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SCT1 Anatomy Midterm Exam > The Intrinsic Foot Muscles > Flashcards

The Intrinsic Foot Muscles Flashcards

1
Q

TRUE or FALSE

There is only one intrinsic foot muscle in the dorsum of the foot.

A

TRUE

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2
Q

(O) Superior/proximal attachment:
ANTERIOR DORSAL SURFACE OF CALCANEUS

(I) Inferior/distal attachment:
MEDIAL DISTAL 4 PHALANGES

Action:
EXTENSION OF MEDIAL 4 TOES

A

EXTENSOR DIGITORUM BREVIS

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3
Q

Where is extensor digitorum brevis located?

A

DORSUM OF THE FOOT

from DORSAL SURFACE OF CALCANEUS
to MEDIAL DISTAL 4 PHALANGES

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4
Q

What action is extensor digitorum brevis responsible for?

A

EXTENSION OF MEDIAL 4 TOES

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5
Q

Where does extensor digitorum brevis articulate superiorly and proximally?

A

ANTERIOR DORSAL SURFACE OF CALCANEUS

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6
Q

Where does extensor digitorum brevis articulate inferiorly and distally?

A

MEDIAL DISTAL 4 PHALANGES

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7
Q

How many muscular layers are there in the sole of the foot?

A

4

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8
Q

Name the 3 muscles in the first (most superficial) layer of the foot?

A 
ABDUCTOR HALLUCIS
\+
FLEXOR DIGITORUM BREVIS
\+
ABDUCTOR DIGITI MINIMI
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9
Q

(O) Superior/proximal attachment:
MEDIAL PROCESS OF CALCANEUS AND PLANTAR APONEUROSIS

(I) Inferior/distal attachment:
MEDIAL SIDE OF THE BASE OF THE PROXIMAL PHALANX OF THE 1ST TOE

Action:
ABDUCTION OF 1ST TOE

A

ABDUCTOR HALLUCIS

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10
Q

(O) Superior/proximal attachment:
MEDIAL PROCESS OF CALCANEUS AND PLANTAR APONEUROSIS

(I) Inferior/distal attachment:
BOTH SIDES OF MIDDLE PHALANGES OF 2ND-5TH TOES
***TENDONS SPLIT TO ATTACH TO SIDES OF PHALANX

Action:
FLEXION OF 2ND-5TH TOES

A

FLEXOR DIGITORUM BREVIS

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11
Q

(O) Superior/proximal attachment:
MEDIAL PROCESS OF CALCANEUS AND PLANTAR APONEUROSIS

(I) Inferior/distal attachment:
LATERAL SIDE OF THE BASE OF THE PROXIMAL PHALANX OF THE 5TH TOE

Action:
ABDUCTION OF 5TH TOE

A

ABDUCTOR DIGITI MINIMI

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12
Q

Abductor hallucis is responsible for which action?

A

ABDUCTION OF 1ST TOE

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13
Q

Name the superior proximal attachment for abductor hallucis?

A

MEDIAL PROCESS OF CALCANEUS AND PLANTAR APONEUROSIS

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14
Q

Name the inferior distal attachment for abductor hallucis?

A

MEDIAL SIDE OF THE BASE OF THE PROXIMAL PHALANX OF THE 1ST TOE

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15
Q

Flexor digitorum brevis is responsible for which action?

A

FLEXION OF 2ND-5TH TOES

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16
Q

Name the superior proximal attachment for flexor digitorum brevis?

A

MEDIAL PROCESS OF CALCANEUS AND PLANTAR APONEUROSIS

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17
Q

Name the inferior distal attachment for flexor digitorum brevis?

A

BOTH SIDES OF MIDDLE PHALANGES OF 2ND-5TH TOES

***TENDONS SPLIT TO ATTACH TO SIDES OF PHALANX

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18
Q

Abductor digiti minimi is responsible for which action?

A

ABDUCTION OF 5TH TOE

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19
Q

Name the superior proximal attachment for abductor digiti minimi?

A

MEDIAL PROCESS OF CALCANEUS AND PLANTAR APONEUROSIS

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20
Q

Name the inferior distal attachment for abductor digiti minimi?

A

LATERAL SIDE OF THE BASE OF THE PROXIMAL PHALANX OF THE 5TH TOE

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21
Q

How many muscles are found in the second layer of the foot? Name them.

A

2 MUSCLES IN SECOND LAYER OF FOOT

QUADRATUS PLANTAE
+
LUMBRICALS

***tendons of FHL and FDL also in this layer

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22
Q

(O) Superior/proximal attachment:
PLANTAR SURFACE OF CALCANEUS

(I) Inferior/distal attachment:
POSTEROLATERAL MARGIN OF FDL TENDONS

Action:
ASSISTS IN FDL FLEXION OF LATERAL 4 DIGITS

A

QUADRATUS PLANTAE

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23
Q

(O) Superior/proximal attachment:
FDL TENDONS

(I) Inferior/distal attachment:
EXTENSOR EXPANSION, AND MEDIAL SIDES OF PROXIMAL PHALANGES OF THE LATERAL 4 TOES

Action:
FLEXION OF THE MTP JOINTS
EXTENSION OF PIPs/DIPs

A

LUMBRICALS

24
Q

Quadratus plantae is responsible for which action?

A

ASSISTS IN FDL FLEXION OF LATERAL 4 DIGITS

25
Q

Name the superior proximal attachment for quadratus plantae?

A

PLANTAR SURFACE OF CALCANEUS

26
Q

Name the inferior distal attachment for quadratus plantae?

A

POSTEROLATERAL MARGIN OF FDL TENDONS

27
Q

Lumbricals are responsible for which two actions?

A

FLEXION OF THE MTP JOINTS

EXTENSION OF PIPs/DIPs

28
Q

Name the superior proximal attachment for lumbricals

A

FDL TENDONS

29
Q

Name the inferior distal attachment for lumbricals

A

EXTENSOR EXPANSION, AND MEDIAL SIDES OF PROXIMAL PHALANGES OF THE LATERAL 4 TOES

30
Q

The three muscles in the third layer of the foot and found in the _________ 1/2 of the foot.

31
Q

___ muscles in the third layer act on the 1st toe; while ___ acts on the 5th.

A

2 ACT ON FIRST TOE

1 ACTS ON 5TH TOE

32
Q

(O) Superior/proximal attachment:
PLANTAR SURFACE OF CUBOID AND 3RD CUNEIFORM

(I) Inferior/distal attachment:
BOTH SIDES OF BASE OF PROXIMAL PHALANX OF 1ST TOE

Action:
FLEXION OF 1ST MTP JOINT

*** 2 SESAMOID BONES EMBEDDED IN TENDON WHICH PROTECT TENDONS FROM PRESSURE DURING STANDING AND WALKING

A

FLEXOR HALLUCIS BREVIS

33
Q

(O) Superior/proximal attachment (OBLIQUE HEAD):
BASES OF 2ND-4TH METATARSALS
(O) Superior/proximal attachment (TRANSVERSE HEAD):
PLANTAR LIGAMENTS OF THE MTP JOINTS

(I) Inferior/distal attachment (BOTH HEADS):
LATERAL SIDE OF BASE OF PROXIMAL PHALANX OF 1ST TOE

Action:
ADDUCTS 1ST TOE

***ALSO HELPS MAINTAIN TRANSVERSE ARCH

A

ADDUCTOR HALLUCIS

34
Q

(O) Superior/proximal attachment:
BASE OF 5TH METATARSAL

(I) Inferior/distal attachment:
BASE OF PROXIMAL PHALANX OF 5TH TOE

Action:
FLEXION OF 5TH MTP JOINT

A

FLEXOR DIGITI MINIMI BREVIS

35
Q

Flexor hallucis brevis is responsible for which action?

A

FLEXION OF 1ST MTP JOINT

36
Q

Name the superior proximal attachment for flexor hallucis brevis?

A

PLANTAR SURFACE OF CUBOID AND 3RD CUNEIFORM

37
Q

Name the inferior distal attachment for flexor hallucis brevis?

A

BOTH SIDES OF BASE OF PROXIMAL PHALANX OF 1ST TOE

38
Q

Adductor hallucis is responsible for which action?

A

ADDUCTS 1ST TOE

39
Q

Name the superior proximal attachment for adductor hallucis oblique head?

A

BASES OF 2ND-4TH METATARSALS

40
Q

Name the superior proximal attachment for adductor hallucis transverse head?

A

PLANTAR LIGAMENTS OF THE MTP JOINTS

41
Q

Name the inferior distal attachment for adductor hallucis?

A

LATERAL SIDE OF BASE OF PROXIMAL PHALANX OF 1ST TOE

42
Q

Flexor digiti minimi brevis is responsible for which action?

A

FLEXION OF 5TH MTP JOINT

43
Q

Name the superior proximal attachment for flexor digiti minimi brevis?

A

BASE OF 5TH METATARSAL

44
Q

Name the inferior distal attachment for flexor digiti minimi brevis?

A

BASE OF PROXIMAL PHALANX OF 5TH TOE

45
Q

What are the two muscles found in the fourth and deepest layer of the foot?

A

DORSAL INTEROSSEI
+
PLANTAR INTEROSSEI

46
Q

What are the movement acronyms associated with the muscles in the deepest layer of the foot?

A

DAB (DORSAL ABDUCTION)
+
PAD (PLANTAR ADDUCTION)

47
Q

What is the midline reference when discussing abduction and adduction of the toes?

A

THROUGH THE 2ND TOE

48
Q

(O) Superior/proximal attachment:
ADJACENT SIDES OF METATARSALS

(I) Inferior/distal attachment (1ST):
MEDIAL SIDE OF PROXIMAL PHALANX OF 2ND TOE
(I) Inferior/distal attachment (2ND - 5TH):
LATERAL SIDES OF PROXIMAL PHALANGES 2ND-4TH TOES

Action:
ABDUCTION OF 2ND - 4TH MTP JOINTS (DAB)

A

DORSAL INTEROSSEI

49
Q

(O) Superior/proximal attachment:
BASES AND MEDIAL SIDES OF 3RD - 5TH METATARSALS

(I) Inferior/distal attachment:
MEDIAL SIDES OF BASES OF PROXIMAL PHALANGES 3 - 5

Action:
ADDUCTION OF THE 3RD - 5TH MTP JOINTS (PAD)

A

PLANTAR INTEROSSEI

50
Q

Dorsal interossei is responsible for which action?

A

ABDUCTION OF 2ND - 4TH MTP JOINTS (DAB)

51
Q

Name the superior proximal attachment for dorsal interossei?

A

ADJACENT SIDES OF METATARSALS

52
Q

Name the inferior distal attachment for dorsal interossei 1ST?

A

MEDIAL SIDE OF PROXIMAL PHALANX OF 2ND TOE

53
Q

Name the inferior distal attachment for dorsal interossei 2ND - 5TH?

A

LATERAL SIDES OF PROXIMAL PHALANGES 2ND-4TH TOES

54
Q

Abductor hallucis, flexor digitorum brevis, and abductor digiti minimi are found in which layer of the foot?

A

FIRST LAYER

55
Q

Quadratus plantae and the lumbricals are found in which layer of the foot?

A

SECOND LAYER

56
Q

Flexor hallucis brevis, adductor hallucis, and flexor digiti minimi brevis are found in which layer of the foot?

A

THIRD LAYER

57
Q

Dorsal interossei and plantar interossei are found in which layer of the foot?

A

FOURTH LAYER

SCT1 Anatomy Midterm Exam (29 decks)

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