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BIOL 1190 COPY I.D > List of muscles > Flashcards

List of muscles Flashcards

1
Q

Occipitofrontalis (frontal belly)

A

Location: skin superior to supraorbital margin

Action: draws scalp anteriorly, raises eye brows and wrinkles skin of forehead horizontally as in look of surprise

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2
Q

Occipitofrontalis (frontal belly)
origin + insertion

A

O = epicranial aponeurosis
I = skin superior to the supraorbital margin

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3
Q

Occipitofrontalis (occipital belly)

A

Location: occipital bone and mastoid process of temporal bone

Action: draws scalp posteriorly

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4
Q

Occipitofrontalis (occipital belly)
origin + insertion

A

O = occipital bone and mastoid process of temporal bone
I = epicranial aponeurosis

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5
Q

Orbicularis oris

A

Location: skin at the corner of the mouth

Action: closes and protrudes lips, as in kissing; compresses lips against teeth; and shapes lips during speech

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6
Q

Orbicularis oris
origin + insertion

A

O = muscle fibers surrounding opening of mouth
I = skin at corner of mouth

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7
Q

Platysma

A

Location: mandible bends with muscles around the angle of the mouth and skin of lower face

Action: draws outer part of lip inferiorly and posteriorly as in pouting; depresses mandible

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8
Q

Platysma origin + insertion

A

O = fascia over deltoid and pectoralis major muscle
I = mandible , muscles around angle of mouth and skin of lower face

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9
Q

Orbicularis oculi

A

Location: medial wall of orbit. circular path around orbit

Action: closes eye

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10
Q

Orbicularis oculi origin + insertion

A

O = medial wall of orbit
I = circular path around orbit

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11
Q

Masseter (chewer)

A

Location: angle and ramus of mandible (vertical part of mandible)

Action: elevate mandible, as in closing mouth

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12
Q

Masseter origin + insertion

A

O = maxilla and zygomatic arch
I = angle and ramus of mandible

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13
Q

Temporalis

A

Location: temporal bone, coronoid process and ramus of mandible

Action: elevates and retracts the mandible

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14
Q

Temporalis origin + insertion

A

O = temporal bone
I = coronoid process and ramus of mandible

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15
Q

Sternocleidomastoid

A

location: extends from base of skull, down both sides of neck and ends a sternum

action:
- elevate sternum during exhalation
- flexing cervical portion of vertebra
- extending head at atlanto-occipital joints
- laterally flex neck and head to same side and rotate
- laterally rotate and flex neck to opposite side of contracting muscle
- posterior fibers assist in extension of the head

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16
Q

Sternocleidomastoid origin + insertion

A

O = sternal head of manubrium and clavicular head (medial third)

I = mastoid process of temporal bone and lateral half of superior nuchal line of occipital bone

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17
Q

Serratus anterior (saw toothed)

A

location: covers side of ribcage

action: abducts scapula and rotates it upward
- elevates ribs when scapula is stabilized.

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18
Q

Which muscle is known as boxers muscle and what movements does it produce

A
  • serratus anterior
  • horizontal arm movements such as punching or pushing
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19
Q

Serratus anterior origin + insertion

A

O = ribs 1- 8 or 1 - 9

I = medial/vertebral border and inferior angle of scapula

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20
Q

Trapezius

A

location: traps

action: superior fibers upward rotate the scapula
- middle fibers adduct the scapula
- inferior fibers depress and upward rotate the scapula
- stabilize the scapula
- superior fibers can help extend the head

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21
Q

Trapezius origin + insertion

A

O = superior nuchal line of occipital bone and spines of c7-t12

I = clavicle, acromion and spine of scapula

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22
Q

Diaphragm

A

action: inhalation - contracts causing it to flatten and increase vertical dimension of thoracic cavity

exhalation: relaxation of diaphragm causing it to move superiorly and decrease vertical dimension of thoracic cavity

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23
Q

Diaphragm origin + insertion

A

O = xiphoid process, costal cartilaes and adjacent portions of ribs 7-12, lumbar vertebrae and their intervertebral discs

I = central tendon

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24
Q

Rectus abdominis

A

Action:
- flexes vertebral column especially lumbar portion
- compresses abdomen to aide defecation and urination
- forced exhalation
- childbirth
-flexes pelvis on vertebral column

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25
Rectus abdominis origin + insertion
O = pubic crest and pubic symphysis I = cartilage of ribs 5-7 and xiphoid process
26
External abdominal oblique
Action: acts bilaterally to compress abdomen and flex vertebral column - acts singly to laterally flex vertebral column and rotate vertebral column in lumbar portion
27
External abdominal oblique origin + insertion
O = ribs 5-12 I = iliac crest and linea alba
28
Internal abdominal oblique
Action: compress abdomen, flex vertebra, laterally flex and rotate
29
Internal abdominal oblique origin + insertion
O = iliac crest, inguinal ligament, linea alba I = cartilage of ribs 7-10 and thoracolumbar fascia
30
Transverse abdominis
action: compresses abdomen
31
Transverse abdominis origin + insertion
O = iliac crest, inguinal ligament, lumbar fascia, and cartilages of ribs 5-10 I = xiphoid process, linea alba and pubis
32
Pectoralis major
Action: as a whole adducts and medially rotates the arm at the shoulder joint. clavicular head flexes arm and sternocostal head flexes the extended arm to the side of the trunk
33
Pectoralis major origin + insertion
O = clavicle, sternum, costal cartilages of ribs 2-6 and sometimes 1-7
34
Latissmus dorsi
Action: extends, adducts, and medially rotates arm at shoulder joint; draws arm inferiorly and posteriorly, elevates vertebral column and torso
35
Latissmus dorsi origin + insertion
O = spines of lumbar vertebra and crests of sacrum I = intertubercal sulcus of humerus
36
Deltoid
Action: - lateral fibers: abduct arm at shoulder joint - anterior fibers: flex and medially rotate the arm at the shoulder joint - posterior fibers: extend and laterally rotate the arm at the shoulder joint
37
Deltoid origin + insertion
O = acromial extremity of clavicle, acromion of scapula, spine of scapula I = deltoid tuberosity of humerus
38
Biceps brachii
Action: flexes arm at elbow joint, supinates arm at radioulnar joint and flexes the arm at shoulder joint
39
Biceps brachii origin + insertion
O = long head: glenoid cavity, short head: coracoid process of scapula I = radial tuberosity of radius and bicipital aponeurosis
40
Brachioradialis
action: flexes arm at elbow joint most effectively when arm is mid-pronated
41
Brachioradialis origin + insertion
O = lateral border of distal end of humerus I = superior to styloid process of radius
42
Triceps brachii
action: extends forearm at elbow joint and extends arm at shoulder joint
43
Triceps brachii origin + insertion
O = long head; infraglenoid tubercle, lateral head; lateral posterior surface of humerus, medial head; entire posterior surface of humerus inferior to a groove for the radial nerve I = olecranon of ulna
44
Gluteus maximus
action: extends and laterally rotates hip joint
45
Gluteus maximus origin + insertion
O = iliac crest, sacrum, coccyx, and aponeurosis sacrospinalis I = iliotibial tract of fascia lata, and superior lateral part of linea aspera, under greater trochanter of femur
46
Gluteus medius
Action: abducts and medially rotates hip joints
47
Gluteus medius origin + insertion
O = lateral surface of ilium I = greater trochanter of femur
48
Gracilis
Action: adducts thigh at hip joint, medially rotates thigh, and flexes leg at knee joint
49
Gracilis origin + insertion
O = body and inferior ramus of pubis I = medial surface of body of tibia
50
Rectus femoris (quadriceps femoris)
action: all 4 heads extend leg at knee joint; rectus femoris muscle acting alone also flexes thigh at hip joint
51
Rectus femoris origin + insertion
O = anterior inferior iliac spine I = patella via quadriceps tendon, tibial tuberosity via patella ligament
52
Vastus lateralis
O = greater trochanter and linea aspera of femur
53
Vastus medius
O = linea aspera of femur
54
Vastus intermedius
O = anterior and lateral surfaces of body of femur
55
Biceps femoris
action: extends thigh at hip joint located posteriorly
56
Biceps femoris origin + insertion
O = long head; ischial tuberosity, short head; linea aspera of femur I = head of fibula and lateral condyle of tibia
57
Semitendinosus
Action: extends thigh at hip joint posterior medial aspect of thigh
58
Semitendinosus origin + insertion
O = ischial tiberosity I = proximal part of tibia medial to the tibial tuberosity
59
Semimembranosus
Action: flexes leg at knee joint, and extends thigh at hip joint - most medial
60
Semimembranosus origin + insertion
O = ischial tuberosity I = medial condyle of tibia
61
Tibialis anterior
Action: dorsiflexes foot at ankle joint and inverts foot at intertarsal joints
62
Tibialis anterior origin + insertion
O = lateral condyle and body of tibia and interosseous membrane I = metatarsal and first cuneiform
63
Gastrocnemius
Action: plantar flexes foot at ankle joint and flexes leg at knee joint
64
Gastrocnemius origin + insertion
O = lateral condyle of femur, medial condyle of femur, and articular capsule I = calcaneous by way of calcaneal tendon
65
Soleus
Action: plantar flexes foot at ankle joint
66
Soleus origin + insertion
O = head of fibula and medial border of tibia I = calcaneus by way of calcaneal tendon

BIOL 1190 COPY I.D (16 decks)

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