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Biology 231 > Muscles origins & insertions > Flashcards

Muscles origins & insertions Flashcards

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1
Q

Occipitalis

A

Origin: Occipital and temporal bones
Insertion: Galea aponeurotica
Function: Pulls scalp posterior

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2
Q

Frontalis

A

Origin: Galea aponeurotica
Insertion: Skin of eyebrows and root of nose
Function: Raises eyebrows and wrinkles forehead

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3
Q

Temporalis

A

Origin: Temporal fossa
Insertion: Coronoid process of madible
Function: Closes jaw

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4
Q

Orbicularis Oculi

A

Origin: Frontal and maxilaary bones
Insertion: Tissue of eyelid
Function: Blinking; squinting

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5
Q

Zygomaticus Major

A

Origin: Zygomatic bone
Insertion: Skin and muscle at corner mouth
Function: Smiling

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6
Q

Masseter

A

Origin: Zygomatic arch and maxilla
Insertion: Angle and ramus of mandible
Function: Elevates mandible

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7
Q

Orbicularis Oris

A

Origin: Arises from maxillae and mandible
Insertion: encircles the mouth
Function: Kissing

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8
Q

Platysma

A

Origin: Fascia of Chest
Insertion: Lower margin of mandible
Function: Depress mandible

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9
Q

Sternocleidomastoid

A

Origin: Manubrium and medial end of clavicle
Insertion: Mastoid process
Function: Head flexion

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10
Q

Trapezius

A

Origin: Occipital bone; spines C7 and T1-12
Insertion: Acromion and spoine of scapula and lateral third of clavicle
Function: Raises and rotates Scapula

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11
Q

Deltoid

A

Origin: Lateral 3rd of clavicle; acromion and spine of scapula
Insertion: Deltoid tuberosity of humerus
Function: Arm abdduction

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12
Q

Teres Major

A

Origin: Posterior surface of scapula at inferior angle
Insertion: Intertubercular sulcus of humerus
Function: Medial Rotates and adducts humerus

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13
Q

Teres Minor

A

Origin: Lateral border of posterior scapula
Insertion: Greater tubercle of humerus
Function: Stabilizes humerus, rotates humerus laterally

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14
Q

Infraspinatus

A

Origin: Infraspinous fossa
Insertion: Greater tubercle of humerus
Function: Stabilizes humerus, rotates humerus laterally

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15
Q

Supraspinatus

A

Origin: Supraspinous fossa
Insertion: Greater tubercle of humerus
Function: Stabilizes humerus, prevents downward dislocation

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16
Q

Subscapularis

A

Origin: Subscapular fossa
Insertion: Lesser tubercle of humerus
Function: rotates humerus medial, stabilizes humerus

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17
Q

Pectorlis Major

A

Origin: Sternum; cartilages of ribs 1-6
Insertion: Greater tubercle of humerus
Function: Arm flexion

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18
Q

Pectorlis Minor

A

Origin: Anterior surface of ribs 3-5
Insertion: Coracoid process of scapula
Function: Scapula forward and downward

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19
Q

Latissimus Dorsi

A

Origin: Spines T6-12, Lumbar, lower 3 ribs, iliac crest
Insertion: Intertubercular sulcus of humerus
Function: Arm extension

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20
Q

Serratus Anterior

A

Origin: Ribs 1-8
Insertion: Anterior surface of vertebral border
Function: Hold scapula against chest wall

21
Q

Rectus Abdominis

A

Origin: Pubic Crest and symphysis
Insertion: Xiphoid process and ribs 5-7
Function: Flex and rotates lumbar region

22
Q

External Oblique

A

Origin: outer surface of lower 8 ribs
Insertion: Insert into linea alba
Function: Aid in flexing vertebral column with rectus

23
Q

Internal Oblique

A

Origin: Lumbar fascia; iliac crest
Insertion: Linea alba; pubic crest
Function: Aid in flexing vertebral column with rectus

24
Q

Transversus Abdominis

A

Origin: Inguinal ligament;iliac crest; last 6 ribs
Insertion: Linea alba; pubic crest
Function: Compress abdominal contents

25
Q

Triceps Brachii

A

Origin: Infraglenoid tubercle; Poster shaft
Insertion: Olecranon process of ulna
Function: Forearm extension

26
Q

Biceps Brachii

A

Origin: Coracoid process; tubercle of glenoid cavity
Insertion: Radial tuberosity
Function: Flexes elbow joint

27
Q

Brachioradialis

A

Origin: Lateral supercondylar ridge
Insertion: Base of styloid process
Function: Forearm flexion

28
Q

Brachialis

A

Origin: Front of distal humerus
Insertion: Coronoid process of ulna
Function: Forearm flexion

29
Q

Gluteus Maximus

A

Origin: Dorsal ilium; sacrum; coccyx
Insertion: Gluteal tuberosity of femur
Function: Extensor of thigh

30
Q

Gluteus Medius

A

Origin: Anterior and posterior gluteal line
Insertion: Greater trochanter of femur
Function: Abducts and medial rotates

31
Q

Gluteus Minimus

A

Origin: Anterior and inferior gluteal lines
Insertion: Greater trochanter of femur
Function: Abducts and medial rotates

32
Q

Tensor Fascia Latae

A

Origin: Anterior iliac crest; anterior superior iliac spine
Insertion: Iliotibial Tract
Function: Flexes and abducts thigh

33
Q

Sartorius

A

Origin: Anterior superior iliac spine
Insertion: Medial aspect of proximal tibia
Function: Flexes, abducts and laterally rotates thigh

34
Q

Iliotibial tract

A

Origin: Iliac crest
Insertion: knee
Function:

35
Q

Rectus Femoris

A

Origin: Anterior Iliac crest
Insertion: Patella and tibial tuberosity
Function: Extends knee and flexes hip

36
Q

Vastus Lateralis

A

Origin: Greater Trochanter
Insertion: Patella and tibial tuberosity
Function: Extends and stabilizes knee

37
Q

Vastus medialis

A

Origin: Linea aspera
Insertion: Patella and tibial tuberosity
Function: Extends knee

38
Q

Vastus Intermedius

A

Origin: Anterior and lateral surface of proximal femur
Insertion: Patella and tibial tuberosity
Function: Extends knee

39
Q

Gracilis

A

Origin: Inferior Ramus and body of pubis
Insertion: Inferior to its medial condyle
Function: Adducts thigh

40
Q

Adductor longus

A

Origin: Pubis near pubic symphysis
Insertion: Linea aspera
Function: Adducts thigh

41
Q

Adductor Magnus

A

Origin: Ischial and pubic rami and ishcial tuberosity
Insertion: linea aspera and adductor tubercle of femur
Function: Adducts thigh, medially rotates thigh

42
Q

Iliopsoas

A

Origin: see iliacus and Psoas Major
Insertion: see iliacus and posas major
Function: Posture

43
Q

Semitendinosus

A

Origin: Ischial tuberosity
Insertion: medial aspect of upper tibial shaft
Function: Extends thigh;flexes knee

44
Q

Biceps Femoris

A

Origin: Ischial tuberosity
Insertion: Lateral condyle of tibia
Function: Extends thigh;flexes knee

45
Q

Gastrocnemius

A

Origin: Medial and Lateral condyles of femur
Insertion: Posterior calcaneus via calcaneal tendon
Function: Plantar flexion

46
Q

Soleus

A

Origin: Superior Tibia/fibula
Insertion: Posterior calcaneus via calcaneal tendon
Function: Plantar flexion

47
Q

Tibalis Anterior

A

Origin: Lateral condyle and 2/3 of shaft
Insertion: Medial cuneiform and 1st metatarsal bone
Function: Dorsiflexion

48
Q

Peroneus Longus

A

Origin: Upper portion of lateral fibula
Insertion: First metatarsal and meidal cuneiform
Function: Plantar flexion

49
Q

Calcaneal tendon

A

Origin:
Insertion:
Function: Achilles Tendon

Biology 231 (22 decks)

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