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Anatomy 32 > Human Muscular System > Flashcards

Human Muscular System Flashcards

1
Q

Occipitofrontalis

A

Frontal Belly and Occipital Belly

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2
Q

Temporalis

A

Lateral muscle located on the temporal bone

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3
Q

Orbicularis Oculi

A

A: Closes Eye

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4
Q

Zygomaticus Major and Minor

A

Smile muscles

A: Elevates corner of mouth

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5
Q

Orbicularis Oris

A

A: closes lips

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6
Q

Masseter

A

A: Elevates Jaw

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7
Q

Platysma

A

Located Anterior to the SCM

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8
Q

Sternocleidomastoid (SCM)

A

Located posterior to Platysma

Medial Head
Lateral Head

A: flexes neck

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9
Q

Pectoralis Major

A

O: sternal end of clavicle, sternum, cartilage of ribs 1-6
I: Greater tubercle of humerus
A: Flexes Arm

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10
Q

Pectoralis Minor

A

Located inferior of Pectoralis Major

A: protracts and rotates scapula inferiorly

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11
Q

Serratus Anterior

A

Located Posterior to Pectoralis Minor and lateral to external intercostals

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12
Q

External Intercostals

A

A: elevates ribs

Lateral muscles inbetween ribs

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13
Q

Interal Intercostals

A

A: depresses ribs

Medial muscles inbetween ribs

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14
Q

Rectus Abdominis

A

A: flexion of the trunk

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15
Q

External Oblique

A

Anterior abdominal region

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16
Q

Internal Oblique

A

Located lateral to rectus abdominis

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17
Q

Linea Alba

A

Located medial of Rectus Abdomins

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18
Q

Diaphragm

A

Located below the lungs and behind the ribs

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19
Q

Latissimus Dorsi

A

O: Lower six thoracic vertebrae, lumbar vertebrae, and illac crest
I: intertubercular sulcus of humerus
A: extends arm

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20
Q

Splenius Capitis

A

Located on the posterior neck region

A: extends neck

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21
Q

Teres Major

A

Inferior to Teres Minor

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22
Q

Teres Minor

A

O: Lateral border of scapula
I: Greater tubercle of humerus
A: laterally rotates arm

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23
Q

Erector Spinae

A

Located inferior to the Rhomboids posterior on the back

A: extends vertebral column

24
Q

Supraspinatus

A

O: supraspinous fossa of the scapula
I: greater tubercle of humerus
A: abducts arm

25
Q

Infraspinatus

A

Located in the infraspinous fossa of scapula
A: laterally rotates arm

26
Q

Subscapularis

A

Located in the subscapular fossa of scapula (Anterior side)

27
Q

Deltoid

A

O: lateral third of clavicle, acromion, and scapular spine
I: deltoid tuberosity of humerus
A: abducts the arm

28
Q

Biceps Brachii

A

(Two origins: same Insertion and Action)
Long head O: supraglenoid tubercule of scapula
Short head O: coracoid process of scapula

I: radial tuberosity
A: flexes and supinates forearm

29
Q

Brachialis

A

Posterior to Biceps Brachii (underneath them)

A: flexes forearm

30
Q

Triceps Brachii

A

(Three origins: same Insertion and Action)
Long Head O: infraglenoid tubercle of scapula
Lateral Head O: posterior shaft of humerus
Medial Head O: posterior shaft of humerus

I: Olecranon of Ulna
A: Extends forearm

31
Q

Brachioradialis

A

A: synergist in forearm flexion

32
Q

Extensor Digitorum

A

Located posterior of forearm

A: extends fingers

33
Q

Flexor Carpi Ulnaris

A

Located most medial side of forearm

A: Flexes Wrist

34
Q

Extensior Carpi Ulnaris

A

Located posterior of forearm

In between Extensor Digitorum and Flexor Carpi Ulnaris

35
Q

Flexor Carpi Radialis

A

Right next to Brachioradialis on medial side

36
Q

Point and locate all 5 forearm muscles rn

A

Anterior side of forearm:
- Brachioradialis
- Flexor Carpi Radialis

Most medial side of forearm:
- Flexor carpi ulnaris

Posterior side of forearm:
- Extensor carpi ulnaris
- Extensor Digitorum

37
Q

Iliopsoas

A

(2 closely related muscles with same insertions and actions)
Iliacus O: Iliac Fossa
Psoas Major O: Lumbar vertebrae and T12

Psoas Major is more medial than the Iliacus

I: lesser trochanter of femur
A: thigh flexion

38
Q

Tensor Fasciae Latae

A

O: Anterior aspect of illiac crest and anterior superior illiac spine
I: Iliotibial tract

39
Q

Pectineus

A

Superior muscle attached to Pubis bone

40
Q

Adductor Longus

A

Middle Muscle attached to Pubis bone (Inferior to Pentineus)

41
Q

Gracillis

A

Medial muscle attached to Pubis bone (inferior to Adductor Longus)

42
Q

Sartorius

A

O: Anterior Superior Illiac Spine
I: Medial Aspect of proximal tibia

43
Q

Rectus Femoris

A

O: anterior inferior iliac spine
I: patella and tibial tuberosity via patellar ligament

44
Q

Vastus Medialis

A

O: Iinea aspera of femur
I: patella and tibial tuberosity via patellar ligament

45
Q

Vastus Lateralis

A

O: greater trochanter of femur
I: patella and tibial tuberosity via patellar ligament

46
Q

Patellar Tendon

A

Between patella and quadriceps group

47
Q

Gluteus Medius

A

O: Ilium
I: greater trochanter of femur
A: abducts the thigh

48
Q

Gluteus Maximus

A

O: Ilium, sacrum, and coccyx
I: Gluteal tuberosity of femur
A: extends the thigh

49
Q

Adductor Magnus

A

Located lateral to the Gracilis

Only seen on the posterior of hamstrings

50
Q

Hamstring Group

A

(Three separate Insertions, same Origin and Action)

Biceps Femoris I: Lateral condyle of tibia
Semitendinosus I: Medial aspect of tibia
Semimembranosus I: Medial condyle of tibia

O: ischial tuberosity
A: Flexes the knee (curls the leg)

51
Q

Gastrocnemius (calf)

A

(2 heads with different origin, same Insertion and Action)
Lateral head O: lateral condyle of femur
Medial head O: medial condyle of femur

I: calcaneus via calcaneal tendon (Achille’s Tendon)
A: plantar flexion

52
Q

Solecus

A

Found only via lateral view of calf

Anterior to gastrocnemius

53
Q

Fibularis Longus

A

Anterior to Soleus

In between Soleus and Extensor Digitorum

54
Q

Extensor Digitorum Longus

A

In between Soleus and Tibialis Anterior

55
Q

Tibialis Anterior

A

O: Lateral condyle and tibial shaft
I: Medial cuneiform and first metatarsal bone
A: Dorsiflexion

56
Q

Ligamentum Nuchae

A

Medial posterior neck attachment

57
Q

Dorsal Lumbar Fascia

A

Large aponeurosis on lumbar region

Anatomy 32 (20 decks)

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