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LEC Flashcards

(51 cards)

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1
Q

Buccinator

A

o: maxilla and mandible
i: orbicularis oris at angle of mouth
a: retracts angle of mouth; flattens cheek

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2
Q

Depressor anguli oris

A

o: lower border of mandible
i: skin of lip near angle of mouth
a: depresses angle of mouth

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3
Q

Levator labii superioris

A

o: maxilla
i: skin & orbicularis oris of upper lip
a: elevates upper lip

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4
Q

Occipitofrontalis

A

o: Occipital bone
i: skin of eyebrow and nose
a: moves scalp; elevates eyebrows

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5
Q

Orbicularis oculi

A

o: Maxilla and frontal bones
i: circles orbit and inserts near origin
a: closes eye

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6
Q

Orbicularis oris

A

o: Nasal septum, maxilla, and mandible
i: fascia and other muscles of lips
a: closes lip

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7
Q

Zygomaticus major

A

o: zygomatic bone
i: angle of mouth
a: elevates & abducts upper lip & corner of mouth

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8
Q

Zygomaticus minor

A

o: Zygomatic bone
i: orbicularis oris of upper lip
a: elevates & abducts upper lip

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9
Q

Temporalis

A

o: temporal fossa
i: anterior portion of mandibular ramus and coronoid process
a: elevates & retracts mandible; involved in excursion

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10
Q

Masseter

A

o: zygomatic arch
i: lateral side of mandibular ramus
a: elevates & protracts mandible; involved in excursion

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11
Q

Lateral pterygoid

A

o: lateral pterygoid plate & greater wing of sphenoid
i: condylar process of mandible & articular disk
a: protracts & depresses mandible; involved in excursion

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12
Q

Medial pterygoid

A

o: lateral pterygoid plate of sphenoid & tuberosity of maxilla
i: medial surface of mandible
a: protracts & elevates mandible; involved in excursion

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13
Q

Intrinsic tongue

A

o: inside tongue
i: inside tongue
a: changes shape of tongue

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14
Q

Extrinsic tongue

A

o: bones around oral cavity or soft palate
i: onto tongue
a: moves tongue

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15
Q

Suprahyoid

A

o: base of skull, mandible
i: hyoid bone
a: elevates or stabilizes hyoid

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16
Q

Intrahyoid

A

o: sternum, larynx
i: hyoid bone
a: depresses or stabilizes hyoid

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17
Q

Soft palate

A

o: skull or soft palate
i: palate, tongue or pharynx
a: moves soft palate, tongue or pharynx

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18
Q

Elevators

A

o: soft palate & auditory tubes
i: pharynx
a: elevate pharynx

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19
Q

Constrictors

A

o: larynx & hyoid
i: pharynx
a: constrict pharynx

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20
Q

Flexors

A

o: anterior side of vertebrae
i: base of skull
a: flex head and neck

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21
Q

Extensors

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A

o: posterior side of vertebrae
i: base of skull
a: extend head and neck

22
Q

Sternocleidomastoid

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A

o: manubrium of sternum & medial part of clavicle
i: mastoid process & muchal line of skull
a: individually rotate head; together flex neck

23
Q

Trapezius

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A

o: posterior surface of skull & upper vertebral column
i: clavicle, acromion process, and scapular spine
a: extends & laterally flexes neck

24
Q

Erector spinae

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A

o: sacrum, ilium, vertebrae & ribs
i: ribs, vertebrae, and skull
a: extends vertebral column

25
Deep back muscles
o: vertebrae i: vertebrae a: extend vertebral column & help bend vertebral column laterally
26
Scalenes
o: cervical vertebrae i: first & second ribs a: inspiration; elevate ribs
27
External intercostals
o: inferior edge of each rib i: superior edge of next rib below origin a: inspiration; elevate ribs
28
Internal intercostals
o: superior edge of each rib i: inferior edge of next rib above origin a: forced expiration; depress ribs
29
Diaphragm
o: inferior ribs, sternum, and lumbar vertebrae i: central tendon of diaphragm a: inspiration; depress floor of thorax
30
Rectus abdominis
o: pubic crest & pubic symphysis i: xiphoid process & inferior ribs a: flexes vertebral column; compresses abdomen
31
External abdominal oblique
o: Ribs 5-12 i: iliac crest, inguinal ligaments & fascia of rectus abdominis a: compresses abdomen; flexes & rotates vertebra; column
32
Internal abdominal oblique
o: Iliac crest, inguinal ligament, & lumbar fascia i: ribs 10-12 & fascia of rectus abdominis a: compresses abdomen; flexes & rotates vertebral column
33
Transversus abdominis
o: costal cartlages 7-12, lumbar fascia, iliac crest, & inguinal ligament i: xiphoid process, fascia of rectus abdominis, & pubic tubercle a: compresses abdomen
34
Levator ani
o: posterior pubic & ischial spine i: sacrum & coccyx a: elevates anus; supports pelvic viscera
35
Bulbospongiosus
o: male- central tendon of perineum i: m- dorsal surface of penis & bulb of penis f- base of clitoris a: m- constricts urethra; erects penis f- erects clitoris
36
Ischiocavernosus
o: ischial ramus i: corpus cavernosum a: compresses base of penis or clitoris
37
External & sphincter
o: coccyx i: central tendon of perineum a: keeps orifice of anal canal closed
38
Transverse perinei deep
o: ischial ramus i: midline connective tissue a: supports pelvic floor
39
Transverse perinei superficial
o: ischial ramus i: central tendon of perineum a: fixes central tendon
40
Levator scapulae
o: transverse process of c1-c4 i: superior angle of scapula a: elevates, retracts, & rotates scapula, laterally flexes neck
41
Pectoralis minor
o: ribs 3-5 i: coracoid process of scapula a: depresses scapula or elevates ribs
42
Rhomboids major
o: spinous processes of t1-t4 i: medial border of scapula a: retracts, rotates & fixes scapula
43
Rhomboids minor
o: spinous processes of t1-t4 i: medial border of scapula a: retracts, slightly elevates, rotates. & fixes scapula
44
Serratus anterior
o: ribs 1-9 i: medial border of scapula a: rotates & protracts scapula; elevates ribs
45
Trapezius (scapula)
o: posterior surface of skull & spinous processes of c7-t12 i: clavicle, acromion process & scapular spine a: elevates, depresses, retracts, rotates, and fixes scapula; extends neck
46
Deltoid
o: clavicle, acromion process, and scapular spine i: deltoid tuberosity a: flexes & extends shoulder; abducts & medially & laterally rotates arm
47
Latissimus dorsi
o: spinous processes of t7-l5, sacrum & iliac crest, & inferior angle of scapua in some people i: medial crest oof intertubercular groove a: extends shoulder; adducts & medially rotates arm
48
Pectoralis major
o: clavicle, sternum, superior six costal cartilages, and abdominal muscles i: lateral crestof intertubercular groove a: flexes shoulder; extends shoulder from flexed position; adducts & medially rotates arm
49
Teres major
o: lateral border of scapula i: medial crest of intertubercular groove a: extends shoulder; adducts & medially rotates arm
50
Infraspinatus
o: infraspinous fossa of scapula i: greater tubercle of humerus a: stabilizes & extends shoulder & laterally rotaes arm
51
Subscapularis
o: i: a:

Muscular System (1 decks)

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