MBlex Action, Insertion, and Origins of
Muscles Questions and Answers.
How many cervical vertebrae are there? -
\7
How many thoracic vertebrae are there? -
\12
How many lumbar vertebrae are there? -
\5
How many pairs of ribs are there? -
\12
Which pair of ribs are true? -
\Pairs 1-7
Which pair of ribs are false? -
\Pairs 8-12
Which pair of ribs are floating? -
\Pairs 11-12
Origin -
\attachment of a muscle that remains relatively fixed during muscular contraction
Insertion -
\attachment of a muscle on a bone that moves during muscular contraction
Origin of the Deltoid: -
\clavicle, acromion, spine of scapula
Insertion of the Deltoid: -
\deltoid tuberosity
Action of the Deltoid: -
\abduction, medial rotation, flexion
Origin of Trapezius: -
\occipital bone, C7-T12
Insertion of Trapezius: -
\clavicle, acromion, spine of scapula
, Action of Trapezius: -
\elevation, upward rotation, retraction, depression
Origin of Serratus Anterior: -
\ribs 1-8
Insertion of Serratus Anterior: -
\medial border of scapula
Action of Serratus Anterior: -
\pulls shoulder forward, protraction, upward rotation, stabilization
Origin of Pec Major: -
\clavicle, sternum, coastal cartilage of ribs 1-6
Insertion of Pec Major: -
\bicipital groove
Action of Pec Major: -
\flexes upper arm, adducts arm anteriorly, medial rotation, horizontally adducts arm
across chest
Origin of Pec Minor: -
\ribs 3-5
Insertion of Pec Minor: -
\coracoid process
Action of Pec Minor: -
\pulls shoulder down and forward, abducts scapula
Origin of Latissimus Dorsi: -
\aponeurosis from T7 to iliac crest, lower 3 or 4 ribs, inferior angle of scapula
Insertion of Latissimus Dorsi: -
\bicipital groove
Action of Latissimus Dorsi: -
\extends upper arm, adducts upper arm, medial rotation of arm
Origin of Teres Major: -
\inferior angle of scapula
Insertion of Teres Major: -
\bicipital groove
Muscles Questions and Answers.
How many cervical vertebrae are there? -
\7
How many thoracic vertebrae are there? -
\12
How many lumbar vertebrae are there? -
\5
How many pairs of ribs are there? -
\12
Which pair of ribs are true? -
\Pairs 1-7
Which pair of ribs are false? -
\Pairs 8-12
Which pair of ribs are floating? -
\Pairs 11-12
Origin -
\attachment of a muscle that remains relatively fixed during muscular contraction
Insertion -
\attachment of a muscle on a bone that moves during muscular contraction
Origin of the Deltoid: -
\clavicle, acromion, spine of scapula
Insertion of the Deltoid: -
\deltoid tuberosity
Action of the Deltoid: -
\abduction, medial rotation, flexion
Origin of Trapezius: -
\occipital bone, C7-T12
Insertion of Trapezius: -
\clavicle, acromion, spine of scapula
, Action of Trapezius: -
\elevation, upward rotation, retraction, depression
Origin of Serratus Anterior: -
\ribs 1-8
Insertion of Serratus Anterior: -
\medial border of scapula
Action of Serratus Anterior: -
\pulls shoulder forward, protraction, upward rotation, stabilization
Origin of Pec Major: -
\clavicle, sternum, coastal cartilage of ribs 1-6
Insertion of Pec Major: -
\bicipital groove
Action of Pec Major: -
\flexes upper arm, adducts arm anteriorly, medial rotation, horizontally adducts arm
across chest
Origin of Pec Minor: -
\ribs 3-5
Insertion of Pec Minor: -
\coracoid process
Action of Pec Minor: -
\pulls shoulder down and forward, abducts scapula
Origin of Latissimus Dorsi: -
\aponeurosis from T7 to iliac crest, lower 3 or 4 ribs, inferior angle of scapula
Insertion of Latissimus Dorsi: -
\bicipital groove
Action of Latissimus Dorsi: -
\extends upper arm, adducts upper arm, medial rotation of arm
Origin of Teres Major: -
\inferior angle of scapula
Insertion of Teres Major: -
\bicipital groove
