

Male pelvic cavity

A

Urogenital system: urinary bladder, prostate gland, seminal vesicle
Digestive system: rectum

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18
Q

Female pelvic cavity

A

Urogenital: urinary bladder, uterus, ovaries
Digestive: rectum

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19
Q

Peritoneum in pelvic cavity: male

A

Proximal 1/3 of rectum and anterior surface of 2nd 1/3 of rectum
Superior surface of urinary bladder
Rectovesical pouch

20
Q

Peritoneal cavity in pelvis: female

A

Proximal 2/3 of anterior surface of rectum
Superior surface of urinary bladder
Most of uterus (intraperitoneal) and posterior surface of the ovary
Vesicouterine pouch and rectouterine pouch (pouch of Douglas)

21
Q

Urinary bladder: orientation/anatomy

A

Suspended by the median umbilical ligament (urachus)
Anteroinferior to parietal peritoneum
***Parietal peritoneum not fixed to anterior abdominal wall

22
Q

Urinary bladder: inside surface (2)

A

Smooth area: triangular (trigone), from opening of ureters to the internal urethral orifice
Corrugated area: detrusor muscles

23
Q

Urinary bladder

A
24
Q

Bladder and male genital system

A

Posterior inferior: prostate gland, walnut size, hypertrophy w/ aging
Posterior: seminal vesicle + ductus deferens to ampulla = ejaculatory duct
Function: nutrition support, neutralizing acidic environment

25
Q

Uterus: components

A

Uterine tube, body, cervix

26
Q

Uterine tube parts

A
27
Q

Uterus:

A
28
Q

Uterus positioning

A

Normal:
Abnormal
Clinical importance: cervical prolapse,

29
Q

Ovary

A

Primary retroperitoneal
Connected to uterine body medically
Laterally connected to one of the longest fimbria from the fimbriae of uterine tube

30
Q

Ovary: function

A

Initiates meiosis and releases secondary oocyte for fertilization
Development of embryo and fetus
End Erie

31
Q

Uterus and ovary ligaments

A

Broad ligament:
1. Mesos

32
Q

Uterus and vagina innervation

A

Anterior 1/3 of vagina: somatic only, pudendal nerve S2 -S4
Post

33
Q

Rectum

A

Distal 1/3 : Primary retroperitoneal
Distal rectum forms a straight angle

34
Q

Anus

A

Pectinate line
Internal an external sphincters
Fecal continence

35
Q

Pectinate line

A

Columnar - squamous junction

36
Q

Lymph drainage in anus

A

Above pectinate line
Below

37
Q

Anus innervation

A
38
Q

Perineum: triangles (2)

A
39
Q

Urethra: female

A

Very short, equal to males membranous part, increased infection risk

40
Q

Urethra: male (4)

A
41
Q

Sexual differences

A
42
Q

Urinary bladder phases

A

A. Filling/storage phase
B. Voiding/ micturition phase

43
Q

Bladder: filling phase

A
44
Q

Bladder: voiding phase

A
45
Q

Types of incontinence

A

Stress, urge, mixed (stress and urge), functional, overflow, transient (infection or medication)

46
Q

External genitalia: skeletal muscles

A

Ischiocaernousus and bulbospongiosus
Innervated by pudendal nerve

47
Q

External genitalia: erectile tissues

A

Corpus cavernosum” crus
Corpus

Anatomy W Lei (16 decks)

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