Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Anatomy Exam 2 > Pelvis I > Flashcards

Pelvis I Flashcards

1
Q

What bones make up the pelvic girdle?

A

2 Os coxae (hip bones), sacrum and coccyx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What forms the ox coxae?

A

fusion of ilium, ischium and pubis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Acetabulum

A

where the head of the femur articulates with the os coxae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What forms the obturator foramen?

A

the ischium and pubis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What connects the ASIS to the PSIS?

A

the iliac crest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the concave medial surface of the ilium?

A

the iliac fossa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What makes up the ischiopubic ramus?

A

The inferior pubic ramus and the ischial ramus

superior to this is the superior pubic ramus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

ischial tuberosity

A

site of muscle attachment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What articulates with the base of the sacrum?

A

L5/S1 intervertebral disc and L5 vertebrae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What articulates with the apex of the sacrum?

A

the coccyx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the sacral promontory?

A

anterior edge of the S1 vertebral body, obstetrical landmark, limits anterior/posterior dimensions of the pelvis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Pelvic inlet

A

made up of greater (false) pelvis- continuous with abdominal cavity & lesser (true) pelvis-holds pelvic organs/vasculature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Boundaries of the Pelvic Outlet

A

coccyx and sacrum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Describes the sex differences of the pelvis

A

Male: subpubic angle is <70deg, heart shaped

Females: subpubic angle >80deg, round

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Obturator membrane

A

Closes the obturator membrane except for a small opening, the obturator canal ( a passage way to the medial compartment of the thigh

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the muscles of the lesser pelvis?

A

piriformis, obturator internus, pelvic diaphragm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

origin and insertion of piriformis?

A

origin: anterior surface of sacrum- course through greater sciatic foramen
insert: femur

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Sacral plexus

A

ventral rami of the sacral spinal nerves emerge on the anterior sacral foramina and pass through piriformis to form the sacral plexus on its internal surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What innervates piriformis?

A

the sacral plexus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

origin and insertion of obturator internus?

A

originates from the obturator membrane and courses through the lesser sciatic foramen to insert on the femur

covered on internal surface by thick obturator fascia

21
Q

What innervates obturator internus?

A

sacral plexus

22
Q

Describe the pelvic diaphragm

A

shaped like a bowl

right and left muscles fuse in the midline to form medial
raphe

closes the inferior pelvic aperture and forms the pelvic floor

23
Q

What structures pass through the pelvic diaphragm to reach the perineum?

A

urethra, vagina, rectum

24
Q

What innervates the pelvic diaphragm?

A

branches of the sacral plexus and coccygeal plexus

25
Q

What muscles make up the pelvic diaphragm?

A

coccygeus and levator ani

26
Q

coccygeus

A

extends from the ischial spine to the coccyx and inferior sacrum

lies on the internal surface of the sacrospinous ligament

27
Q

levator ani

A

extends from the pubis, the tendinous arch and the ischial spine to the coccyx and levator ani on the opposite side, along the median raphe

28
Q

What are the 2 openings of the levator ani?

A

anteriorly- urogenital hiatus (urethra and vagina)

posteriorly- anal aperture

29
Q

What are the 2 portions of the levator ani?

A

iliococcygeus and pubococcygeus

30
Q

What sections can the pubococcygeus be divided into?

A

pubovaginalis (F)

puboprostaticus (M)

puborectalis

31
Q

Where is puborectalis? What is its function?

A

forms a sling around the anorectal junction maintaining the anorectal flexure, preventing defecation

relaxes during defecation while the rest of levator ani contracts to prevent pelvic viscera from herniating inferiorly

32
Q

What can weakness of the pelvic diaphragm result in?

A

urinary stress incontinence, bowel incontinence, prolapse of pelvic viscera

33
Q

Where do the testicular arteries travel?

A

Within the spermatic cords inferiorly

34
Q

Where does the aorta bifurcate into the common iliac arteries?

A

At L4

35
Q

What does the external iliac artery supply?

A

the anterolateral abdominal wall and LE

36
Q

What does the internal iliac artery supply?

A

pelvis. perineum and gluteal region

37
Q

What are the major branches of the internal iliac artery?

A

superior gluteal artery, inferior gluteal artery, internal pudendal artery, umbilical artery, obturator artery, inferior vesicle artery (males), rectal artery, uterine artery (females), vaginal artery (females)

38
Q

What does the superior gluteal artery supply?

A

the gluteal region

39
Q

What does the inferior gluteal artery supply?

A

the gluteal region

40
Q

What does the internal pudendal supply?

A

exits greater sciatic foramen to enter to gluteal region and then travels to the perineum by going through the lesser sciatic foramen

gives off inferior rectal artery which supplies the anal canal

41
Q

What does the umbilical artery supply?

A

gives off superior vesical artery which supplies the superior aspect of the bladder (and ductus deferens in males)

42
Q

course of obturator artery?

A

courses along the lateral wall of the pelvis, exits through the obturator canal to enter the medial compartment of the thigh

in 20% of ppl there is an aberrant obturator artery which arises from the inferior epigastric artery

43
Q

What is important about an aberrant obturator artery?

A

it can be accidentally damaged during hernia repairs

44
Q

Inferior vesical artery

A

direct branch off the internal iliac in males

supplies inferior bladder, urethra, seminal vesicles and prostate

45
Q

middle rectal artery

A

anastomoses with the superior and inferior rectal arteries

46
Q

uterine artery

A

only present in females

passes superior to the ureter

47
Q

vaginal artery

A

only in females

supplies vagina, inferior bladder and urethra

anastomoses with the ovarian arteries which anastomose with the ovarian arteries

48
Q

Trace the pathway for lymphatic drainage of the pelvic organs

A

internal iliac lymph nodes >

common iliac nodes >

lumbar lymph nodes >

chyle cistern>

thoracic duct

49
Q

What is the exception to the lymphatic drainage of the pelvic organs?

A

lymph from the ovaries and testicular vessels drain into the lumbar lymph nodes

Anatomy Exam 2 (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions