Pelvis Wk11

Question 1

Describe the bones that make up the pelvis.

Answer 1

Ilium, ischium, pubis, sacrum, coccyx

Question 2

Role of pelvis

Answer 2

Support, protection & locomotion

Question 3

Why is the arcuate line important?

Answer 3

False and true pelvis are divided by the arcuate line of pelvis

Question 4

What are the contents of the false pelvis?

Answer 4

False Pelvis: ileum, caecum, appendix, sigmoid colon

Question 5

What are the contents of the true pelvis?

Answer 5

True Pelvis: ureters (distal) urinary bladder, rectum,
reproductive organs

Question 6

What is the marking for true pelvis?

Answer 6

Pelvic brim (pelvic inlet) (circle in the middle)

Question 7

What are the ligaments and joints of the pelvis?

Answer 7

Lumbo-sacral joint
* Sacro-Iliac joints

Lig: iliolumbar and anterior sacroiliac ligaments

Question 8

Sacroiliac ligament posterior

Answer 8

oblique

Question 9

Sacrospinous ligament posterior

Answer 9

transverse

Question 10

Sacraltuberous ligament is

Answer 10

inferior and almost vertical

Question 11

Female Pelvis:

Answer 11

False pelvis – wide and shallow
Pelvic outlet – round
Ishial tuberosities – everted
Subpubic angle – 90-100 degree

Question 12

What are the differences between female and male pelvis?

Answer 12

Shape- more broader & rounder (female) - Male = narrower
tuberosities - everted female/inverted in males
PO: F=round; M=oblong
SPA: F=90-100 and M=70

Question 13

Male Pelvis

Answer 13

False pelvis – narrow and deep
Pelvic outlet – oblong
Ishial tuberosities – inverted
Subpubic angle – 70 degrees

Question 14

What are the pelvic contents in urinary system?

Answer 14

Pelvic ureters
Urinary Bladder
Urethra

Question 15

What are the pelvic content in GIT?

Answer 15

Sigmoid colon
Rectum
Anal canal

Question 16

Pelvic Contents in the Reproductive System
Females include

Answer 16

Uterus
Uterine (Fallopian) tubes
Ovaries
Vagina

Question 17

What are the pelvic contents in the male reproductives?

Answer 17

Prostate
Testis
Vas Deferens
Epididymis
Seminal glands
Ejaculatory ducts

Question 18

Name and locate the muscles of pelvic diaphragm.

Answer 18

Separates pelvic cavity from the perineum
Formed by coccygeus and levator ani

Question 19

Levator ani is composed of 3 muscles, which are?

Answer 19

Puborectalis (sling)
Pubococcygeus (sling)
Iliococcygeus

Question 20

Female vs Male levator ani

Answer 20

• Males tight whereas females have connective tissue gaps for pregnancies

Question 21

What is the function of pelvis?

Answer 21

Micturition, Defecation, Erection, Ejaculation & Parturition (females)

Question 22

What are the nerve plexus of the pelvis?

Answer 22

Sacral plexus & Coccygeal Plexus

Question 23

Coccygeal Plexus is located in

Answer 23

S4-S5 and nerve to leavator ani & ext anal sphincter

Question 24

Sciatic nerve is from

Answer 24

S4-L3 and goes through greater sciatic foramen - posterior leg

Question 25

Pudendal nerve (S2-S4) is the

Answer 25

main nerve of genitals and goes through greater sciatic foramen

Question 26

Sympathetic innervation of pelvis is

Answer 26

Vasomotor
* Inhibits peristaltic contraction of rectum
* Stimulates contraction of genital organs
during orgasm – ejaculation in males

Question 27

Parasympathetic innervation of pelvis includes (sacral)

Answer 27

Contraction of bladder and rectum
Innervate erectile bodies in genitalia
Pelvic splanchic nerves (S2-S4)

Question 28

Autonomic Innervation in Pelvis involves:

Answer 28

Superior hypogastric plexus - Sympathetic innervation & visceral afferents

Inferior hypogastric plexus – nerves from sup. hypogastric plexus
merge w pelvic splanchnic n

Pelvic splanchnic nerves - Parasympathetic fibres S2-S4