PRAC.27 Flashcards
abdominal wall and its nerves
M. obliquus externus abdominalis
Origin: Fascia thoracolumbalis, lateral surface of ribs
Insertion: Linea alba
M. rectus abdominis
Origin: Sternum + cartilago costalis
Insertion: Os pubis
M. obliquus internus abdominis
Origin: Fascia thoracolumbalis**, tuber coxae
Insertion: Linea alba
M. obliquus externus abdominalis
Origin: Fascia thoracolumbalis, lateral surface of ribs
Insertion: Linea alba
M. obliquus internus abdominis
Origin: Fascia thoracolumbalis**, tuber coxae
Insertion: Linea alba
M. rectus abdominis
Origin: Sternum + cartilago costalis
Insertion: Os pubis
M. transversus abdominis
Origin: Fascia thoracolumbalis, medial surface of ribs
Insertion: Linea alba, cartilago xiphoidea
A
Preumbilicus
B
Umbilical
C
Postumbilical
D
Prepubic
Name the abdominal region.
Preumbilicus
Name the abdominal region.
Umbilical
Name the abdominal region.
Postumbilical
Name the abdominal region.
Prepubic
16
Vagina m. recti abdominis
- Rectus sheath
- Formed by aponeurosis of abdominal muscle
5
Tendo prepubicus
Linea alba
Subcutaneous tissue
M. obliquus externus abdominalis
Origin: Fascia thoracolumbalis, lateral surface of ribs
Insertion: Linea alba
M. obliquus internus abdominis
Origin: Fascia thoracolumbalis**, tuber coxae
Insertion: Linea alba
M. transversus abdominis
Origin: Fascia thoracolumbalis, medial surface of ribs
Insertion: Linea alba, cartilago xiphoidea
Peritoneum
Lig. falciforme hepatis
Which region of the abdomen is shown?
Preumbilical region
Lig. vesicae medianum
Which region of the abdomen is shown?
Postumbilical region
Which region of the abdomen is shown?
Inguinal / pubic region
Which region is indicated”?
Preumbilical region
Which region is indicated?
Postumbilical region
Which region is indicated?
Inguinal / pubic region
Travelling direction of m. obliquus externus abdominalis fibres
Caudoventral
Travelling direction of m. obliquus internus abdominalis fibres
Cranioventral
M. obliquus externus abdominalis
Origin: Fascia thoracolumbalis, lateral surface of ribs
Insertion: Linea alba
Describe the rectus sheath
- Connective tissue sheet
- Surrounds the rectus muscle
Describe the musculature at the preumbilical region
- Internal oblique splits into lamina interna et externa
- Relative to rectus sheath:
- Transverse abdominal and lamina interna - Dorsal
- Lamina externa and external oblique - Ventral
Describe the musculature at the postumbilical region
- Relative to the rectus sheath:
- Transverse abdominal - Dorsal
- Internal + external oblique - Ventral
Describe the musculature at the inguinal/pubic region
- Relative to rectus sheath:
- All three abdominal muscles - Ventral
Lamina Interna
Lamina Externa
List the nerves supplying the abdominal muscles
-
R. cutanei lateralis of:
- N. costoabdominalis
- N. iliohypogastricus cranialis
- N. iliohypogastricus caudalis
- N. ilioinguinalis
- N. genitogemoralis
- All run over m. transversus abdominis
7
R. cutaneus lateralis
- Innervates the abdominal musculature from each lumbar vertebra
Which nerve supplies m. obliquus internus abdominis?
N. genitofemoralis
