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gross anatomy > Muscles unit III > Flashcards

Muscles unit III Flashcards

1
Q

Iliacus attachments

A

O: iliac fossa, sacrum
I: lesser trochanter of femur

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2
Q

Poas major attachments

A

O: Bodies and transverse processes of lumbar vertebrae
I: lesser trochanter

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3
Q

Actions of the iliopsoas

A

Flexion at hip, flexion of spinal column, maintain posture.

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4
Q

Innervation of the iliopsoas

A

Femoral nerve (L2-4)

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5
Q

What percentage of the population has a Psoas minor muscle?

A

About 50%

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6
Q

Attachments of the Psoas minor

A

O: bodies of lumbar vertebrae
I: iliopubic eminence

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7
Q

Action of the Psoas minor

A

Flex pubic bone

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8
Q

Innervation of the Psoas minor

A

L1

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9
Q

Attachments of the sartorius

A

O: asis
I: superior medial shaft of tibia

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10
Q

Actions of the sartorius

A

Flex hip and knee at the same time, abduct and laterally rotate femur, medially rotate leg

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11
Q

Innervation of the sartorius

A

Femoral nerve

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12
Q

Quadriceps muscles

A

Rectus femoris, vastus medialis, vastus lateralis, vastus intermedius

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13
Q

Insertion of the quadriceps muscles

A

Base of the patella

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14
Q

Origin of the rectus femoris

A

AIIS, acetabulum

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15
Q

Origin of vastus lateralis

A

Greater trochanter and linea aspera

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16
Q

Origin of the vastus medialis

A

Linea aspera

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17
Q

Origin of vastus intermedius

A

Anterior-lateral aspect of femur and linea aspera

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18
Q

Fibers sometimes separate from vastus intermedius to form what muscle? Where does that muscle insert?

A

Articularis genu, synovial membrane of the knee joint

19
Q

Action of the articularis genu

A

Retract synovial membrane to stabilize knee joint

20
Q

Action of all quadriceps muscles

A

Extend knee joint, strengthen knee joint

21
Q

Action of rectus femoris only

A

Flex femur at hip joint

22
Q

What is a cramp or spasm of the quadriceps called?

A

Charley Horse

23
Q

What is an overuse injury of the quadriceps tendon of insertion and/or the patellar ligament called?

A

Jumper’s knee

24
Q

Which spinal nerves are tested during a patellar reflex test?

A

L2-L4

25
Q

Which muscles are part of the adductor group?

A

Gracilis, pectineus, adductor longus, adductor brevis, and adductor magnus

26
Q

The adductor group muscles are innervated by which nerve?

A

The obturator nerve

27
Q

Attachments of gracilis

A

O: Ramus of ischium, inferior ramus of pubis
I: superior medial shaft of tibia.

28
Q

Actions of gracilis

A

Flex leg, adduct femur

29
Q

What surgical procedure is the gracilis involved in?

A

It is often transplanted to replace a damaged muscle

30
Q

Attachments of pectineus

A

O: superior ramus
I: pectineal line

31
Q

Actions of the pectineus

A

Adduct femur, flex hip

32
Q

Innervation of pectineus

A

Femoral and obturator nerves

33
Q

Attachments of adductor magnus

A

O: rami of pubis and ischium
I: linea aspera, adductor tubercle

34
Q

Actions of adductor magnus

A

Adduct femur, extend femur at hip

35
Q

Innervation of adductor magnus

A

Obturator and sciatic nerve

36
Q

Attachments of adductor longus

A

O: Superior ramus of pubis
I: linea aspera

37
Q

Attachments of adductor brevis

A

O: inferior ramus of pubis
I: pectineal line, linea aspera

38
Q

Attachments of tensor fascia lata

A

O: crest of ilium
I: iliotibial tract

39
Q

Actions of the tensor fascia lata

A

Flex, abduct, medially rotate femur, stabilize knee

40
Q

Innervation of the tensor fascia lata

A

Superior gluteal nerve

41
Q

Attachments of Gluteus maximus

A

I: posterior gluteal line, sacrum and coccyx, posterior ligaments of SI joint
O: gluteal tuberosity, iliotibial tract

42
Q

Actions of Gluteus maximus

A

Extend and laterally rotate femur, stabilize knee and pelvic bone

43
Q

Innervation of Gluteus maximus

A

Inferior gluteal nerve

gross anatomy (8 decks)

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