Hi! Attached is a picture of 'Superficial dissection' of Anterior Abdominal Wall from Netter's Atlas
Please try to identify the structures labelled, there are some questions also. Please feel free to answer even if it is presumed to be wrong for 'feedback' from me.
i. The structure labelled 'o' is quite important. Is there any implication if during surgery incision is made through it?
ii. The structures 'P' & 'Q' both are layers of same layer out of the 8 layers of 'Anterior Abdominal Wall '. What are the layers P & Q , is there any clinical significance to these 2 layers?
iii. There is an opening seen as 'R'. What is this opening? which muscular aponeurosis is dragged to produce this opeing in early part of our life. what is the structure which drags this aponeurosis ?
iv. 'S' denotes some structure which gives strength to 'R' opening. What is 'S'
v. 'V' is very important rope like thing, on which integrity of all the strutures around are dependent. what is it?
vi. What is the layer of fascia seen lying over spermatic cord as 'X'? is it the only layer of fascia over the cord, what are the others and how they are derived during early years of life?
vii. List the different types of structures formed by 'M'.
Best of luck in answering this question using your 'GI' knowledge.
O- linea alba
ReplyDeleteP- subcutaneous (superficial) fascia
Q- scarpa’s (membranous) subcutaneous fascia
M- aponeurotic part of external abdominal oblique muscle
V- Inguinal (poupart’s) ligament
S- intercrucal fibers
R- superficial inguinal ring
X- external spermatic fascia on spermatic cord
Yes all are correct. Clinical significance of the two layers of superficial fascia ---these two layers are continued into private genital parts & perineum. In case of extravasation of urine in pelvic fracture--urine may be found in between two layers.
ReplyDeleteother important things are\
1.incision at linea alba is difficult to heal as it is avascular
2.Testis with gubernaculum drags the external oblique aponeurosis during late foetal life
3.Two other layers over spermatic cord are--internal spermatic fascia (from fascia transversalis) & cremateric fascia (from internal oblique & trans abdominis)
4.Structures formed by external oblique aponeurosis: inguinal ligament, linea alba, anterior layer of rectus sheath, lacunar ligament, crus of superficial ring
Best of luck
Dr Nilesh