Section 1
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teres minor
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Last updated
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Date created
Mar 14, 2020
Cards (114)
Section 1
(50 cards)
teres minor
origin: lateral border of the scapula insertion: greater tuberosity of the humerus innervation: axillary nerve action: external rotation of the arm (rotator cuff)
serratus posterior inferior
origin: T11- L2 insertion: Ribs #8- #12 innervation: spinal nerve (ventral rami) action: depresses ribs
semispinalis thoracis
origin: T6-T12 transverse processes insertion: C6-T4 spinous processes innervation: dorsal rami action:extension of the thoracic and cervical spine as well as flexion to the same side and rotation to opposite side
ascending trapezius
this muscle is innervated by the CN XI nerve and acts to draw the scapula medially and downward
vertebral latissimus dorsi
origin: T7-T12 insertion: scapula innervation: thoracodorsal n. action: internal rotation,
Splenius capitis
origin: C7-T3 spinous process and ligamentum nuchae insertion: occipital bone innervation: occipital bone action: extension of the spine and head, flexion of the head and rotate head to same side
levator scapulae
origin: C1-C4 transverse processes insertion: scapula innervation: dorsal scapular n. actions: tilts head to same side, draws scapula upwards and medially (moves the inferior angle medially)
flexor digitorum superficialis
origin: humeral head: medial epicondyle ulnar head: coronoid process of the ulna insertion: sides of the middle phalanges #2-#5 innervation: median n. action: flexion at the wrist, at the digits at the MCP and PIP joints
pectoralis major
origin: clavicular part: medial half of clavicle sternocostal part: sternum and costal cartilages #2-#6 abdominal part: anterior layer of rectus sheath insertion: crest of greater tuberosity of the humerus innervation: medial and lateral pectoral nerve action: adduction and internal rotation of the shoulder
ascending trapezius
this muscle originates at the T5-T12 spinous processes and inserts at the scapular spine
opponens pollicis
origin: trapezium insertion: radial border of the 1st metacarpal innervation: median n. (recurrent branch) action: oppose thumb at the CMC joint
flexor digitorum profundus
origin: broad area of the ulna (anterior) and interosseus membrane insertion: palmar surface of distal phalanges #2-#5 innervation: median n. (#4,#5) and ulnar nerve (#2,#3) action: flexion at teh wrist, MCP, PIP and DIP joints
flexor pollicis brevis
origin: deep head: capitate and trapezium superficial head: trapezoid and flexor retinaculum insertion: base of proximal phalanx of thumb innervation: recurrent branch of the median n. action: flex thumb at CMC joint
costal latissimus dorsi
origin: ribs #9-#12 insertion: lesser tuberosity of the humerus innervation: thoracodorsal nerve action: medial rotation, adduction and extension at the shoulder
spinalis thoracis
origin: T10-L3 insertion: C2-C5 innervation: dorsal rami action: extension of the spine and bend spine to same side
thenar eminence
flexor pollicis breves, opponens pollicis, abductor pollicis breves
flexor digiti minimi
origin: hamate hook and flexor retinaculum insertion: proximal phalanx of 5th digit innervation: ulnar n. action: flexion of the 5th digit at the MCP joint
obliquus capitis superior
origin: C1 transverse process insertion: occipital bone innervation: suboccipital nerve action: tilt head to same side and rotate to opposite side
abductor pollicis brevis
origin: trapezium, flexor retinaculum insertion: proximal phalanx of thumb innervation: recurrent branch of the median n. action: abduct thumb at CMC joint
erector spinae
spinalis, logissimus, iliocostalis
iliocostalis cervicis
origin: ribs #5-#7 insertion: C4-C6 innervation: dorsal rami action: extension of the spine, and bend the spine to the same side
teres major
origin: inferior angle of the scapula insertion: crest of lesser tuberosity of the humerus innervation: lower subscapular nerve action: internal rotation, adduction, and extension (weak) at the shoulder joint
abductor digiti minimi
origin: pisiform insertion: ulnar base of proximal phalanx of the 5th digit innervation: ulnar n. action: flexion and abduction of the 5th digit at the MCP joint and extension at the PIP and DIP joints
rhomboid major
origin: T1-T4 insertion: below the scapular spine innervation: dorsal scapular nerve action: move scapula medial and upward
splenius cervicis
origin: T3-T6 transverse processes insertion: C1-C2 spinous processes innervation: dorsal rami action: extension of the spine and head, flexion of the head and rotate head to same side
iliac latissimus dorsi
origin: posterior 1/3 of iliac crest insertion: lesser tuberosity of the humerus innervation: thoracodorsal nerve action: medial rotation, adduction and extension at the shoulder
serratus anterior
origin: #1-#9 ribs insertion: medial border of the scapula innervation: long thoracic nerve (off the roots) action: draws scapula laterally for protraction and rotates scapula laterally for aiding in abduction
infraspinatus
origin: infraspinous fossa insertion: greater tuberosity of the humerus innervation: suprascapular nerve action: external rotation at the shoulder (rotator cuff)
spinalis cervicis
origin: C5-T12 insertion: C2-C5 innervation: dorsal rami action: extension of cervical and thoracic spine, abduct to the same side
iliocostalis thoracis
origin: Ribs #7-#12 insertion: ribs #1-#6 innervation: dorsal rami action: extension of the spine and bend spine to same side
semispinalis capitis
origin: C4-C7 transverse processes and articular processes insertion: occipital bone innervation: dorsal rami action:extension of the thoracic and cervical spine as well as flexion to the same side and rotation to opposite side
subcapularis
origin: subscapular fossa insertion: lesser tuberosity of the humerus innervation: subscapular nerve action: internal rotation at the shoulder
rectus capitis major
origin: C2 spinous process insertion: occipital bone, inferior nuchal line, innervation: suboccipital nerve action: extension of the head and rotation to same side
semispinalis cervicis
origin: T1-T6 transverse processes insertion:C2-C5 spinous processes innervation: dorsal rami action:extension of the thoracic and cervical spine as well as flexion to the same side and rotation to opposite side
hypothenar eminence
abductor digiti minimi flexor digiti minimi opponens digiti minimi
longissimus capitis
origin: T1-T3 transverse processes/ C4-C7 transverse processes and articular processes insertion: temporal bone innervation: dorsal rami action: extension of the head and flexion and rotation to same side
descending trapezius
this muscle originates at the occipital lobe/ C1-C7 and inserts at clavicle
supraspinatus
origin: supraspinous fossa insertion: greater tuberosity of the humerus innervation: suprascapular nerve action: initiation of abduction at the shoulder joint (rotator cuff)
Rhomboid minor
origin: C6-C7 insertion: above the scapular spine innervation: dorsal scapular nerve action: medial and upward movement of the scapula
triceps brachii
origin: Long head: infraglenoid tubercle of scapular lateral head: posterior humerus superior to radial groove medial head: medial intermuscular septum insertion: olecranon process of the ulna innervation: radial nerve action: extension and adduction at the shoulder, extension at the elbow ( only major extensor of the elbow!)
obliquus capitis inferior
origin: C2 spinous process insertion: C1 transverse process innervation: suboccipital nerve action: extension of the head and rotation to same side
scapular latissimus dorsi
origin: inferior angle of the scapula insertion: lesser tuberosity of the humerus innervation: thoracodorsal nerve action: internal rotation, adduction and extension of the upper limb
iliocostalis lumborum
origin: scarum, iliac crest insertion: Ribs #6-#12 innervation: dorsal rami action: extension of the spin and bend to the same side
recuts capitis minor
origin: C1 insertion: occipital bone innervation : suboccipital nerve action: extension of the head and rotation to same side
pectoralis minor
origin: #3-#5 rbs insertion: coracoid process innervation: medial pectoral nerve action: draws scapula downward
transverse trapezius
this muscle originates at T1-T4 spinous processes and inserts at the acromion
longissimus thoracis
origin: sacrum, iliac crest, lumbar insertion: lumbar and thoracic vertebrae innervation: dorsal rami action: extension of the head and flexion and rotation to same side
deltoid
origin: spinal part: scapular spine acromion part: acromion clavicular part: lateral third of the clavicle insertion: deltoid tuberosity of the humerus innervation: axillary nerve action: abduct the shoulder to 90 degrees, medial rotation and lateral rotation at the shoulder joint
longissimus cervicis
origin: T1-T6 insertion:C2-C5 innervation: dorsal rami action: extension of the head and flexion and rotation to same side
serratus posterior superior
origin: C7-T3 (spinous processes)/ ligamentum nuchae insertion: Ribs #2-#4 innervation: 2-5 intercostal nerves action: elevates ribs
Section 2
(50 cards)
cephalic vein
this vein ascends lateral to the body along the arm
flexor carpi radialis
origin: medial epicondyle insertion: base of 2nd metacarpal innervation: median n. action: flexion at the wrist, radial adduction at the wrist
opponens digiti minimi
origin: hamate hook and flexor retinaculum insertion: ulnar border of 5th metacarpal innervation: ulnar n. action: touch the thumb (oppose the pinky)
brachialis
origin: along the anterior humerus insertion: ulnar tuberosity innervation: musculocutaneous n. action: flexion at the elbow joint
extensor carpi radialis breves
origin: lateral epicondyle insertion: 3rd metacarpal base (both breves and longus pass under the extensor retinaculum) innervation: radial n. action: extension at wrist and radial deviation
triangular space
this structure is bounded by the teres major, teres minor and the long head of the triceps brachii; it contains the circumflex scapular artery
lumbricals
4 profundus tendons give rise to these muscles origin: 1st lumbrical originates on the radial side of the tendon of the flexor digitorum profundus insertion: 2nd digit's dorsal digital expansion (radial side of the extensor mechanism) innervation:Median nerve (2,3 lumbricals) ulnar nerve (3,4 lumbricals) action: Flex the #2-#5 digits at the MCP, PIP, and DIP
extensor pollicis longus
origin: radius insertion: base of 1st distal phalanx innervation: radial n. deep branch action: extension of the thumb at the PIP, DIP and MP joints
palmar interossei
origin: (1st one) Ulnar side of the 2nd metacarpal bone ( 3 total that follow similar pattern, skips 3rd digit) insertion:Dorsal digital expansion of the 2nd digit and base of proximal phalanx of 2nd digit innervation: ulnar action: Flex at the 2,4,5 digits at the MCP joint and extend at PIP and DIP; also adduct 2,4,5 toward 3rd digit
brachioradialis
This muscle is part of the POSTerior compartment of the forearm origin: along the humerus insertion: distal edge of the radius innervation: radial nerve action: flexion at the elbow
dorsal root ganglion
Swelling on the spinal nerve extending from the intervertebral foramen, location of sensory pseudounipolar neurons
extensor carpi radialis longus
origin: lateral epicondular ridge (just below brachioradialis) insertion: 2nd metacarpal base innervation: radial n. (deep branch) action: extension at the wrist and radial deviation (Important for powerful gripping because stretches the gripping muscles tight before action)
Posterior and anterior circumflex humeral arteries
Branches off the third part of the axillary artery: posterior goes to the quadrangular space with the axillary vein (larger than anterior)
lateral thoracic artery
Located in the second part of the axillary artery deep to the pectoralis minor with the thoracoacromial trunk, supplies serratus anterior and pectoralis major
arachnoid mater
this meninge is cohesive with the dura mater
extensor pollicis brevis
origin: ulna insertion:base of 1st proximal phalanx innervation: radial n. deep branch action: extension of the thumb at the PIP and DIP and MP joints
scapular notch
Boundaries: superior (above the spine) transverse scapular ligament, scapula Contains: the army goes over the bridge and the navy goes under suprascapular artery goes over the ligament and suprascapular nerve goes under
lumbosacral enlargement
this spinal cord enlargement signifies the origin of higher density of cell bodies for the lower limbs
pronator teres
origin:medial epicondyle and deep head inserts on the medial side of the ulna (median n. runs between the two heads) insertion: halfway down the lateral edge of the radius innervation: median n. action: pronation of the forearm
ligamentum flavun
this ligament connects adjacent laminae
quadrangular space
this structure is bounded by the humerus, long head of the triceps brachii, teres major and teres minor; it contains the axillary nerve and the posterior circumflex humeral artery
biceps brachii
origin: long head: Superior glenoid tubercle (passes through the bicipital groove) short head: Coracoid process of the scapula insertion: Both insert mainly on the radial tuberosity and fan out at the bicipital aponeurosis to indirectly attach to the ulnar innervation: musculocutaneous n. action: Flexion at the elbow joint; supination of the forearm When supinating, flexion action is held in check by opposing action of the triceps
walls of the axilla
Posterior wall: pectoralis major, pectoralis minor, clavipectoral fascia Lateral wall: Intertubercular groove of humerus Anterior wall: Subscapularis, teres major, latissimus dorsi Medial wall: lateral thoracic wall, serratus anterior
denticulate ligament
this ligament is an extension of the pia mater and divides the dorsal and ventral roots
conus medullaris
this structure is the end of the spine in the L2-L3 region
pia mater
this meninge contains extension called denticulate ligaments that separate dorsal and ventral roots
extensor carpi ulnaris
origin: lateral epicondyle and posterior border of the ulna insertion: base of 5th metacarpal innervation: radial n. (deep branch) action: extension at the wrist ; ulnar deviation
coracobrachialis
origin: along humerus insertion: coracoid process innervation: musculocutaneous n. action: shoulder adduction and flexion (forward and in)
pronator quadratus
origin: anteromedial aspect of ulnar insertion: anterior surface of radius innervation: median n. (anterior interosseus n.) action: pronation of the forearm
adductor pollicis
origin: transverse head: Palmar surface of 3rd metacarpal oblique head: Capitate bone and 2nd and 3rd metacarpal bones insertion:Base of proximal phalanx of thumb (merges with transverse head) innervation: ulnar action: adduct thumb at teh CMC joint and flex thumb at the MCP joint
basilic vein
this vein ascends medial to the body along the arm
deltopectoral groove
Boundaries: deltoid, pectoralise major, clavicle The cephalic vein can be traced into this structure
Subscapular artery
Located in the third part of the axillary artery distal to the pectoralis minor, turns into the thoracodorsal artery as it descends past the fifth rib (at the branch point)
extensor digitorum
origin: lateral epicondyle insertion: MIP joint (fan-like to feed into extensor hood) innervation: radial n. action: extension of digits, mainly the MIP joint
cauda equina
this structure in the lumbosacral region consists of loose nerve bundles that extend down past the end of the spinal cord
dura mater
this meninge is cohesive with the arachnoid
triceps hiatus
this structure (also named the triangular interval) is bounded by the triceps brachii (between the long and medial head) and the humerus; it contains the radial nerve and the profunda brachii artery
palmaris longus
This muscle is not always present origin: medial epicondyle insertion: palmaris aponeurosis innervation: median n. action: flexion at wrist
supinator
origin: lateral epicondyle, ridge of the ulnar called the supinator crest insertion: inner ridge of radius innervation: deep branch of the radial n. action: supination of the forearm
extensor indicis
origin: ulnar, interosseus membrane insertion: MIP joint, fan like to feed into extensor hood innervation: radial n. action: extension of the digits , mainly at the MP joint
suboccipital triangle
this structure is bounded by the obliquus capitis inferior, superior and the rectus capitis major; it contains the suboccipital nerve and the vertebral artery
thoracromial trunk
Branch from the second part of the axillary artery and has four branches: acromial, clavicular, pectoral and deltoid (Atlanta City Police Department)
supraspinous ligament
this ligament runs along the most posterior border of the vertebral column
dorsal interossei
origin: (1st one) two dead that originate from the 1st and 2nd metacarpal bones ( 4 total that follow a similar pattern) insertion: Dorsal digital expansion of the 2nd digits and the radial side of the proximal phalanx of the 2nd digit innervation: ulnar n. action: Flex the 2nd and 4th at the MCP joint and extend the 2nd and 4th at the DIP and PIP joints (when contract together!) and ulnar or radial deviation at MP joint (when contract separately!)
abductor pollicis longus
origin: radius and interosseus membrane of the posterior forearm insertion: base of 1st metacarpal innervation: radial n. deep branch action: abduction of the 5th digit
subarachnoid space
this space contains cerebrospinal fluid and enlarges in the lumbar region to facilitate lumbar punctures
cervical enlargement
this bulge of the spinal cord signifies the brachial plexus and nerve origins for the upper extremities
extensor digiti minimi
ulnar side of the extensor digitorum
flexor carpi ulnaris
origin: medial epicondyle, ulnar head arises from the posterior border of the ulnar (ulnar n. passes between the two as it enters the forearm) insertion: pisiform innervation: ulnar n. action: flexion at wrist; ulnar deviation of wrist
filum terminale internum
this extension of the pia mater attaches to the coccyx
Section 3
(14 cards)