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Biomedical Human Anatomy > TBL 3 reproductive > Flashcards

TBL 3 reproductive Flashcards

1
Q

Pelvic cavity

A

-surrounded by the pelvic girdle

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2
Q

Perineum

A

-inferior to the pelvic diaphragm

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3
Q

Greater pelvis

A
  • contains inferior abdominal viscera

- superior portions of the pelvic girdle

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4
Q

Lesser pelvis

A

-inferior portion of the pelvic girdle

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5
Q

Boundaries of pelvic cavity

A
  • Inferior: pelvic diaphragm
  • Posterior: sacrum and coccyx
  • Anterior: pubic bones and symphysis
  • Lateral: hip bones and obturator internus m.
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6
Q

Pelvic girdle orientation

A

-ASIS and pubic tubercles are in the same anterior plane

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7
Q

Pelvic inlet

A

-circular opening between abdominal and pelvic cavity

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8
Q

Pelvic outlet

A
  • diamond shaped area
  • parts of the urogenital and digestive tract exit the pelvis here
  • area below/inferior this area is the perineum
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9
Q

Sacrotuberous ligament

A
  • posterior ileum/lateral sacrum and coccyx to ischial tuberosity
  • forms the large sciatic foramen
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10
Q

Sacrospinous ligament

A
  • lateral sacrum/coccyx to ischial spine

- divides the large sciatic foramen into the greater and lesser sciatic foramen

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11
Q

Obturator membrane

A
  • covers the obturator foramen

- obturator muscles attach here

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12
Q

Greater sciatic foramen

A
  • above the ischial spine

- sacrospinous ligament and sacrotuberous ligament form this

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13
Q

Nerves going through greater sciatic foramen

A
  1. superior gluteal n.
  2. sciatic n.
  3. inferior gluteal n.
  4. posterior femoral cutaneous n.
  5. N. to quadratus femoris m.
  6. pudendal n. (out)
  7. N. to obturator internus m. (out)
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14
Q

Lesser sciatic foramen

A

-below the ischial spine

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15
Q

Nerves going through lesser sciatic foramen

A
  1. pudendal n. (into perineum)

2. N. to obturator internus m. (into pelvis)

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16
Q

Nerves going through obturator canal

A

-obturator n.

17
Q

Obturator membrane

A

-muscle attachment site

18
Q

Muscles of the pelvis

A
  1. piriformis m.
  2. obturator internus m.
  3. pelvic diaphragm
19
Q

Pelvic diaphragm

A
  • levator ani m. and coccygeus m. form a funnel shaped pelvic floor
  • support pelvic viscera
20
Q

Levator ani composed of

A
  • male puboprostaticus m/female pubovaginalis m.
  • puborectalis m.
  • pubococcygeus m.
  • iliococcygeus m.
  • coccygeus m.
21
Q

The perineum

A
  • inferior to the pelvic outlet
  • divide into two triangles: urogenital and anal triangles
  • perineal body added support for pelvic viscera
22
Q

Ovarian/testicular artery

A

-from abdominal aorta

23
Q

Median sacral artery

A

-from abdominal aorta at bifurcation

24
Q

Superior rectal artery

A

-from inferior mesenteric artery

25
Q

Internal iliac artery

A

-main blood supply to perineum

26
Q

Anterior division of internal iliac artery

A
  1. umbilical a.
  2. obturator a.
  3. uterine a.
  4. inferior vesical/vaginal a.
  5. middle rectal a.
  6. internal pudendal a.
  7. inferior gluteal a.
27
Q

Posterior division of internal iliac artery

A
  1. iliolumbar a.
  2. lateral sacral a.
  3. superior gluteal a.
28
Q

Perineum veins

A
  1. Both hepatic portal and IVC drainage
  2. Internal iliac v.
  3. superior rectal v.
  4. median sacral v.
  5. ovarian v.
  6. lateral sacral v. (drains into IVC or SVC)
29
Q

Internal iliac vein

A
  • many variations
  • generally match named arteries (no umbilical v.)
  • superior gluteal vein: largest tributary to internal iliac v.
30
Q

Lateral sacral vein

A

-anastomose with internal vertebral venous plexus (important bc it may provide a route for metastatic cancer cells to brain/vertebral column)

31
Q

Lymphatic drainage of pelvic cavity

A
  1. External iliac LN
  2. internal iliac LN
  3. sacral LN
  4. Common iliac LN
    - all are very highly connected
32
Q

External iliac lymph node

A

-inguinal LN drains to external iliac LN

33
Q

Common iliac lymph node

A

-all lymph nodes drain to this, which then form a common route up midline

34
Q

Nerves of the pelvic cavity and perineum

A
  1. sacral spinal nerves
  2. coccygeal spinal nerves
  3. autonomic nerves
  4. Sacral plexus (pudendal n.)
35
Q

Autonomic nerves

A
  1. Superior hypogastric plexus (sympathetic)

2. Pelvic splanchnic nerves (parasympathetic)

36
Q

Pudendal nerve

A
  • main innervation for perineum
  • external genitalia sensation
  • travels with pudendal artery
37
Q

Pudendal nerve branches

A
  1. inferior rectal n.
  2. perineal n.
  3. posterior labial/scrotal n.
  4. deep perineal n.
  5. dorsal n. of clitoris/penis

Biomedical Human Anatomy (28 decks)

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