Muscles Insertion, Origin, innervation, etc.
What is the origin of pectoralis major?
Clavicular head: anterior surface of medial half of clavicle sternocostal head: sternum and superior 6 costal cartilages
What are the proximal attachments of the external oblique muscle?
external surface of ribs 5 to 12
What is the arterial supply for pectoralis major?
pectoral branch of thoracoacromial trunk
What is the origin of the subclavius muscle?
1st rib
What is the origin of pectoralis minor?
Ribs 3-5
What is the innervation of the subclavius muscle?
Subclavius nerve
What is the action of pectoralis major?
adducts and medially rotates arm
What is the action of the subclavius muscle?
anchors and depresses clavicle
What is the insertion of the serratus anterior muscle?
anterior surface of medial border of scapula
What is the origin of the thoracic duct?
cisterna chyli in abdomen
What is the insertion of the subclavius muscle?
clavicle
Where does pectoralis minor originate?
coracoid process of scapula
What is the superior attachment of the rectus abdominis muscle?
costal cartilages of ribs 5 to 7
Action of pectoralis minor?
depresses and downwardly rotates tip of scapula
What are the muscles of the thoracic wall?
external intercostals internal intercostals innermost intercostals subcostals transversus thoracis
What is the action of the rectus abdominis?
flexes the trunk
What are the distal attachments of the internal oblique muscle?
inferior border of ribs 10 to 12 linea alba pubic crest pecten pubis
What is the arcuate line?
inferior limit of the posterior wall of the rectus sheath
What is the innervation of the muscles of the thoracic wall?
intercostal nerves
What are the proximal attachments of the transversus abdominis muscle?
internal surface of the costal cartilages of ribs 7 to 12 thoracolumbar fascia iliac crest lateral third of the inguinal ligament
What is the innervation for pectoralis major?
lateral and medial pectoral nerves
Where does the pectoralis major muscle insert?
lateral lip of intertubercular groove of humerus
What is the origin of the serratus anterior muscle?
lateral portion of upper 8 ribs
Where does the thoracic duct empty?
left subclavian and left internal jugular veins
What are the distal attachments of the transversus abdominis muscle?
linea alba pubic crest pecten pubis
What are the distal attachments of the external oblique muscle?
linea alba pubic tubercle anterior half of the iliac crest
What is the innervation of the serratus anterior muscle?
long thoracic nerve
Innervation of pectoralis minor?
medial pectoral nerve
What is the action of the serratus anterior muscle?
protracts and rottates scapula (holds it against body wall)
What is the inferior attachment of the rectus abdominis muscle?
symphysis body of the pubis
What are the proximal attachments of the internal oblique muscle?
thoracolumbar fasica iliac crest lateral half of the inguinal ligament
