Muscles Of Thorax And Abdomen Flashcards
Insertion of external intercostal
Superior border of ribs below
What is the origin of the external intercostal
Inferior border of the ribs
Innervation of external intercostal
Intercostal nerve
Action of external intercostal
Elevates ribs during forced inspiration
Origin of internal intercostal
Inferior border of ribs
Insertion of internal intercostal
Superior border of ribs below
Innervation of internal intercostal
Intercostal nerve
Action of internal intercostal
Inerosseous part depresses ribs , interchondral part elevates ribs during forced inspiration
Origin of innermost intercostal
Inferior border of ribs
Insertion of innermost intercostal
Superior border of ribs below
Innervation of innermost intercostal
Intercostal nerve
Action of innermost intercostal
Inerosseous part depresses ribs , interchondral part elevates ribs during forced inspiration
Origin of transversus thoacis
Posterior surface of lower sternum
Insertion of transversus thoracis
Internal surface of costal cartilages 2-6
Innervation of transversus thoracis
Intercostal nerve
Action of transversus thoracis
Weekly depresses ribs
Origin of external oblique
External surfaces 5-12 ribs
Insertion of external oblique
Linea alba, pubic tubercle, anterior half of iliac crest
Innervation of external oblique
Thoraco-abdominal nerves ( anterior rami of t7-t11) and subcostal nerve
Action of external oblique
Compresses and support abdominal viscera, flex and rotate trunk
Origin of internal oblique
Thoracolumbar fascia, anterior 2/3 of iliac crest, connective tissue deep to inguinal ligament
Insertion of internal oblique
Inferior borders of 10-12 ribs, linea alba, and pubis
Innervation of internal oblique
Thoraco-abdominal nerves, subcostal and first lumbar nerve
Action of internal oblique
Compresses and support abdominal viscera, flex and rotate trunk
Origin of transversus abdominis
Internal surface of 7-12 costal cartilages, thoracolumbar fascia, iliac crest, connective tissue deep to inguinal ligament
Insertion of transversus abdominis
Linea alba with aponeurosis of internal oblique, pubic crest, and pubis
Innervation of transversus abdominis
Thoraco-abdominal nerves, subcostal, and first lumbar nerve
Action of transversus abdominis
Compresses and supports abdominal viscera
Origin of rectus abdominis
Pubic symphysis and pubic crest
Insertion of rectus abdominis
Xiohoid press of 5-7 costal cartilages
Innervation of rectus abdominis
Thoraco-abdominal and subcostal nerves
Action of rectus abdominis
Flexes trunk and compresses andominal vsicera, stablizes and controls tilt of pelvis