Muscles Flashcards

(55 cards)

1
Q

Frontal

A

Origin: Epicranial Aponeurosis
Insertion: skin over supraorbital margin
Action: raises the eyebrows/wrinkles forehead

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2
Q

Occipital

A

Origin: Occipital bone
Insertion: Epicranial Aponeurosis
Action: pulls the scalp down

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3
Q

Oribucularis Oris

A

Origin: muscle fibers around the mouth
Insertion: at the corners/angles of the mouth
Action: closes/protrudes the lips

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4
Q

Zygomaticus Major

A

Origin: Zygomatic bone
Insertion: in the skin of the angles of the mouth
Action: pulls the angles of the mouth upward/outward

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5
Q

Buccinator

A

Origin: Maxilla/Mandible
Insertion: Orbicularis Oris
Action: Flattens the cheeks

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6
Q

Platysma

A

Origin: Fascia over the Deltoid/Pectoralis Major
Insertion: Mandible and the skin of the lower face
Action: Draws lower lip down and out/depresses lower Mandible

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7
Q

Orbicularis Oculi

A

Origin: Medial wall of the orbit
Insertion: in a circular path around the orbit
Action: closes the eyes

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8
Q

Levator Palpebrae Superioris (Over the eyelid)

A

Action: Elevates upper eyelid

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9
Q

Levator Labii Superioris

A

Origin: Maxillary bone
Insertion: into angles of mouth/skin of upper lip
Action: Elevates upper lip

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10
Q

Depressor Labii Inferioris

A

Origin: Mandible
Insertion: into the skin of the lower lip
Action: Lowers the bottom lip

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11
Q

Mentalis

A

Origin: Mandible
Insertion: Skin of the chin
Action: Elevates/protrudes the lower lip

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12
Q

Risorius (lateral across cheek)

A

Origin: fascia over parotid gland
Insertion: angles/corners of the mouth
Action: draws the angles of the mouth lateral

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13
Q

Nasalis

A

Action: Compresses/flairs the nostrils

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14
Q

Depressor Anguli Oris

A

Origin: Mandible
Insertion: Angles of the mouth
Action: brings angles of the mouth lateral and inferior

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15
Q

Auricularis (Right hand side of head and underneath Temporalis)

A

Action: Moves the oracle of the ear up and back (like cats and dogs)

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16
Q

Masseter (side of cheek)

A

Origin: Maxilla/Zygomatic Arch
Insertion: Mandible
Action: Elevates the Mandible

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17
Q

Temporalis

A

Origin: Temporal bone
Insertion: Mandible
Action: Elevates/retracts Mandible

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18
Q

Pterygoideus Lateralis

A

Origin: Pterygoid processes
Insertion: Mandible
Action: Moves Mandible side to side

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19
Q

Superior Rectus

A

Action: Makes eye look upward

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20
Q

Inferior Rectus

A

Action: Makes eye look downward

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21
Q

Lateral Rectus

A

Action: Makes eye look laterally

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22
Q

Medial Rectus

A

Action: Makes eye look medially

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23
Q

Inferior Oblique

A

Action: Makes eye look up and away

24
Q

Superior Oblique

A

Action: Makes eye look down and away

25
Genioglossus
Origin: Mandible Insertion: Underside of tongue/Hyoid bone Action: depresses tongue
26
Styloglossus
Origin: Styloid process of temporal bone Insertion: Side/under tongue Action: Elevates/retracts the tongue
27
Digastric Anterior Belly
Origin: Mandible Insertion: Hyoid bone Action: Elevates Hyoid bone
28
Digastric Posterior Belly
Origin: Temporal bone Insertion: Hyoid bone Action: Elevates Hyoid bone
29
Mylohyoid
Origin: Mandible Insertion: Hyoid bone Action: Elevates Hyoid
30
Stylohyoid
Origin: Styloid process Insertion: Hyoid bone Action: Elevates Hyoid
31
Geniohyoid
Origin: Mandible Insertion: Hyoid bone Action: Elevates Hyoid
32
Omohyoid
Origin: Scapula Insertion: Hyoid Action: depresses lower Hyoid bone
33
Sternohyoid
Origin: Sternum Insertion: Hyoid bone Action: depresses Hyoid bone
34
Thyrohyoid
Origin: Thyroid cartilage Insertion: Hyoid bone Action: lowers Hyoid/raises Thyroid
35
Sternothyroid
Origin: Sternum Insertion: Thyroid Action: Lowers Thyroid cartilage
36
Sternocleidomastoid
Origin: Sternum/Clavicle Insertion: Mastoid process of the temporal bone Action: laterally flexes the head to the same side, but rotates to the opposite
37
Semispinalis Capitis
Origin: C7 - T6 Insertion: Occipital bone Action: Extends the head
38
Splenius Capitis
Origin: C7 to T4 Insertion: Occipital bone/Mastoid process Action: Extends the head
39
Scalenes Anterior, Middle, and Posterior
Origin: C2 to C7 Insertion: Rib 1 and 2 Action: Flexes cervical spine/elevates ribs
40
Pectoralis Minor
Origin: Ribs 3-5 Insertion: Coracoid process of Scapula Action: Depresses Scapula
41
Serratus Anterior
Origin: Ribs 1-9 Insertion: Scapula Action: Abducts the Scapula
42
Trapezius
Origin: Occipital bone to T12 Insertion: Clavicle/Scapula Action: Elevate and adducts the Scapula/extends the head
43
Decatur Scapulae
Origin: C1-C4 Insertion: Scapula Action: Elevates the Scapula
44
Rhomboideus Major
Origin: T2-T5 Insertion: Scapula Action: Adducting the Scapula
45
Rhomboideus Minor
Origin: C7-T1 Insertion: Scapula Medial Border (Scapula) Action: Adducting the Scapula
46
Subclavius
Origin: Rib 1 Insertion: Clavicle Action: Depresses Clavicle
47
Pectoralis Major
Origin: Ribs 2-6, Clavicle, and Sternum Insertion: Humerus Action: Flexes and adducts Humerus
48
Latissmus Dorsi
Origin: T8 to L5 Insertion: Humerus Action: Adducting and extending Humerus
49
Subscapularis
Origin: Subscapular fossa Insertion: Humerus Action: Medially rotates the Humerus
50
Coracobrachialis
Origin: Coracoid process of Scapula Insertion: Humerus Action: Flexes the arm (raises arm)
51
Deltoid
Origin: Clavicle/Scapula Insertion: Humerus Action: Abducts the arm
52
Supraspinatus
Origin: Supraspinous fossa Insertion: Humerus Action: Abducts the Humerus (responsible for the first 15 degrees)
53
Infraspinatus
Origin: Infraspinous fossa Insertion: Humerus Action: Laterally rotates Humerus
54
Teres Major
Origin: Scapula Insertion: Humerus Action: Rotates Humerus medially
55
Teres Minor
Origin: Scapula Insertion: Humerus Action: Laterally rotates Humerus