Upper Muscles Flashcards
Erector spinal muscles action and innervation
Iliocostalis, longissimus, spinalis
Action: maintain posture, extend neck and trunk, rotate head
Innervates Dosi rami of cervical, thoracic, lumber spinal nerves
The erector spinae muscles:
Origin?
Iliocostalis, longissimus, and spinalis
Origin: sacrum, ilium, vertebrae, ribs
Splenius muscles
Origin?
Splenius capitis and splenius cervicis
Origin: ligamentum nuchae, c7, and upper thoracic vertebrae
Splenius capitis and splenius cervicis is deep back muscles
Insertion
Innervation
Inserts mastoid process of temporal bone, occipital bone, and cervical vertebrae
Innervates Dorsi rami of spinal nerves
Splenius capitis and splenius cervicis
Action
Extend neck, rotate head,
Trapezius innervation
Accessory n.
Trapezius insertion
Clavicle
Acromion
Spine of scapula
Trapezius action
Elevates
Retracts scapula
Trapezius origin
Occipital bone
Ligamentum nuchae
Spinous process c7- t12
Levator scapulae
Origin
Transverse process c1- c4
Levator scapulae
Action
Elevates scapula (shoulder up)
Levator scapulae
Insertion
Superior part, medial border of scapula
Rhomboid minor
Origin
Spinous processes c7-t1
Rhomboid minor
Insertion
Medial border of scapula
Rhomboid minor
Action
Retracts scapula
Rhomboid major
Action
Retracts scapula
Rhomboid major
Origin
Spinous processes t2-t5
Rhomboid major
insertion
Medial border of scapula
Serratus anterior
Origin
Ribs 1-8
Serratus anterior
Insertion
Medial border of scapula
Serratus anterior
Action
Action:
protracts, stabilize scapula
Subclavius
Origin
Rib 1
Subclavius
Insertion
Inferior surface of clavicle
Subclavius
Action
Stabilize, depresses clavicle
Pectoralis minor
Origin
Ribs 3-5
Pectoralis minor
Insertion
Coracoid process of scapula
Pectoralis minor
Action
Protracts scapula
Pectoralis major and minor in which part of body
Anterior
Pectoralis major
Origin
Medial clavicle
Sternum
Costal cartilage of ribs 2-6
Pectoralis major
Insertion
Crest of greater tubercle (humerus)
Pectoralis major
Action
Flexes
Adducts
Medially rotates shoulder joints
Latissimus Dorsi
Action
Extends
Adducts
Medially rotates shoulder joints
Latissimus dorsi
Origin
Spinous processes t7-t12
Thoracolumbar fascia
Iliac crest
Latissimus dorsi
Insertion
Intertubercular sulcus (humerus)
Pectoral is major and latissimus Dorsi muscles are from?
Axial skeleton to the humerus
Lists the muscles from the axial to shoulder girdle
8
Trapezius Serrated anterior Subclavius Pectoral is minor Ligamentum nuchae Levator scapulae Rhomboid major Rhomboid minor
Pectoral girdle (2) that attaches upper limbs to axial skeleton
Clavicle and scapula
Clavicle articulates with
Manubrium of the sternum
The acromial end of clavicle articulates with? Joint?
Acromian process of scapula
Acromialclavicular joint
Vertebrae column houses and what and how many bone it compromised?
Houses the spinal cord
26 individuals bones
Four curvatures of vertebrae columns
Cervical
Thoracic
Lumbar
Sacrococcygeal
Thoracic and sacrococcygeal (sacral and coccyx) are primary curvatures
Cervical and lumber are secondary curvatures
Intervertebral discs
Fibrocartilage discs (blue) Anatomical joint occur here is fibrocartilagious joint
Regions of vertebral column
- Cervical region c1-c7
- Thoracic region t1-t12
- Lumbar region L1- L5
- Sacral region s1-s5 fused to single bone
- Coccygeal region CO1-CO4 fused to single bone
Muscles from pectoral girdle (shoulder: clavicle and scapula) to humerus (6)
Teres major
Deltoid
Rotator cuff: Subscapularis Supraspinatus Infraspintus Teres minor
Deltoid and teres minor innervation
Axillary n.
Supraspintus infraspinatus and teres minor insertion
Greater tubercle of humerus
Deltoid innervation
Axillary n.
What muscles inserts in medial border of scapula
Rhomboid minor and major
Serrated anterior
Levant or scapulae (superior part)
What is the origin of muscle that inserts in acromion of scapula
Ligamentum nuchae
Spinous processes c7-t12
Occipital bone
(Trapezius)
What muscle originates in ribs 3-5?
Pectoral is minor
What muscles inserts in caracoid process of scapula
Pectoralis minor
What muscles originates in rib 1-8 ? Action?
Serratus anterior
Stabilizes, protracts scapula
Muscle origins rib 1? Action?
Subclvius
Stabilize, depress clavicle
Teres major origin
Inferior angle of scapula
Teres major insertion
Crest of lesser tubercle of humerus
Teres major action
Extends
Adducts
Medially rotate shoulder joints
Deltoid origin
Acromial end of clavicle
Acromion and spine of scapula
Muscle that originates here:
Acromial end of clavicle
Acromion and spine of scapula
Deltoid
Muscles that inserts here:
Acromion and spine of scapula
Trapezius
Deltoid insertion
Deltoid tuberosity of humerus
Deltoid action
Anterior: flexes shoulder j.
Lateral: abducts shoulder j
Posterior: extends shoulder joint
Deltoid lateral action
Abducts shoulder joints
Deltoid posterior action
Extends shoulder j.
Rotator cuff: (4)
Subscapularus
Infraspinatus
Supraspintus
Teres minor
Subscapularis origin
Subscapular fossa
Infraspinatus origin
Infraspinous fossa
Supraspintus muscle origin
Supraspinous fossa
Teres minor origin
Lateral border of scapula
Subscpular insertion
Lesser tubercule of humerus
Subscapularis action
Medially rotate shoulder joint
Suprispinatus insertion
Greater tubercle of humerus
Supraspinatus action
Abducts shoulder joint
Infraspinatus insertion
Greater tubercle of humerus
Infraspinatus action
Laterally rotate shoulder joint
Teres minor innervation
Axillary n.
Teres minor insertion
Greater tubercle of humerus
Teres minor action
Laterally rotate shoulder joint
Musculocutaneous n. Innervation what muscles (4):
Hint***anterior muscles of the arm
Coracobrachialis
Biceps brachii short head
Biceps brachii long head
Brachial is
Muscles that inserts radial tuberosity
Biceps brachii short head
Biceps brachii long head
What muscle origins coracoid process of scapula ?
Coracobrachialis
Also biceps brachii short head :)
(Do not be confused with insertion of coracoid process of scapula which is pectoral is minor)
Coracobrachialis insertion
Medial humerus
Coracobrachialis action
*anterior view
Flexes, adducts shoulder joint
Coracobrachialis innervation
Musculocutaneous n.
Biceps brachii short head origin
Coracoid process of scapula
Muscles that inserts radial tuberosity:
Biceps brachii
Short head
Long head
Biceps brachii :
Short head
Long head insertion
Radial tuberosity
Biceps brachii short and long head action
Flexes elbow joint
Supinates forearm
Brachialis action
Flexes elbow joint
Biceps brachii short head and long innervation
Musculocutaneos n
Brachialis original
Distal anterior humerus
Brachialis insertion
Coronoid process of ulna
Ulnar tuberosity
Brachialis innervates
Musculocutneous n.
What muscle inserts here: ulnar tuberosity and coronoid process of ulna
Brachialis
Muscles of arm that’s posterior (3)
Triceps brachii long head
Triceps brachii lateral head
Triceps brachii medial head
Triceps brachii long, lateral, medial head insertion
Olecranon process of ulna
Triceps brachii long, lateral, medial head innervation and action
Extends elbow joint
Innervated by radial n.
Triceps brachii long head origin
Infraglenoid tubercle of scapula
Triceps brachii lateral head origin
Middle posterior humerus
Triceps brachii medial head origin
Distal posterior humerus
What muscles inserts the olecranon process of ulna
Triceps brachii long, lateral, and medial head
Pronater teres origin
Medial epicondyle humerus
Coronoid process of ulna
Pronator teres insertion
Lateral surface of radius
Pronator teres action
Pronates forearm
Flexes elbow joint
Anterior forearm innervation median n.
One is ulna n.
Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor digitorum superficialis
Ulna nerve innervated by m. Flexor carpi ulnaris***
Flexor carpi radialis origin
Medial epicondyle of humerus
Flexor carpi radialis insertion
Palmar surface metacarpal II and III
Flexor carpi radialis action
Flexes wrist
Abducts hand
Palmaris longus origin
Medial epicondyle of humerus
Palmaris longus insertion
Palmar aponeurosis
Palmaris longus ACTION
Flexes wrist
Flexor carpi ulnaris OrIGIN
Medial epicondyle of humerus
Olecranon of ulna
Olecranon ulna muscle origin
Flexor carpi ulnaris
Flexor carpi ulnaris ACTION
Flexes wrist
Adducts hand
Flexor carpi ulnaris insertion
Pisiform
Hamate
Palmar surface of metacarpal V
Flexor digitorum superficialis ORIGIN
Medial epicondyle of humerus
Caronoid process ulna
Proximal anterior radius
Muscle origin coronoid process of ulna:
Pronator teres
Flexor digitorum superficialis
Flexor digitorum superficialis insertion
Palmar surface of middle phalanges of digits 2-5
Flexor digitorum superficialis aCTION
Flexes wrist
Flexes digits 2-5
Muscles ORIGIN lateral epicondyle of humerus 8:
Also innervated by radial n. Cuz posterior forearm
All posterior forearm
Brachioradilis, extensor carpi radialis longus,
Extensor carpi radialis brevis, extensor digitorum,
Extensor digiti minimi, extensor carpi ulnaris,
Anconeus, supinator (deep muscle)
Brachioradilis insertion
Styloid process radius
Brachioradialis action
Flex elbow j.
Extensor carpi radialis longus and extensor carpi radialis brevis action
Extends wrist
Abducts hand
Extensor carpi radialis longus insertion
Dorsal surface of metacarpal II
Extensor carpi radialis brevis insertion
Dorsal surface of metacarpal III
Extensor digitorum insertion
Dorsal surface digit 2-5
Extensor digitorum action
Extend wrist, fingers
Extensor digiti minimi insertion
Dorsal surface digit 5
Extensor digiti minimi action
Extends wrist, digit 5
Extensor carpi ulnaris insertion
Dorsal surface metacarpal V
Extensor carpi ulnaris action
Extend wrist
Adducts hand
Anconeus insertion
Olecranon of ulna
Flexor carpi ulnaris origin is this**
Anconeus ACTION
Extends elbow joint
Supinator (deep muscle) origin
Deep to pronator teres m.
Lateral epicondyle humerus
Proximal ulna
Supinator insertion
Proximal 1/3 radius
Supinator action
Supinates forearm
Blood flow
Brachiocephlic v, superior vena cava (inferior), -poor oxygenated), RA, tricuspid Valve, RV, pulmonary semilunar valve, pulmonary trunk, pulmonary artery, lungs-rich oxygen- pulmonary veins, LA, mitral valve, LV, aortic semilunar valve (aorta valve), aorta, body