Pectinal Line

Question 1

The pectineal line is the important line separating what?

Answer 1

The upper and lower halves of the anal canal

Question 2

The upper half of the anal canal is derived from what?

Answer 2

Hindgut (endoderm)

Question 3

The upper half of the anal canal is sensitive or insensitive to pain?

Answer 3

insensitive

Question 4

The blood supply to the upper half of the anal canal is from?

Answer 4

Inferior Mesenteric Artery

Question 5

The lymphatics of the upper half of the anal canal drain into what?

Answer 5

Inferior mesenteric nodes

Question 6

The lower half of the anal canal is derived from what?

Answer 6

ectoderm

Question 7

The lower half of the anal canal is sensitive or insensitive to pain?

Answer 7

sensitive

Question 8

The blood supply to the lower half of the anal canal is from what branch of which artery?

Answer 8

Inferior rectal branch of

Internal pudendal artery

Question 9

The lymphatics from the lower half drain into what?

Answer 9

Lateral group of superficial inguinal nodes in the groin

Question 10

The internal pudendal artery is a branch of what?

Answer 10

Anterior division of the internal iliac artery