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Back Muscles > Intrinsic Muscles of the Back > Flashcards

Intrinsic Muscles of the Back Flashcards

1
Q

What is the origin of the serratus posterior inferior?

A

T11-L2 (spinous processes)

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2
Q

what is the insertion of the serratus posterior superior?

A

2nd-4th ribs (superior border)

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3
Q

what is the insertion of the serratus posterior inferior?

A

8th-12th ribs (inferior borders, near angles)

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4
Q

What is the origin of the serratus posterior superior?

A

nuchal ligament; C7-T3 (spinous processes)

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5
Q

what is the innervation of the serratus posterior superior?

A

spinal nn T2-T5 (anterior rami)

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6
Q

what is the innervation of the serratus posterior inferior?

A

spinal nn T9-T12 (anterior rami)

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7
Q

what is the action of serratus posterior superior?

A

elevates the ribs

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8
Q

what is the action of serratus posterior inferior?

A

depresses ribs

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9
Q

what is the origin of the splenius capitis?

A

nuchal ligament; C3-C7 (spinous processes)

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10
Q

what is the origin of the splenius cervicis?

A

T3-T6 (spinous processes)

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11
Q

what is the insertion of the splenius capitis?

A

occipital bone (lateral superior nuchal line; mastoid process)

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12
Q

what is the insertion of the splenius cervicis?

A

C1-C2 (transverse processes)

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13
Q

what is the innervation of the splenius capitis?

A

spinal nn C10C6 (posterior rami, lateral branches)

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14
Q

what is the innervation of the splenius cervicis?

A

spinal nn C10C6 (posterior rami, lateral branches)

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15
Q

What is the action of the splenius capitis?

A

bilateral - extends cervical spine and head

unilateral - flexes and rotates head to the same side

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16
Q

what is the action of the splenius cervicis?

A

bilateral - extends cervical spine and head

unilateral - flexes and rotates head to the same side

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17
Q

what is the origin of the iliocostalis cervicis?

A

3rd-7th ribs

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18
Q

what is the origin of the iliocostalis thoracis?

A

7th-12th ribs

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19
Q

what is the origin of the iliocostalis lumborum?

A

sacrum, iliac crest, thoracolumbar fascia

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20
Q

what is the insertion of the iliocostalis cervicis?

A

C4-C6 (transverse processes)

21
Q

what is the insertion of the iliocostalis thoracis?

A

1st-6th ribs

22
Q

what is the insertion of the iliocostalis lumborum?

A

6th-12th ribs; thoracolumbar fascia (deep layer); upper lumbar vertebrae (transverse processes)

23
Q

what is the innervation of the iliocostalis cervicis?

A

spinal nn. C8-L1 (posterior rami, lateral branches)

24
Q

what is the innervation of the iliocostalis thoracis?

A

spinal nn. C8-L1 (posterior rami, lateral branches)

25
Q

what is the innervation of the iliocostalis lumborum?

A

spinal nn. C8-L1 (posterior rami, lateral branches)

26
Q

what is the action of the iliocostalis cervicis?

A

bilateral - extends spine

unilateral - bends spine laterally to the same side

27
Q

what is the action of the iliocostalis thoracis?

A

bilateral - extends spine

unilateral - bends spine laterally to the same side

28
Q

what is the action of the iliocostalis lumborum?

A

bilateral - extends spine

unilateral - bends spine laterally to the same side

29
Q

what is the origin of the longissimus capitis?

A

T1-T3 (transverse processes); C4-C7 (transverse and articular processes)

30
Q

what is the origin of the longissimus cervicis?

A

T1-T6 (transverse processes)

31
Q

what is the origin of the longissimus thoracis?

A

sacrum; iliac crest; lumbar vertabrae (spinous processes); lower thoracic vertebrae (transverse processes)

32
Q

what is the insertion of the longissimus capitis?

A

temporal bone (mastoid process)

33
Q

what is the insertion of the longissimus cervicis?

A

C2-C5 (spinous processes)

34
Q

what is the insertion of the longissimus thoracis?

A

2nd-12th ribs; lumbar vertebrae (costal processes); thoracic vertebrae (transverse processes)

35
Q

what is the innervation of the longissimus capitis?

A

Spinal nn. C1-C5 (posterior rami, lateral branches)

36
Q

what is the innervation of the longissimus cervicis?

A

Spinal nn. C1-C5 (posterior rami, lateral branches)

37
Q

what is the innervation of the longissimus thoracis?

A

Spinal nn. C1-C5 (posterior rami, lateral branches)

38
Q

what is the action of the longissimus capitis?

A

bilateral - extends head

unilateral - flexes and rotates head to the same side

39
Q

what is the action of the longissimus cervicis?

A

bilateral - extends spine

unilateral - bends spine laterally to the same side

40
Q

what is the action of the longissimus thoracis?

A

bilateral - extends spine

unilateral - bends spine laterally to the same side

41
Q

what is the origin of the spinalis cervicis?

A

C5-T12 (spinous processes)

42
Q

what is the origin of the spinalis thoracis?

A

T10-L3 (spinous process, lateral surfaces)

43
Q

what is the insertion of the spinalis cervicis?

A

C2-C5 (spinous processes)

44
Q

what is the insertion of the spinalis thoracis?

A

T2-T8 (spinous processes, lateral surfaces)

45
Q

what is the innervation of the spinalis cervicis?

A

spinal nn (posterior rami)

46
Q

what is the innervation of the spinalis thoracis?

A

spinal nn (posterior rami)

47
Q

what is the action of the spinalis cervicis?

A

bilateral - extends cervical and thoracic spine

unilateral - bends cervical and thoracic spine to the same side

48
Q

what is the action of the spinales thoracis?

A

bilateral - extends cervical and thoracic spine

unilateral - bends cervical and thoracic spine to the same side

Back Muscles (1 decks)

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