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Post-Midterm Muscles Flashcards

1
Q

What is the origin of the rectus abdominis?

A

pubic crest, public symphysis of pubis

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2
Q

What is the insertion of the rectus abdominis?

A

cartilages of fifth, sixth, and seventh ribs and xiphoid process

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3
Q

What are the actions of the rectus abdominis?

A

flexion of trunk, posterior pelvic tilt, compression of abdominal contents

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4
Q

What nerve innervates the rectus abdominis

A

intercostal nerves (ventral rami)

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5
Q

what is the origin of the external oblique

A

anterior portion of iliac crest, pubic bone and abdominal aponeurosis

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6
Q

What is the insertion of the external oblique

A

lower eight ribs

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7
Q

what are the actions of the external oblique

A

Unilateral: contralateral rotation of trunk, lateral flexion of trunk; Bilateral: flexion of trunk, posterior pelvic tilt, compression of abdominal contents

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8
Q

What nerve innervates external oblique

A

intercostal nerves

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9
Q

What is the origin of internal oblique

A

anterior portion of iliac crest, inguinal ligament, thoracolumbar fascia

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10
Q

what is the insertion of the internal oblique

A

last 3 ribs, abdominal aponeurosis

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11
Q

what are the actions of the internal oblique

A

Unilateral: ispilateral rotation of trunk,lateral flexion of trunk; Bilateral: flexion of trunk, posterior pelvic tilt, compression of abdominal contents

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12
Q

what nerve innervates the internal oblique

A

intercostal nerves

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13
Q

what is the origin of the transversus abdominis

A

iliac crest, inguinal ligament, thoracolumbar fascia and lower coastal cartilages

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14
Q

What is the Insertion of transversus in abdominis

A

abdominal aponeurosis

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15
Q

what are the actions of transversus abdominis

A

compression of abdominopelvic contents

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16
Q

What nerves innervate the transversus abdominis

A

intercostal nerves

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17
Q

what is the origin of the erector spinae group

A

pelvis

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18
Q

what is the insertion of the erector spinae group

A

spine, rib cage, and mastoid process

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19
Q

What are the functions of the erector spinae

A

Extension of trunk, ispilateral rotation of the trunk, lateral flexion of the trunk, anterior pelvic tilt

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20
Q

what is the innervation of the erector spinae group

A

dorsal rami of the corresponding level

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21
Q

what is the origin of the quadratus lumborum

A

transverse processes of L1-L4 and 12th rib

22
Q

What is the insertion of quadratus lumborum

A

posterior portion of iliac crest and iliolumbar ligament

23
Q

What are the actions of the quadratus lumborum

A

Unilateral: lateral flexion of trunk, elevation of the same side of the pelvis; Bilateral: Extension of trunk, anterior pelvic tilt, depression of 12th rib

24
Q

What is the innervation of quadratus lumborum

A

lumbar plexus

25
Q

What is the origin of the anterior scalene

A

Transverse process of C2 to C7

26
Q

What is the insertion of the anterior scalene

A

Scalene tubercle of rib one

27
Q

what nerve innervates the scalene muscles

A

ventral rami of cervical nerves

28
Q

What are the functions of the anterior scalene

A

flexion of neck, lateral flexion of neck, elevation of rib one

29
Q

what is the origin of the middle scalene

A

Transverse process of C2 to seven

30
Q

What is the insertion of middle scalene

31
Q

What are the actions of the middle scalene

A

flexion of the neck, lateral flexion of the neck, elevation of rib one

32
Q

What is the origin of the posterior scalene

A

transverse process of C5 to 7

33
Q

what is the insertion of posterior scalene

34
Q

what are the actions of the posterior scalene

A

Lateral flexion of neck, elevation of rib 2

35
Q

What muscles are included in the infrahyoids

A

sternohyoid, sternothyroid, thyrohyoid, omohyoid

36
Q

What muscles are included in the suprahyoids?

A

digastric, stylohyoid, mylohyoid, geniohyoid

37
Q

What are the actions of the infrahyoids?

A

depression of hyoid bone

38
Q

What are the actions of the suprahyoid

A

elevation of hypid

39
Q

What nerves innervate they hyoid muscles?

A

trigeminal, facial, hypoglossal and cervical plexus

40
Q

What is the origin of the gluteus maximus

A

posterior iliac crest, posterolateral sacrum, coccyx and sacrotuberous ligament

41
Q

What is the insertion of the gluteus maximus

A

IT band and gluteal tuberosity of the femur

42
Q

What are the actions of the gluteus maximus

A

extension of thigh at hip joint, lateral rotation of thigh at hip joint, abduction of thigh at hip joint(upper 1/3), adduction of thigh at hip joint(lower 2/3), posterior pelvic tilt at hip joint

43
Q

What nerve innervates the gluteus maximus

A

inferior gluteal nerve

44
Q

What is the origin of the gluteus medius

A

ilium, inferior to iliac crest in between the anterior and posterior gluteal lines

45
Q

What is the insertion of the gluteus medius

A

Greater trochanter of the femur

46
Q

What are the actions of the gluteus medius

A

abduction of thigh at hip joint, flexion of thigh at hip joint(ant fibres), medial rotation of thigh at hip joint(ant fibres), extension of thigh at hip joint(post fibres), lateral rotation of thigh at hip joint(post fibres), anterior pelvic tilt(ant fibres), posterior pelvic tilt(post fibres)

47
Q

what is the origin of the piriformis

A

anterior sacrum and anterior surface of the sacrotuberous ligament

48
Q

What is the insertion of the piriformis

A

Greater trochanter of the femur

49
Q

What are the actions of the piriformis

A

lateral rotation of thigh at the hip joint

50
Q

what nerve innervates the gluteus medius

A

superior gluteal nerve

51
Q

What innervate the piriformis

A

nerve to piriformis of Lumbrosacral plexus

MSAKT (5 decks)

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