Chapter 3: Abdomen, Pelvis, and Perineum (continued) Flashcards
What is the processus vaginalis?
evagination of the parietal peritoneum and the peritoneal cavity that extends into the inguinal canal
What is the tunica vaginalis?
portion of the processus vaginalis that remains patent in the scrotum and surround the testis
What is congenital indirect inguinal hernia often caused by?
persistent processus vaginalis
What is hydrocele?
a collection of serous fluid in the tunica vaginalis resulting in an enlarged scrotum
Does a hydrocele reduce in size when a person is lying down?
no
Direct hernias are found medial or lateral to the inferior epigastric vessels?
medial to
Indirect hernias occur medial or lateral to the inferior epigastric vessels?
lateral to
In relation of the inguinal ligament, where do inguinal hernias occur?
superior to the inguinal ligament
How do indirect inguinal hernias occur?
result when abdominal contents protrude through the deep inguinal ring lateral to the inferior epigastric vessels
In relation to the spermatic cord, where are indirect hernias found?
within the spermatic cord
Direct inguinal hernias result when what happens?
when the abdominal contents protrude through the weak area of the posterior wall of the inguinal canal medial to the inferior epigastric vessels.
Which hernia, direct or indirect, usually passes through the inguinal (Hesselbach’s) triangle?
direct hernias
What is the lateral border of the inguinal (Hesselbach’s) triangle?
inferior epigastric vessels
What is the medial border of the inguinal (Hesselbach’s) triangle?
rectus abdominis muscle
What is the inferior border the the inguinal Hesselbach’s triangle?
inguinal ligament
Do femoral hernias pass above or below the inguinal ligament?
below it
What structures does the femoral sheath contain?
femoral artery, vein, canal
What is the nerve that provides parasympathetic innervation to the foregut?
vagus nerves
What is the nerve that provides parasympathetic innervation to the midgut?
vagus nerve
What is the nerve that provides parasympathetic innervation to the hindgut?
pelvic splanchnic nerve
What preganglionic branch of the sympathetic nervous system provides innervation to the foregut?
Preganglionics: thoracic splanchinic nerves (T5-T9)
What preganglionic branch of the sympathetic nervous system provides innervation to the midgut?
Preganglionics: thoracic splanchnic nerves (T9-T12)
What preganglionic branch of the sympathetic nervous system provides innervation to the hindgut?
Preganglionics: lumbar splanchnic nerves (L1-L2)
What postganglionic cell bodies provide sympathetic innervation to the foregut?
Postganglionic cell bodies: celiac ganglion