Lecture 24: Male Pelvic Cavity

Question 1

Answer 1

Question 2

The pelvic cavity is formed by the ___ bones, the __, and the ___

Answer 2

hip bones; sacrum; coccyx

Question 3

___: supports and protects the pelvic viscera, transmits upper body weight to lower extremities, provides a stable base for lower limb function, and forms birth canal

Answer 3

Bony pelvis

Question 4

Each hip bone is formed by three bones that are fused at puberty:
1) ??
2) ??
3) ??

Answer 4

1) Ilium
2) Ischium
3) Pubis

Question 5

What are the two joints of the pelvis?

Answer 5

1) Pubic Symphysis
2) Sacroiliac Joint

Question 6

Which joint of the pelvis is a relatively immobile fibrocartilaginous joint?

Which pelvic joint is a synovial joint form between right and left ilia and sacrum?

Answer 6

Pubic Symphysis

SI Joint

Question 7

True or False: Minimal gliding rotational movements occur at the SI joint

Answer 7

True

Question 8

What are the two ligaments of the pelvis?

Answer 8

1) Sacrotuberous Ligament
2) Sacrospinous Ligament

Question 9

Which pelvic ligament attaches to the ischial tuberosity and sacrum?

Which pelvic ligament attaches to the ischial spine and the sacrum?

Answer 9

Sacrotuberous Ligament: attaches to ischial tuberosity + sacrum

Sacrospinous Ligament: attaches to ischial spine and sacrum (also deep to sacrotuberous ligament)

Question 10

The sacrotuberous and sacrospinous ligaments transform the greater and lesser sciatic notches into the ____ and ____ sciatic foramina

Answer 10

greater; less

Question 11

The superior pelvic aperture is also known as the ____

The inferior pelvic aperture is also known as the ___

Answer 11

pelvic inlet

pelvic outlet/birth canal

Question 12

Answer 12

Question 13

Answer 13

Question 14

Answer 14

Question 15

Answer 15

Question 16

Pelvis major is known as the ____ while the pelvis minor is known as the ___

Answer 16

pelvis major = false pelvis
pelvis minor = true pelvis

Question 17

___ delineates the pelvic inlet/superior pelvic aperture

Answer 17

Pelvic brim

Question 18

True or False: Pelvis minor is inferior and contains PELVIC viscera, while Pelvic major is superior and contains ABDOMINAL viscera

Answer 18

True

Question 19

The inferior pelvic aperture is delineated by the ____, ____, ____, and ____

Answer 19

ischial tuberosities, ischial spines, ischiopublic rami, and coccyx

Question 20

True or False: Perineum is a diamond shaped area

Answer 20

True

Question 21

_____: the investing fascias of the pelvic m. that line the pelvic cavity and are continuous with abdominal muscular fascia

Answer 21

Parietal Pelvic Fascia

Question 22

____: peritoneum that invests abdominal organs and extends into the true pelvis, as well as partially invests pelvic organs, forming spaces and folds between them

Answer 22

Pelvic Peritoneum

Question 23

True or False: Both males and females have spaces on either side of the rectum (pararectal fossa) an the urinary bladder (paravesical fossa)

Answer 23

True

Question 24

Which sex has a pouch located between the rectum and seminal vesicles/urinary bladder (rectovesical) and a fold between the sacrum and prostate/bladder (sacrogenital)?

Answer 24

Male only

Question 25

Fractures of the hip bone are considered ___ fractures

Answer 25

pelvic fractures

Question 26

___ and ____ are muscles of the lateral pelvic wall

Answer 26

Piriformis m and Obturator internus m.

Question 27

Which pelvic muscle of the lateral wall is the site of the sacral pelxus?

Answer 27

Piriformis muscle

Question 28

True or False: Both the Obtruatory Internus m. and the Piriformis m. insert onto the femur

Answer 28

True

Question 29

The obtruator internus m. is the tendon the exits the pelvis via the ___ The piriformis m. is the tendon that exits the pelvis via the ______

Answer 29

lesser sciatic foramen greater sciatic foramen

Question 30

The pelvic floor is formed by the ____

Answer 30

pelvic diaphragm (bowl shaped group of skeletal muscles that partially closes off the pelvic outlet and supports the abdominopelvic viscera)

Question 31

True or False: The pelvic diaphragm partially closes off the pelvic out when intra-abdominal pressure is raised (as in coughing or straining)

Answer 31

True

Question 32

___: pulls coccyx anteriorly and supports pelvic viscera; wags tails in other mammals

Answer 32

Coccygeus

Question 33

____: elevates pelvic floor to resist/raise intra-abdominal pressure (Important for forced expiration, coughing, or vomiting)

Answer 33

Levator Ani

Question 34

Where does the piriformis nerve exit the pelvis?

Answer 34

Greater Sciatic Foramen

Question 35

____ transmits obturator n/a/v and connects the abdominopelvic region with medial part of thigh

Answer 35

Obturator Canal

Question 36

True or False: The lesser sciatic foramen connects the gluteal region with the perineum

Answer 36

True

Question 37

The tendon of obtruator internus m exits the pelvis via the _____foramen

Answer 37

Lesser Sciatic Foramen

Question 38

____ Foramen connects the pelvic cavity with the gluteal region

Answer 38

Greater Sciatic Foramen

Question 39

The superior gluteal n/a/v pass superior to the ___ m, inferior gluteal n/a/v

Answer 39

piriformis

Question 40

Which nerve passes inferior to the piriformis m?

Answer 40

Pudenal n.

Question 41

Answer 41

Question 42

The ___ Plexus supplies sensory and motor innervation to the perineum, gluteal region, and lower extremities. Many of these nerves exit the pelvis via: greater sciatic foramen

Answer 42

The Sacral Plexus

Question 43

__ and __ form the lumbosacral trunk

Answer 43

L4 and L5

Question 44

What four branches come off the sacral plexus?

Answer 44

1) Sciatic n 2) Pudenal n 3) Superior Gluteal n. 4) Inferior Gluteal n

Question 45

Which branch of the sacral plexus provides motor innervation to BOTH the gluteus minimus and medius muscles? A. Sciatic Nerve B. Superior Gluteal Nerve C. Inferior Gluteal Nerve D. Pudenal Nerve

Answer 45

B. Superior Gluteal Nerve

Question 46

Which branch of the sacral plexus provides motor innervation to the gluetus maximus ONLY? A. Sciatic Nerve B. Superior Gluteal Nerve C. Inferior Gluteal Nerve D. Pudenal Nerve

Answer 46

C. Inferior Gluteal Nerve

Question 47

____ nerve provides motor and sensory function to lower extremity; has two components (tibial and common fibular) A. Sciatic Nerve B. Superior Gluteal Nerve C. Inferior Gluteal Nerve D. Pudenal Nerve

Answer 47

A. Sciatic Nerve

Question 48

Which artery/vein delivers the majority of blood to the pelvis? A. Internal Iliac a/v B. Common Iliac a/v C. External Iliac a/v

Answer 48

A. Internal Iliac a/v

Question 49

What are the three posterior division branches of the internal iliac a/v?

Answer 49

1) Iliolumbar a 2) Lateral sacral a 3) Superior gluteal a

Question 50

Which posterior division branch of the internal iliac a/v passes posteriorly between the lumbosacral trunk and S1 ventral ramus, superior to piriformis muscle? A. Iliolumbar a. B. Lateral sacral a. C. Superior gluteal a.

Answer 50

C. Superior gluteal a.

Question 51

What are the five anterior division branches of the Internal Iliac a/v?

Answer 51

1) Umbilical a. 2) Inferior vesical a. 3) Middle rectal a 4) Obtruator a 5) Internal Pudendal a 6) Inferior Gluteal a 7) Vaginal a

Question 52

Which anterior division of the Internal Iliac a/v supplies the bladder and ureter in males? In females?

Answer 52

Males: Inferior vesical a Females: Uterine a.

Question 53

True or False: The obturator a. supplies the medial compartment of the thigh

Answer 53

True

Question 54

Which anterior division of the internal iliac a/v travels with the pudendal n to supply the perineum?

Answer 54

Internal Pudendal a.

Question 55

Answer 55

Question 56

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Question 57

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Question 58

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Question 59

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Question 60

Are the following Internal or External Genital Organs? - Testis - Epididymis - Ductus Deferens - Prostate Gland - Seminal Vesicles - Ejaculatory Duct

Answer 60

Internal

Question 61

The testis is suspended in the scrotum by the ____

Answer 61

spermatic cords

Question 62

___ is the source of male hormones (testosterone, mostly) and site of spermatogenesis

Answer 62

Testis

Question 63

Where are sperm made?

Answer 63

Seminiferous Tubules

Question 64

True or False: The testis is supplied by the testicular a/v

Answer 64

True

Question 65

The right testicular v. drains into the ____ The left testicular v. drains into the ____

Answer 65

Right testicular v. = IVC Left testicular v. = Left Renal Vein

Question 66

Which part of the epididymis is continuous with the ductus deferens?

Answer 66

Tail

Question 67

___ stores sperm until its mature

Answer 67

Epididymis

Question 68

___: muscular tube that transport sperm from testis to urethra during ejaculation

Answer 68

Ductus Deferns

Question 69

What are the main structures located within the spermatic cord?

Answer 69

1) Ductus deferens 2) Testicular a. 3) Pampiniform plexus of veins

Question 70

The ductus deferens narrows and joints the duct of the ___ to form the ___ duct

Answer 70

1) seminal gland 2) ejaculatory duct

Question 71

During a ___, part of the ductus deferens is excised through an incision in the superior part of the scrotum

Answer 71

vascetomy

Question 72

Answer 72

Question 73

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Question 74

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Question 75

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Question 76

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Question 77

___: contribute an viscous fluid, rich in fructose (to nourish sperm) and prostaglandin fluid (to help stimulate uterine contractions)

Answer 77

Seminal vesicles

Question 78

The short duct of the seminal vesicle joints the ampulla of the ductus deferens to form the _____duct

Answer 78

ejaculatory duct

Question 79

____: slender tube that arises by the union of the duct of a seminal gland with the ductus deferens

Answer 79

Ejaculatory ducts

Question 80

True or False: The ductus deferens courses through the prostate gland to open into the prostatic urethra

Answer 80

False - the EJACULATORY DUCTS course through tissue of the prostate gland to open into the prostatic urethra

Question 81

What is the larges accessory organ of the male reproductive tract?

Answer 81

Prostate gland

Question 82

The prostate gland contacts with bladder and surrounds the ____

Answer 82

prostatic urethra

Question 83

The prostate gland has autonomic innervation via the _____plexus

Answer 83

prostatic plexus

Question 84

The prostate gland and seminal vesicles are supplied by branches of the _____a

Answer 84

internal iliac a.

Question 85

Venous blood drains to the prostatic and then to the _____ plexus

Answer 85

internal vertebral venous plexus

Question 86

True or False: The prostate gland contributes a thin, milky fluid rich in substances that enhance sperm motility and enzymes that clot and liquify semen

Answer 86

True

Question 87

The body of the penis is formed by which three cylindrical erectile bodies? What are they bound together by?

Answer 87

1) Corpora Cavernosa 2) Corpus Spongiosum 3) Prepuce (foreskin) Bound together by Buck's fascia (dense CT sheath)

Question 88

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Question 91

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