anatony of appendix.

1. VERMIFORM APPENDIX
DR.SUPRITI
DEMONSTRATOR(DEPT OF ANATOMY)
TMMC&RC

2. • It is a blind-ended muscular tube attached to the
posteromedial wall of caecum, about 2cm below ileocaecal jxn.
• Suspended by peritoneal fold, MESOAPPENDIX.
• Devoid of taenia coli, sacculations, appendices epiploicae.

4. MESOAPPENDIX
• The mesoappendix (mesentery of appendix) is short, triangular
and variable.
• It extends the whole length of appendix.The breadth of
mesoappendix usually falls short of length of appendix.
• The body of appendix is kinked on itself where the free border
of mesoappendix ends,hence it is coiled like worm and is
named the vermiform.
• Appendicular vessels pass through free margin of
mesoappendix.

6. MEASUREMENTS
• The appendix is 9 cm (7 to 11cm) in length but can range from
2 to 20 cm. The diameter of the appendix is 1 to 7 mm.
• It is relatively longer in children and decreases after 40 years of
age.

7. SURFACE ANATOMY
• The base of appendix is represented by a point about 2cm
below the intersection between the transtubercular and rt
lateral planes.

8. McBurney’s point
• Represented by a point at the junction of medial two third and
lateral one third of a line which extends from the umblicus to
rt ant. Sup.illiac spine.
• This point indicate maximum tenderness in a patient suffering
from inflammation of the appendix.

10. PARTS OF APPENDIX
 A) Base
 B) Body
 c) Tip

11. BASE
 Base – it is attached to posteromedial wall of caecum
about 2 m below the ileocaecal junction.
 All taenia of caecum converge to the base and serve
as a guide for the identification of the appendix.

13. BODY
 Body is narrow,tubular and contains a canal which
opens into the caecum.
 The caecal opening is guarded by an incomplete
mucous fold called as,”THE VALVE OF GERLACH”

14. TIP
 It is least vascular and is directed in various direction.

15. TYPES
 A) Retro-caecal: 12’o clock (65%)
 B) Splenic: 2’o clock (1-2%)
Preileal (Dangerous) & Postileal
 C) Promontoric: 3’o clock , towards sacrum
 D) Pelvic: 4’o clock (30%), downwards & medially (rt
uterine tube & ovary)
 E) MID-INGUINAL: 6’o clock Vertically downwards.
 F)PARACOLIC:11o’clock,appendix pass upwards or
towards right.

17. BLOOD SUPPLY
 Appendicular A br. Of inferior div of ileocolic art
 Recurrent br supplies base of appendix and anastomose
with posterior caecal artery.
 End artery

18. 18BITEW M./bitewm@gmail.com

19. NERVE SUPPLY
 Parasympathetic: VAGUS
 Sympathetic: T10 segment of spinal cord.

20. LYMPHATIC DRAINAGE
Lymphatics drain into superior mesenteric lymph
nodes via ilea-colic nodes

21. APPLIED ANATOMY
 Inflammation of appendix is known as
appendicitis,seen in adoloscent age.In this condition
it is usually necessary to remove the appendix.
 The operation for removal of appendix is called as
appendectomy.

22.  The anatomial factors producing inflammation may
be as follows:-
 Appendix is a blind tube,a faecolith may obstruct the
lumen and precipitate the attack of appendicitis.
 Supplied by an end artery.
 Presence of hiatus muscularis.
 Presence of lymphatic follicles in submuosa.