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anat 314 material > Intrinsic Hand > Flashcards

Intrinsic Hand Flashcards

1
Q

What muscle is found under the palmar aponeurosis?

A

Palmaris brevis

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2
Q

What is the action of the flexor retinaculum?

A

Prevents bowing of the tendons of the digital flexors

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3
Q

What are the contents of the carpal tunnel?

A

Tendons of flexor digitorum superficialis, flexor digitorum profundus and flexor pollicis longus, median nerve

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4
Q

The ulnar canal is formed by the __________ carpal ____________ stretching from the tendon of flexor carpi _______ to the flexor ____________

A

Palmar; ligament; ulnaris; retinaculum

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5
Q

What are the muscles of the superficial thenar eminence?

A

Abductor pollicis brevis, flexor pollicis brevis and opponens pollicis

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6
Q

What are the actions of the muscles of the superficial thenar eminence?

A

Abduction and flexion of thumb, opposition

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7
Q

What innervates the muscles of the superficial thenar eminence?

A

Recurrent branch of median nerve

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8
Q

What are the muscles of the deep thenar eminence?

A

Adductor pollicis (transverse and oblique head)

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9
Q

What innervates the adductor pollicis?

A

Deep ulnar nerve

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10
Q

What are the muscles of the hypothenar eminence?

A

Abductor digiti minimi, flexor digiti minimi brevis and opponens digiti minimi

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11
Q

What innervates the hypothenar eminence?

A

Deep ulnar nerve

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12
Q

What are the functions of the lumbricals?

A

Flexion of MCP and extension of IP joints

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13
Q

What innervates the lumbricals?

A

Median and deep ulnar nerves

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14
Q

What are the muscles of the interosseous compartment?

A

Palmar interossei and dorsal interossei

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15
Q

What innervates the palmar interossei and dorsal interossei?

A

Deep ulnar nerve

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16
Q

The palmar interossei _________ while the dorsal interossei ___________

A

Adducts; abducts

17
Q

What is the purpose of synovial sheaths?

A

Reduce friction

18
Q

What is the role of fibrous sheaths?

A

Keep tendons from bowing

19
Q

What do the three arterial arches supply?

A

Metacarpals and digits

anat 314 material (22 decks)

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