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Gross Anatomy Exam 3 > Origins > Flashcards

Origins Flashcards

1
Q

What is the origin of rectus abdominus

A

Lateral head: pubic crest and pubic tubercle

Medial head: anterior region of pubis symphysis

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2
Q

What is the origin of transversus abdominus

A 
Costal cartlidge of ribs 7-12
Thoracolumbar fascia (deep)
Iliac crest
ASIS
Iliopsoas fascia
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3
Q

What is the origin of external oblique

A

Ribs 5-12

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4
Q

What is the origin of internal oblique

A

Thoracolumbar fascia (deep)
Iliac crest
ASIS
Iliopsoas fascia

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5
Q

What is the origin of diaphragm

A

Costal: ribs 7-12
Lumbar: L1-L3 bodies and IV discs, anterior longitudinal ligament
Sternal: xiphoid process

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6
Q

What is the origin of psoas major

A

Superficial layer: vertebral bodies and IV discs of T12-L4

Deep layer: costal processes of L1-L4

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7
Q

What is the origin of psoas minor

A

Vertebral bodies and IV discs of T12-L1

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8
Q

What is the origin of ilacus

A

Iliac fossa

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9
Q

What is the origin of quadratus lumborum

A

Iliac crest and iliolumbar ligament

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10
Q

What is the origin of external, internal, innermost intercostals

A

Lower border of rib to superior border of rib above
(External: run oblique down)
(Internal and innermost: run oblique up)

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11
Q

What is the origin of transversus thoracis

A

Sternum and xiphoid process

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12
Q

What is the origin of diaphragm hiatus

A

Esophageal, aortic, CAVAL opening: lumbar part of diaphragm

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13
Q

What is the origin of diaphragm crura

A

L and R lumbar part of diaphragm

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14
Q

What is the origin of levator ani

A

Puborectalis: superior pubic Ramus
Pubococcegeous: pubis( lateral to puborectalis )
Iliococcygeous: tendinous arch

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15
Q

What is the origin of coccygeus

A

Coccyx

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16
Q

What is the origin of piriformis

A

Pelvic surface of sacrum

17
Q

What is the origin of Obturator internus

A

Obturator membrane

18
Q

What is the origin of ishiocavernosus

A

Ishial spine

19
Q

What is the origin of bulbospongiosus

A

Runs anteriorly from perineal body to clitoris or penile raphe

20
Q

What is the origin of superior transverse perineal

A

Ishial Ramus

21
Q

What is the origin of external anal spinchter

A

Encircles anus( posteriorly from perineal body to anococcygeous)

22
Q

What is the origin of omohyoid

A

Superior border of scapula

23
Q

What is the origin of sternohyoid

A

Manubrium and sternoclavicular joint

24
Q

What is the origin of sternothyroid

A

Posterior surface of manubrium

25
Q

What is the origin of thyrohyoid

A

Thyroid cartlidge

26
Q

What is the origin of masseter

A

Zygomatic arch

27
Q

What is the origin of temporalis

A

Inferior temporal line of temporal Fossa

28
Q

What is the origin of lateral pterygoid

A

Superior: greater wing of sphenoid bone
Inferior: lateral pterygoid plate

29
Q

What is the origin of medial pterygoid

A

Superficial: maxilla
Deep: medial surface of lateral pterygoid plate, pterygoid Fossa

30
Q

What is the origin of platysma

A

Skin on neck

31
Q

What is the origin of digastric

A

Anterior belly: digastric Fossa of mandible

Posterior belly: mandibular notch of temporal bone

32
Q

What is the origin of Stylohyoid

A

Styloid process of temporal bone

33
Q

What is the origin of mylohyoid

A

Mylohyoid line of mandible

34
Q

What is the origin of geniohyoid

A

Inferior mental spine of mandible

Gross Anatomy Exam 3 (6 decks)

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