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Muscular System > LEC > Flashcards

LEC Flashcards

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

A

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

22
Q

Sternocleidomastoid

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

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

A

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

25
Q

Deep back muscles

A

o: vertebrae
i: vertebrae
a: extend vertebral column & help bend vertebral column laterally

26
Q

Scalenes

A

o: cervical vertebrae
i: first & second ribs
a: inspiration; elevate ribs

27
Q

External intercostals

A

o: inferior edge of each rib
i: superior edge of next rib below origin
a: inspiration; elevate ribs

28
Q

Internal intercostals

A

o: superior edge of each rib
i: inferior edge of next rib above origin
a: forced expiration; depress ribs

29
Q

Diaphragm

A

o: inferior ribs, sternum, and lumbar vertebrae
i: central tendon of diaphragm
a: inspiration; depress floor of thorax

30
Q

Rectus abdominis

A

o: pubic crest & pubic symphysis
i: xiphoid process & inferior ribs
a: flexes vertebral column; compresses abdomen

31
Q

External abdominal oblique

A

o: Ribs 5-12
i: iliac crest, inguinal ligaments & fascia of rectus abdominis
a: compresses abdomen; flexes & rotates vertebra; column

32
Q

Internal abdominal oblique

A

o: Iliac crest, inguinal ligament, & lumbar fascia
i: ribs 10-12 & fascia of rectus abdominis
a: compresses abdomen; flexes & rotates vertebral column

33
Q

Transversus abdominis

A

o: costal cartlages 7-12, lumbar fascia, iliac crest, & inguinal ligament
i: xiphoid process, fascia of rectus abdominis, & pubic tubercle
a: compresses abdomen

34
Q

Levator ani

A

o: posterior pubic & ischial spine
i: sacrum & coccyx
a: elevates anus; supports pelvic viscera

35
Q

Bulbospongiosus

A

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
Q

Ischiocavernosus

A

o: ischial ramus
i: corpus cavernosum
a: compresses base of penis or clitoris

37
Q

External & sphincter

A

o: coccyx
i: central tendon of perineum
a: keeps orifice of anal canal closed

38
Q

Transverse perinei deep

A

o: ischial ramus
i: midline connective tissue
a: supports pelvic floor

39
Q

Transverse perinei superficial

A

o: ischial ramus
i: central tendon of perineum
a: fixes central tendon

40
Q

Levator scapulae

A

o: transverse process of c1-c4
i: superior angle of scapula
a: elevates, retracts, & rotates scapula, laterally flexes neck

41
Q

Pectoralis minor

A

o: ribs 3-5
i: coracoid process of scapula
a: depresses scapula or elevates ribs

42
Q

Rhomboids major

A

o: spinous processes of t1-t4
i: medial border of scapula
a: retracts, rotates & fixes scapula

43
Q

Rhomboids minor

A

o: spinous processes of t1-t4
i: medial border of scapula
a: retracts, slightly elevates, rotates. & fixes scapula

44
Q

Serratus anterior

A

o: ribs 1-9
i: medial border of scapula
a: rotates & protracts scapula; elevates ribs

45
Q

Trapezius (scapula)

A

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
Q

Deltoid

A

o: clavicle, acromion process, and scapular spine
i: deltoid tuberosity
a: flexes & extends shoulder; abducts & medially & laterally rotates arm

47
Q

Latissimus dorsi

A

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
Q

Pectoralis major

A

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
Q

Teres major

A

o: lateral border of scapula
i: medial crest of intertubercular groove
a: extends shoulder; adducts & medially rotates arm

50
Q

Infraspinatus

A

o: infraspinous fossa of scapula
i: greater tubercle of humerus
a: stabilizes & extends shoulder & laterally rotaes arm

51
Q

Subscapularis

A

o:
i:
a:

Muscular System (1 decks)

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