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Medicine, Year 2, Block 12 (Neurological, Neuromuscular, and MSK Diseases) > Movements and Muscles of the Hand > Flashcards

Movements and Muscles of the Hand Flashcards

1
Q

From lateral to medial, state the names of the 8 bones in the wrist

A

Top row:
Trapezium - Trapezoid - Capitate - Hamate

Bottom row: Scaphoid - Lunate - Triquetral - Pisiform

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2
Q

Where do the Lumbrical muscles originate from and where do they insert?

A

From the radial side of the profundus tendon, inserting onto the extensor apparatus

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3
Q

What is the innervation of the Lumbrical muscles?

A

Lateral two lumbricals (index and middle finger) = Median nerve

Medial two lumbricals (ring and pink) = Ulnar nerve

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4
Q

What is the function of the Lumbrical muscles?

A

Flexion of the MCP joints whilst keeping IP joints extended

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5
Q

What are the three muscles of the Thenar eminence?

A

Opponens Pollicis
Abductor Pollicis Brevis
Flexor Pollicis Brevis

OAF

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6
Q

What are the Thenar eminence muscles nerve supply?

A

Median nerve

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7
Q

What are the three muscles of the Hypothenar eminence?

A

Opponens Digiti Minimi
Abductor Digiti Minimi
Flexor Digiti Minimi Brevis

OAF

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8
Q

What are Hypothenar Eminence nerve supply?

A

Ulnar nerve

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9
Q

What are the roles of the Palmar and Dorsal Interossei muscles?

A

Dorsal Interossei - Abduction of the fingers at the MCP

Palmar Interossei - Adduction of the fingers at the MCP

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10
Q

What is the nerve supply for the Interossei muscles?

A

Ulnar nerve

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11
Q

What is the nerve supply for the Adductor Pollicies?

A

Ulnar nerve

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12
Q

What is the nerve supply for Palmaris Brevis?

A

Ulnar nerve

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13
Q

Abduction of the thumb tests what nerve purely?

A

Medial nerve

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14
Q

Adduction of the thumb tests what nerve purely?

A

Ulnar nerve

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15
Q

Which of the Lumbricals are unipennate and bipennate?

A

Lateral two lumbricals: Unipennate

Medial two lumbricals: Bipennate

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16
Q

What artery is the root for the Superficial palmar branch of the hand and supplies blood for the four fingers (ulnar side of index)?

A

Ulnar artery

17
Q

What artery is the root for the Deep palmar branch of the hand and supplies blood for the radial side of the index and the thumb?

A

Radial artery

18
Q

What is the specific branch artery of the Deep palmar arch which supplies the thumb?

A

Princeps pollicis artery

Medicine, Year 2, Block 12 (Neurological, Neuromuscular, and MSK Diseases) (36 decks)

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