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Anatomy > muscles of the forearm, hand, leg, foot > Flashcards

muscles of the forearm, hand, leg, foot Flashcards

1
Q

what does the anterior compartment contain?

A

pronators and flexor muscle

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2
Q

what are the pronators of the arm?

A

pronator teres, superficial
pronator quadratus, deep

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3
Q

what do the flexors of the forearm do and where does it originate?

A

flex wrist, MP joints (knuckles), and IP joints (fingers)
origin: medical epicondyle

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4
Q

what is pronation?

A

rotation of the radius across the surface of the ulna

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5
Q

what is the flexor retinaculum?

A

flexor that is bands of dense regular CT to hold flexor tendons close to bone, forms the roof of the carpal tunnel

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6
Q

what is the carpal tunnel?

A

space underneath the flexor retinaculum

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7
Q

what is carpal tunnel syndrome?

A

inflammation of structures beneath the flexor retinaculum, causes pressure, pain, pins and needles, from bending wrists too much

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8
Q

what is the flexor carpi radialis?

A

flexes wrist and abducts hand

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9
Q

what is the palmaris longus?

A

flexes wrist

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10
Q

what is the only muscle in wrist not in carpal tunnel?

A

palmaris longus

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11
Q

what is the flexor carpi ulnaris?

A

flexes wrist and adducts hand, not attached to fingers stops at wrist

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12
Q

what is the flexor digitorum superficialis?

A

flexes wrist and flexes digits 2 through 5 at the MP and PIP joints

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13
Q

What is the flexor digitorum profundus and attachment?

A

Deep muscle that flexes wrist, flexes digits 2-5 at the MP, PIP, and DIP joints, tendons attach to distal phalanges

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14
Q

what is the flexor pollicis longus?

A

Flexes wrist, MP joint and IP joint of thumb

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15
Q

What does the posterior forearm contain?

A

supinator and extensors

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16
Q

What do extensors of formarm originate from?

A

Lateral epicondyle of the humerus

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17
Q

what is the extensor retinaculum?

A

Extends wrist, MP joint, and IP joints

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18
Q

what is the extensor carpi ulnaris?

A

superficial muscle that extends wrist and adducts hand

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18
Q

What is the extensor carpi radialis longus?

A

a superficial muscle that extends wrist and abducts hand

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19
Q

What is the extensor carpi radialis brevis?

A

superficial muscle that extends wrist and abducts hand

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19
Q

What is the extensor digitorum?

A

Superficial muscle that extends wrist and extends digits 2-5 at MP, PIP, and DIP joints

20
Q

what is the extensor pollicis longus?

A

deep muscle that extends thumb

20
Q

What is the thenar muscle?

A

moves the thumb only

21
Q

What is the extensor pollicis longus?

A

Deep muscle that extends thumb

22
Q

what is the extensor pollicis brevis?

A

Deep muscle that extends thumb

23
Q

What is the hypothenar muscle?

A

moves little finger

24
Q

what is the lumbricals?

A

flex the MP joints and extends PIP and DIP joints

24
Q

what is the midpalmer muscle?

A

Moves fingers 2-5

25
Q

What is the Palmar interossei?

A

Flexes MP joints and extends PIP and DIP joints and adducts fingers

26
Q

what is the dorsal interossei?

A

flexes MP joints and PIP and DIP joints and abducts fingers

27
Q

What is the function of the anterior compartment of leg?

A

dorsiflexion of the foot at the ankle joint

28
Q

what is the function of the tibialis anterior and attachment?

A

Dorsiflex foot at ankle joint, inverts foot, tendon attaches to plantar side of foot

29
Q

What is the function of the extensor digitorum longus?

A

dorsiflexes foot and extends toes 2-5

30
Q

what is the function of the extensor hallucis longus?

A

dorsiflexes foot and extends big toe

31
Q

What is the function of the fibularis longus and its attachment?

A

Everts foot and weakly plantar flexes foot, tendon travels to sole of the foot to big toe

31
Q

What is the function of the lateral compartment of the leg?

A

Everts foot and weakly plantar flexes foot

32
Q

What’s the function of the fibularis brevis and attachment?

A

Everts foot and weakly plantar flexes foot, tendon attaches to base of 5th metatarsal

33
Q

What is the function of the posterior compartment of the leg?

A

plantar flexes the foot at the ankle joint

34
Q

what is the function of the gastrocnemius muscle?

A

plantar flexes the foot at the ankle joint, flexes leg at knees joint

35
Q

what is the function of the soleus?

A

Gastrocnemius and soleus together attach to the heel and calcaneal tendon (Achilles tendon) a powerful plantar flexor

36
Q

what is the function of the plantaris?

A

plantar flexes the foot at the ankle joint, flexes the leg at the knee joint

37
Q

What Is the function of the popliteus?

A

plantar flexes the foot at the ankle joint, flexes the leg at knee joint

38
Q

what is the function of the flexor hallucis longus and attachment?

A

plantar flexes the foot at the ankle joint, flexes the big toe, attaches from fibula to big toe

39
Q

what is the function of the flexor digitorum longus and attachment?

A

plantar flexes the foot at the ankle joint, flexes toes 2-5, attaches from tibia to toes

40
Q

what is the function of the tibialis posterior and attachment?

A

plantar flexes the foot at the ankle joint, inverts foot, attached to tibia

41
Q

What is the function of the extensor digitorum brevis?

A

extends toes 2-4

42
Q

what is the function of the extensor hallucis brevis?

A

Extends big toe

43
Q

What’s the function of the plantar aponeurosis?

A

protection and helps with movement

44
Q

The muscles in the anterior compartment of the LEG perform this common function?

A

dorsiflex the foot at the ankle joint

45
Q

what is the abductor pollicis longus?

A

abducts thumb

Anatomy (19 decks)

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