Upper Limb 2 Flashcards
Concentric action
Shortening muscle
Role: Against
Eccentric action
Lengthening muscle
Role: Antagonist
Isometric action
Maintaining length
Role: Synergist/stabilizer
Pulling forward movement of the scapula?
Protraction
Moving backwards movement of the scapula?
Retraction
Lifting up movement of the scapula?
Elevation
Moving downwards movement of the scapula?
Depression
Moving upwards/downwards (circular) movement of the scapula?
Rotation
Movements of the shoulder?
Flexion, extension, abduction, adduction, rotation (med. & lat.)
Movements of the elbow?
Flexion, extension
Movements of the forearm?
Supination, pronation
Movements of the wrist?
Flexion, extension, abduction, adduction
Movements of the Metacarpophalangeal (fingers)?
Flexion, extension, abduction, adduction
Movements of the interphalangeal?
Flexion, extension
Movements of the metacarpophalangeal (thumb)?
Flexion, extension, abduction, adduction, opposition
Muscles of the pectoral girdle
Trapezius, pectoralis minor
Muscles of the shoulder
Deltoid, pectorals major, biceps brachii, triceps brachii
Muscles of the elbow
Biceps brachii, triceps brachii
Muscles of the forearm
Biceps brachii, supinator, pronator teres, pronator quadratus
Muscles of the wrist
Flexor carpi radialis, flexor carpi ulnaris, palmaris longus, extensor carpi radialis longus, extensor carpi radialis brevis, extensor carpi ulnas
Muscles of the hand & fingers
Extrinsic & intrinsic muscles
Trapezius muscle: anatomical location?
Posterior
Trapezius muscle: muscle shape?
Large, trapezoid shape
Trapezius muscle: attachments to what bones?
Base of skull & vertebrae -> clavicle & scapula
Trapezius muscle: functions?
Elevation (upper fibers)
Depression (lower fibres)
Retraction (middle fibres)
Pectoralis Minor Muscle: anatomical location?
Anterior
Pectoralis Minor Muscle: attachments to what bones?
Ribs (anterior surface 3-5) -> scapula (coracoid process)
Pectoralis Minor Muscle: function?
Protraction (of the scapula)
Deltoid muscle: anatomical location?
Lateral
Deltoid muscle: muscle shape?
Triangular
Deltoid muscle: attachments to what bones?
Scapula (posterior), clavicle (anterior), humerus (deltoid tuberosity)
Deltoid muscle: function?
Flexion (anterior fibres)
Abduction (middle/lat. fibres)
Extension (posterior fibers)
Pectoralis Major muscle: anatomical location?
Anterior
Pectoralis Major muscle: attachments to what bones?
Sternum, clavicle, ribs -> humerus (lateral shaft)
Pectoralis Major muscle: function?
Flexion, Med, rotation, adduction (of the arm, at the shoulder joint)
Biceps brachii muscle (shoulder): anatomical location?
Anterior (two heads)
Biceps brachii muscle (shoulder): function?
Flexion (accessory) - of the arm, at the shoulder joint
Triceps brachii muscle (shoulder): anatomical location?
Posterior (two heads)
Triceps brachii muscle (shoulder): function?
Extension, adduction - accessory
of the arm, at the shoulder joint
Biceps brachii muscle: anatomical location?
Anterior (two heads)
Biceps brachii muscle (elbow): attachments for what bones?
Scapula (supraglenoid tubercle, coracoid process) -> radius (radial tuberosity)
Biceps brachii muscle (elbow): function?
Flexion (of the forearm, at the elbow)
Triceps brachii muscle (elbow): anatomical location?
Posterior - three heads
Triceps brachii muscle (elbow): attachments for what bones?
Scapula (infraglenoid tubercle), humerus (shaft) -> ulna (olecranon process)
Triceps brachii muscle (elbow): function?
Extension (of the forearm, at the elbow)
Biceps brachii muscle (forearm): crosses what joint?
Proximal radio-ulnar joint
Biceps brachii muscle (forearm): attachments for what bones?
Scapula (supraglenoid tubercle, coracoid process) -> radius (radial tuberosity)
Biceps brachii muscle (forearm): function?
Supination (of the forearm, at the radio-ulnar joint)
Supinator muscle: anatomical location?
Anterior, proximal
Supinator muscle: attachments for what bones?
Humerus (lateral) -> radius (medial, supinator crest)
Supinator muscle: function?
Supination (accessory) - of the forearm, at the radio-ulnar joints
Pronator teres muscle: anatomical location?
Anterior, proximal
Pronator teres muscle: attachments for what bones?
Humerus (medial) -> radius
Pronator quadratus muscle: anatomical location?
Anterior, Distal
Pronator quadratus muscle: attachments for what bones?
Ulna -> radius
Pronator quadratus & teres muscle: function?
Pronation (of the forearm, at the radio-ulnar joints)
Flexor muscle group: anatomical location?
Anterior of the forearm, superior
Flexor muscle group (wrist)?
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor carpi ulnaris
Flexor muscle group (wrist): attachment for what bones?
Humerus (lateral epicondyle) -> metacarpals
Flexor muscle group (wrist): functions?
Extension (wrist)
Abduction/adduction (wrist)
Wrist Abduction uses what muscles?
Lateral Muscles
- Flexor carpi radialis
- Extensor carpi radialis longus
- Extensor carpi radialis brevis
Wrist Adduction uses what muscles?
Medial Muscles
- Flexor carpi ulnaris
- Extensor carpi ulnaris
Extrinsic hand muscles: attaches to?
Originate in the forearm
Insert (tendons) in the hand
Extrinsic hand muscles: function?
Forceful gripping (power grip)
Intrinsic hand muscles: attaches to?
Originate and insert entirely in the hand
Intrinsic hand muscles: function?
Precision movement (precision grip)