Gross Anatomy OIAs Exam With complete solution–Expert
Verified | Latest Questions 2025
Origin of the clavicular head of the pectoralis major - clavicle
Origin of the sternocostal head of the pectoralis major - anterior surface of the
sternum; upper 6 costal cartilages.
Origin of the pectoralis major - sternocostal head: anterior surface of sternum and
upper 6 costal cartilages.
Clavicular head: clavicle
Insertion of the pectoralis major - Lateral lip of the intertubercular groove,
humerus
Actions of the pectoralis major - Adduction and medial rotation
Actions of the clavicular head of the pectoralis major - flexion of humerus
Action of the Sternocostal head of the pectoralis major - extension of humerus
from flexed position
Innervation of the clavicular head of pectoralis major m. - lateral pectornal nerve,
(C5, C6, C7)
Innervation of the sternocostal head of the pectoralis major m. - Medial pectoral
nerve (C8, T1)
, Innervation of the sternocostal head of the pectoralis major - medial pectoral
nerve (C8, T1)
Origin of the pectoralis minor - ribs 3-5
Insertion of the pectoralis minor - coracoid process, scapula
Actions of the pectoralis minor - Scapular stabilization, scapular protraction,
depresses acromion, accessory muscle of inspiration
Innervation of pectoralis minor - medial pectoral nerve (C8, T1)
Origin of subclavius - 1st rib and costal cartilage
insertion of subclavius - inferior surface of the clavicle
actions of the subclavius - anchors and depresses clavicle
Innervation of subclavius - N. to subclavius (C5, C6)
Serratus anterior origin - ribs 1-8
Insertion of the serratus anterior - medial border of scapula, anterior surface
Verified | Latest Questions 2025
Origin of the clavicular head of the pectoralis major - clavicle
Origin of the sternocostal head of the pectoralis major - anterior surface of the
sternum; upper 6 costal cartilages.
Origin of the pectoralis major - sternocostal head: anterior surface of sternum and
upper 6 costal cartilages.
Clavicular head: clavicle
Insertion of the pectoralis major - Lateral lip of the intertubercular groove,
humerus
Actions of the pectoralis major - Adduction and medial rotation
Actions of the clavicular head of the pectoralis major - flexion of humerus
Action of the Sternocostal head of the pectoralis major - extension of humerus
from flexed position
Innervation of the clavicular head of pectoralis major m. - lateral pectornal nerve,
(C5, C6, C7)
Innervation of the sternocostal head of the pectoralis major m. - Medial pectoral
nerve (C8, T1)
, Innervation of the sternocostal head of the pectoralis major - medial pectoral
nerve (C8, T1)
Origin of the pectoralis minor - ribs 3-5
Insertion of the pectoralis minor - coracoid process, scapula
Actions of the pectoralis minor - Scapular stabilization, scapular protraction,
depresses acromion, accessory muscle of inspiration
Innervation of pectoralis minor - medial pectoral nerve (C8, T1)
Origin of subclavius - 1st rib and costal cartilage
insertion of subclavius - inferior surface of the clavicle
actions of the subclavius - anchors and depresses clavicle
Innervation of subclavius - N. to subclavius (C5, C6)
Serratus anterior origin - ribs 1-8
Insertion of the serratus anterior - medial border of scapula, anterior surface
