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Anatomy Module 5 > Rectum > Flashcards

Flashcards in Rectum Deck (35):
0

Fixed terminal part of the large intestine

Rectum

1

Descends along the sacrococcygeal concavity

Rectum

2

Part of the colon that has
- no sacculation
- no appendices epiplocae
- no mesentery
- no taenia coli

Rectum

3

In males, it is the part of the rectum that is related anteriorly to the urinary bladder

Upper third

4

In females, the upper third of the rectum is related anteriorly to

Cervix and body of the uterus

5

Part of the rectum covered by peritoneum in its anterior aspect

Middle third

6

In males, the peritoneum covering the rectum is folded onto the urinary bladder to form

Recto vesical pouch

7

On the posterior vaginal wall in females, the peritoneum of the rectum folds to form

Recto uterine pouch

8

Semilunar transverse or horizontal folds in the rectum is called

Valves of houston
- 2 on L: superior, inferior
- 1 on R: middle

9

Valve of houston that occasionally encircles the rectal lumen

Superior fold

10

Largest and most constant valve of houston that is found immediately above the rectal ampulla

Middle fold

11

From the embryological hindgut that is enclosed by the mesorectal fascia

Mesorectum

12

Mesorectal fascia continues with a denser condensation of fascia anteriorly called

Males: rectovesical fascia of Denonvillier
Females: fascia of rectovaginal septum

13

Mesorectum contains what structures?

Superior rectal a & branches
Superior rectal v & tributaries
Lymph vessels and nodes along SRA
Branches from IMPlexus

14

Arterial supply to the upper 2/3 of the rectum

Superior Rectal Artery

15

Superior rectal artery is a continuation of

IMA

16

Superior rectal a divides into 2 branches at what level of the spinal cord

S3

17

Provides arterial supply to the muscle of the mid and lower rectum

Middle rectal arteries

18

Middle rectal a arise from

Ante division of internal iliac a

19

Terminal branches of the internal pudendal a

Inferior rectal a

20

Supplies the internal and external anal sphincters, anal canal below its valves, and perianal skin

Inferior rectal a

21

Inferior rectal a is a branch of

Internal pudendal a

22

Anastomose with the terminal branch of the superior rectal a

Ascending branches of inferior rectal a

23

Venous drainage of the rectum

Rectal venous plexus

24

Rectal venous plexus connects anteriorly with what plexuses?

Male: vesical plexus
Female: utero-vaginal plexus

25

Rectal venous plexus drains to

Superior rectal v

26

External part of the rectum: inferior portion is drained by

Inferior rectal vein

27

External part of the rectum: middle portion is drained by

Middle rectal v

28

External part of the rectum: superior part is drained by

Superior rectal v

29

Inferior rectal v drains to

Internal pudendal v

30

Middle rectal v is a drains to

Internal iliac v - anterior division

31

Superior rectal v drains to

IMV

32

T or F: There is a communication between portal and systemic venous systems

True

33

Superior rectal veins are formed from the

Internal rectal plexus

34

Lymph drainage of the rectum and upper anal canal above dentate line drains into

Epirectal nodes in mesorectum