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A&P I > Individual Skeletal Muscles > Flashcards

Individual Skeletal Muscles Flashcards

(53 cards)

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0
Q

Temporalis

A

Origin: temporal bone
Insertion: coronoid process and ramus of mandible
Action: elevates and retracts mandible

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1
Q

Orbicularis oculi

A

Origin: medial wall of orbit
Insertion: circular path around orbit
Action: closes eye

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2
Q

Masseter

A

Origin: maxilla and zygomatic arch
Insertion: angle and ramus of mandible
Action: elevates mandible

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3
Q

Buccinator

A

Origin:alveolar processes of maxilla and mandible and pterygomandibular raphe
Insertion: orbicularis oris
Action: presses cheeks against teeth, draws corner of mouth laterally, assists in mastication

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4
Q

Zygomaticus major

A

Origin: zygomatic bone
Insertion: skin at angle of mouth and orbicularis oris
Action: draws angle of mouth superior and lateral, smiling

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5
Q

Zygomaticus minor

A

Origin: zygomatic bone
Insertion: upper lip
Action: raises upper lip exposing upper teeth

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6
Q

Orbicularis oris

A

Origin: muscle fibers surrounding opening of mouth
Insertion: skin at corner of mouth
Action: closes and protrudes lip kissing, compresses lip against teeth, shapes lips during speech

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7
Q

Sternocleidomastoid

A

Origin: sternal head, manubrium, clavicular head, medial clavicle
Insertion: mastoid process of temporal, lateral superior nuchal line of occipital
Action: bilaterally flex cervical portion of neck, extend head at joint. Unilaterally laterally flex head and neck to side and rotate

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8
Q

Platysma

A

Origin: facia over deltoid and pectoralis major muscles
Insertion: mandible
Action: tenses skin of neck, draws outer part of lower lip inferior and posterior as in pout, depresses mandible

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9
Q

Trapezius

A

Origin: superior nuchal line of occipital and c7 to t12
Insertion: clavicle and acromion and spine of scapula
Action: upward rotate scapula, adduct scapula, stabilize scapula

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10
Q

Deltoid

A

Origin: acromial of clavicle and scapula, spine of scapula
Insertion: deltoid tuberosity of humerus
Action: abduct arm, flex and medially rotate arm, extend and laterally rotate arm

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11
Q

Supraspinatus

A

Origin: supraspinous fossa of scapula
Insertion: greater tubercle of humerus
Action: assist deltoid in abducting arm

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12
Q

Infraspinatus

A

Origin: infraspinous fossa of scapula
Insertion: greater tubercle of humerus
Action: laterally rotate arm

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13
Q

Teres major

A

Origin: inferior angle of scapula
Insertion: medial lip of intertubercular sulcus of humerus
Action: extend arm, assist in adduction and medial rotation of arm

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14
Q

Teres minor

A

Origin: inferior lateral border of scapula
Insertion: greater tubercle of humerus
Action: laterally rotate and extend arm

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15
Q

Rhomboid major, minor

A

Origin: major t2 to t5, minor c7 to t1
Insertion: vertical border of scapula inferior to spine
Action: stabilize scapula, elevates and adducts scapula and rotates down

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16
Q

Latissimus dorsi

A

Origin: t7 to l5, sacrum, ilium, ribs 9-12
Insertion:intertubercular sulcus of humerus
Action: extends, adducts, medially rotates arm, draws arm inferior and posterior

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17
Q

Triceps brachii

A

Origin: scapula, humerus, humerus
Insertion: olecranon
Action: extends forearm at elbow, arm

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18
Q

Biceps brachii

A

Origin: scapula above glenoid, coracoid process of scapula
Insertion: radial tuberosity, bicipital aponeurosis
Action: flexes forearm, supinates forearm, flexes arm

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19
Q

Brachialis

A

Origin: distal anterior humerus
Insertion: ulnar tuberosity and coronoid process of ulna
Action: flexes forearm

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20
Q

Brachioradialis

A

Origin: lateral distal humerus
Insertion: superior to styloid process of radius
Action: flexes forearm, supinates and pronates forearm to neutral

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21
Q

Flexor retinaculum

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A

Thick deep fascia at palm side of wrist. Hold in flexor tendons, median nerve.

22
Q

Pectoralis major

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A

Origin: clavicle, sternum, costal cartilages 2-6
Insertion: humerus
Action: flex, adducts, and medially rotates arm (whole), extends flexed arm to side of trunk

23
Q

Pectoralis minor

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A

Origin: ribs 2-5
Insertion: coracoid process of scapula
Action: abducts scapula and rotates down

24
Serratus anterior
Origin: ribs 1-9 Insertion: vertebral border, scapula Action: abducts/protracts scapula and rotates up. Boxers muscle
25
Intercostals
Origin: internal lower rib, external upper rib Insertion: upper rib, lower rib Action: exhalation, inhalation
26
transversus abdominis
Origin: iliac crest, inguinal ligament, lumbar fascia, ribs 5-10 Insertion: xiphoid process, linea alba, pubis Action: compresses abdomen
27
external oblique
Origin: ribs 5-12 Insertion: iliac crest and linea alba Action: bilaterally compress abdomen, unilaterally laterally flex and rotate vertebral column
27
Rectus abdominis
Origin: pubic crest and pubic symphysis Insertion: cartilage of ribs 5-12, xiphoid process Action: flex vertebrae column, compresses abdomen to aid in pee, defecate, forced exhale, childbirth
27
Diaphragm
Origin: xiphoid process, costal cartilages and ribs 7-12, lumbar vertebrae Insertion: central tendon Action: inhalation, exhalation
28
Internal oblique
Origin: iliac crest, inguinal ligament Insertion: linea alba, cartilage of ribs 5-12 Action: compress abdomen, laterally flex and rotate vertebral column
29
Gluteus medius
Origin: ilium Insertion: greater trochanter of femur Action: abducts thigh, medially rotates thigh
30
Gluteus maximus
Origin: iliac crest, sacrum, coccyx, aponeurosis of sacrospinalis Insertion: iliotibial tract, gluteal tuberosity under greater trochanter Action: extends thigh, laterally rotates thigh, helps lock knee
31
Sartorius
Origin: anterior superior iliac spine Insertion: medial tibia Action: weakly flexes leg at knee, weakly abducts, flexes, laterally rotates thigh at hip
32
Adductor longus
Origin: pubic crest and pubic symphysis Insertion: linea aspera of femur Action: adducts and flexes thigh, medially rotates thigh
33
Gracilis
Origin: pubis Insertion: tibia Action: adducts thigh, medially rotates thigh, flexes leg at knee
36
Calcaneal (achilles) tendon
Origin: soleus and gastrocnemius Insertion: calcaneus Action: plantar flex
37
Gastrocnemius
Origin: lateral and medial condyles of femur, capsule of knee Insertion: calcaneus Action: plantar flexes foot, flexes leg at knee
38
Soleus
Origin: head of fibula, medial tibia Insertion: calcaneus Action: plantar flexes foot
39
Tibialis anterior
Origin: lateral condyle and body of tibia, interosseous membrane Insertion: metatarsal 1 and first cuneiform Action: dorsiflexes foot and supinates foot
40
Rectus femoris
Origin: anterior inferior iliac spine Insertion: patella then tibial tuberosity Action: extend leg at knee, flex thigh at hip
40
Vastus lateralis
Origin: greater trochanter of femur Insertion: patella then tibial tuberosity Action: extend leg at knee
41
Quadriceps femoris (4x)
Rectus femoris Vastus lateralis Vastus intermedius Vastus medialis
42
Vastus medialis
Origin: linea aspera of femur Insertion: patella then tibial tuberosity Action: extend leg at knee
44
Vastus intermedius
Origin: anterior and lateral femur Insertion: patella then tibial tuberosity Action: extend leg at knee
45
Hamstrings (3x)
Biceps femoris Semitendinosus Semimembranosus
46
Biceps femoris
Origin: ischial tuberosity, linea aspera of femur Insertion: head of fibula and lateral condyle of tibia Action: flexes leg at knee, extends thigh at hip
46
Semitendinosus
Origin: ischial tuberosity Insertion: proximal medial tibia Action: flexes leg at knee, extends thigh at hip
46
Semimembranosus
Origin: ischial tuberosity Insertion: medial condyle of tibia Action: flexes leg at knee, extends thigh at hip
47
Thenar (3x)
Abductor pollicis brevis Opponens pollicis Flexor pollicis brevis Adductor pollicis
47
Hypothenar eminence (3x)
Abductor digiti minimi Flexor digiti minimi brevis Opponens digiti minimi
48
Strap (ribbon) muscles (4x)
Omohyoid Sternohyoid Sternothyroid Thyrohyoid
48
Rotator (musculotendinous) cuff (4x)
``` Subscapularis Supraspinatus Infraspinatus Teres minor Nearly complete circle of flat tendons from these 4 muscles, strengthen and stabilize. ```

A&P I (10 decks)

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