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Biol235 Quiz 3 > Chapter 11 > Flashcards

Chapter 11 Flashcards

1
Q

Occipitalfrontalis Frontal belly function

A

Draws scalp anteriorly , raises eyebrows, wrinkles skin horizontally as look of surprise

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2
Q

Occipital frontalis occipital belly function

A

Draw scalp posteriorly

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3
Q

Orbicularis oris function

A

Closed and protrudes lips as in kissing, compressed lips against teeth, shapes lips during speech

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4
Q

Zygomaticus major function

A

Draws angle of lips superiorly and laterally in smiling

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5
Q

Bucinator function

A

Pressed cheek against teeth and lips as in whistling, blowing and sucking
Draws corner of mouth laterally
Assists in mastication by keeping food between teeth not cheeks

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6
Q

Orbicularis oculi function

A

Closes eye

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7
Q

Muscles of mastication

A

Muscles that move mandible at TMJ

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8
Q

Masseter origin insertion action

A

O: maxilla and zygomatic arch
I: angle and ramus of mandible
A: elevated mandible as in closing mouth

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9
Q

Sternocleidomastoid origin insertion action RMA

A

O: Sternal head of manubrium of sternum, clavicular head, medial third of clavicle
I: mastoid process of temporal bone and lateral half of superior nuchal line of occipital bone
A:
acting bilaterally, flex cervical V, extend head at Atlanto-occipital joints
Acting singularly, laterally flex neck and head to same side and rotate head to opposite side of contracting muscle
Posterior fibers of muscle can assist in head elevation

RMA: elevate sternum durinf forced inhalation

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10
Q

Rectus abdominus origin insertion action RMA

A

O: pubic crest and pubic symphysis
I: cartilage or ribs 5-7 and xiphoid process
A: flexes VC especially lumbar, compresses abdomen for defecation, urination, forced exhalation, childbirth

RMA: flexes pelvis on the VC

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11
Q

External oblique function

A

Bilaterally: compress abdomen, flex VC
Unilaterally: lateral flex VC especially lumbar, rotate VC

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12
Q

Internal oblique function

A

Together: compress abdomen, flex VC
Singly: lateral flex VC especially lumbar, rotate VC

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13
Q

Transversus Abdominus insertion action

A

I: xiphoid process, linear albea, pubis
A: compress abdomen

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14
Q

Rectus sheaths

A

Aponeuroses of ex/in oblique and transversus abdominus,

Enclosed andominus muscles

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15
Q

Lines Alba

A

Tough fibrous band from xiphoid process to pubic symphysis

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16
Q

Central tendon

A

Strong aponeuroses located near the center of muscle

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17
Q

External intercostals action

A

Contraction=elevated ribs=^anteroposterior/lat of thoracic cavity=inhalation
Relaxation=exhalation

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18
Q

Internal intercostals action

A

Contraction=ribs drawn together to further decrease anteroposterior/lateral dimensions of thoracic cavity during FORCED exhalation

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19
Q

What are the anterior thoracic muscles (2)

A

Pectoralis minor
Serratus anterior

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20
Q

Pectoralis minor action RMA

A

Abducts scapula and rotates downward
RMA: elevates ribs 3-5 during forced inhalation when scapula fixed

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21
Q

Serratus Anterior origin insertion action RMA

A

O: ribs 1-8 or 1-9
I: vertebral border of inferior angle of scapula
A: abducts scapula and rotates upwards
RMA: elevates ribs when scapula stabilized BOXERS MUSCLES as horizontal arm movements (punching/pushing)

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22
Q

Boxers muscles

A

Serratus Anterior

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23
Q

Posterior thoracic muscles (3)

A

Trapezius
Levator Scapulae
Rhomboid major

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24
Q

Trapezius origin insertion action RMA

A

O: superior nuchal line of occipital bone, ligamentum nuchae of spines C7-T12
I: clavicle and acromion of spine of scapula
A:
superior fibers:upward rotate scapula
Middle: adduct scapula
Inferior: depress and upward rotate scapula
Sup/inf: rotate scapula upward, stabilized scapula

RMA: superior fibers can extend head

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25
Q

Rhomboid major action

A

Elevates and adducts scapula and rotates downward, stabilizes scapula

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26
Q

Axial muscles that move humerus (2)

A

Pectoralis major
Latissimus dorsi

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27
Q

Pectoralis major origin insertion action

A

O: clavicle, sternum, costal cartilages of 2-6 sometimes 1-7
I: greater tubercle and lateral lip of intertubercular sulcus of humerus
A:
Whole: adducts/medially rotates arm
Clavicular head: flexes arm
Sternocostal head: extends flexed arm to side of trunk

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28
Q

Latissimus Dorsi action RMA

A

Extends, adducts, and medially rotates arm at shoulder joint, draws arm inferiorly posteriorly
RMA: elevates VC and torso

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29
Q

Scapular muscles that move the humerus (6)

A

Deltoid
Subscapularis
Supraspinatus
Infraspinatus
Teres major
Teres minor

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30
Q

Deltoid origin insertion action

A

O: a formula extremity of clavicle, acromion of scapula, spine of scapula
I: deltoid tuberosity of humerus
A:
Lat fiber: adduct arm at shoulder
Ant: flex/medially rotate arm at shoulder
Post: extend/laterally rotate arm at shoulder

31
Q

Supraspinatus origin insertion action

A

O: supraspinous fossa of scapula
I: greater tubercle of humerus
A: assists deltoid in abducting arm at shoulder joint

32
Q

Infraspinatus action

A

Laterally rotate arm at shoulder joint

33
Q

Infraspinatus action

A

Laterally rotate arm at shoulder joint

34
Q

Teres major action

A

Extend arm at shoulder
Assist in adduction and medial rotation of arm at shoulder

35
Q

Teres minor action

A

Laterally rotates and extends arm at shoulder joint

36
Q

Forearm flexors (3)

A

Biceps brachii
Brachialis
Brachioradialis

37
Q

Biceps brachii origin insertion action

A

O:
Long head: tubercle above Glenoid cavity of scapula
Short head: coracoid process of scapula
I: radial tuberosity and bicipital aponeuroses
A: flexes forearm at elbow joint, supinates forearm at radioulnar joints, flexes arm at shoulder joint

38
Q

Brachioradialis action

A

Flexes forearm at EJ, supinates and pronates forearm at radioulnar J to neutral position

39
Q

Brachialis action

A

Flexes forearm at elbow joint

40
Q

Forearm extensors (2)

A

Triceps brachii
Anconeus

41
Q

Triceps brachii origin insertion action

A

O:
Long head: infraglenoid tubercle
Lat head: lat/post surface of humerus
Medial head: entire post surface of humerus inf to a groove for the radial nerve

I: olecranon of ulna

A: extend forearm at EJ and extend arm at shoulder joint

42
Q

Anconeus origin insertion action

A

O: lat epicondyle of humerus
I: olecranon and superior portion of ulna shaft
A: extend forearm at EJ

43
Q

Forearm pronators (1)

A

Pronator teres

44
Q

Pronator Teres action

A

Pronate forearm at radioulnar joints and weakly flexes forearm at EJ

45
Q

Forearm supinators (1)

A

Supinator

46
Q

Supinator action

A

Supinates forearm at radioulnar joints

47
Q

Flexor carpi radialis origin insertion action

A

O: medial epicondyle of humerus
I: metacarpals II and III
A: flexes and abducts (radial deviation) at WJ

48
Q

Palmaris longus action

A

Weakly flexes hand at WJ

49
Q

Flexor carpi ulnaris origin insertion action

A

O: medial epicondyle of humerus and sup post border of ulna
I: pisiform, hamate, and base of metacarpal V
A: flexes and adducts hand (ulnar deviation) at WJ

50
Q

Flexor digitorum superficialis origin insertion action

A

O: medial epicondyle of humerus, coronoid process of ulna, ridge along lat margin or ant surface of radius
I: middle phalanx of each finger
A: flexes middle phalanx of each finger at proximal IPJ, proximal phalanx MCPJ, and hand at WJ

51
Q

Extensor carpi radialis longus action

A

Extend and abducts hand at WJ (ulnar deviation)

52
Q

Extensor digitorum origin insertion action

A

O: lat epicondyle of humerus
I: distal and middle phalanges of each finger
A: extends distal and middle phalanges of each finger at IPJ, proximal phalanges at MCPJ, hand at WJ

53
Q

Extensor carpi ulnaris origin insertion action

A

O: lat epicondyle of humerus and post border of ulna
I: metacarpal V
A: extends and adducts hand at WJ (ulnar deviation)

54
Q

Erector spinae (3) action

A

Iliocostalis cervices/thoracis/lumborum

Together: extend and Marian erect posture of VC
Singly: lat flex VC to same Sid wood contraction of respective region

55
Q

Anterior scalene action

A

Together: (R/L/middle) elevate first ribs during deep inhalation

56
Q

Middle scalene RMA

A

Flex cervical vertebrae, singly lat flex and slightly rotate cervical vertebrae

57
Q

Posterior scalene action RMA

A

Together: (r/l/post) elevate second tubes during deep inhalation
RMA: flex cervical vertebrae, singly lat flex and slightly rotate cervical vertebrae

58
Q

Iliopsoas psoas major origin insertion action

A

O: transverse processes and bodies of lumbar V
I: with iliacus into lesser trochanter of femur
A: psoas major and iliacus muscles acting together flex thigh at hip joint rotate thigh laterally and flex trunk on hip and in sitting up from supine

59
Q

Gluteus Maximus origin insertion action RMA

A

O: iliac crest sacrum coccyx and aponeuroses of sacrospinalis
I: iliotibial tract of fascia lata and sup lat part of linea appears under trochanter of femur
A: extend thigh at hip joint and laterally rotates thigh, lock knee into extension
rMA: extends torso

60
Q

Gluteus medius action

A

Abducts thigh at hip joint and medially rotates thigh

61
Q

Adductor longus action RMA

A

Adducts and flexes thigh at hip joint and rotates thigh
RMA: extends thigh

62
Q

Adductor magnus action

A

Adducts thigh at hip joint and rotates thigh
Ant part flexes thigh at hip joint
Post part extend higher hip joint

63
Q

Quadriceps femoris (4) insertion action

A

Rectus femoris, vastus lateralis/medialis/intermdedius

I: patella via quadriceps tendon and then tibial tuberosity via patellar ligaments
A: all extend leg at knees joint
Rectus femoris also flexes thigh at hip joint

64
Q

Sartorius action

A

Weakly flexes leg at knee joint
Weakly flexes/abducts/lat rotates thigh at hip joint

65
Q

Hamstrings (3)

A

Biceps femoris
Semitendinosus
Semimembranosus

66
Q

Biceps femoris origin insertion action

A

O: long head from Scala tuberosity, short head from linea appears of femur
I: head of fibula and lateral condyle of tibia
A: flexes leg at knee joint and extends thigh at hip joint

67
Q

Semitendinosus action

A

Flexes leg at knee joint and extends thigh at hip joint

68
Q

Semimembranosus action

A

Flexes leg at knee joint and extends thigh at hip joint

69
Q

Tibialis anterior origin insertion action

A

O: lat condyle and body of tibia and interosseous membrane
I: metatarsal I and first (medial) coneiform
A: dorsiflexes foot at ankle joint and supinates foot at interstate joints

70
Q

Extensor digitorum longus origin insertion action

A

O: lat condyle of tibia, ant surface of fibula, and interosseous membrane
I: middle and distal phalanges of toes II-V
A: dorsiflexes foot at ankle joint and extends distal and middle phalanges of each toe at IPJ, and proximal phalanx of each toe at MTPJ

71
Q

Fibularis (peroneus) longus action

A

Plantar flexes foot at ankle joint and pronates foot and intertarsal joints

72
Q

Gastrocnemius origin insertion action

A

O: lat and med condyle of femur and capsule of knee
I: calcaneus by Achilles tendon
A: plantar flexes foot at ankle joint and flexes leg at knee joint

73
Q

Soleus action

A

Plantar flexes foot at ankle joint

74
Q

Flexor digitorum longus origin insertion action

A

O: middle third of post surface of tibia
I: distal phalanges of toes II-V
A: plantar flexes foot at ankle joint flexes distal and middle phalanges of toes II-V at IPJ and proximal phalanx of toes II-V at MCPJ

Biol235 Quiz 3 (3 decks)

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