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Human Anatomy🫀 > Lab 7 > Flashcards

Lab 7 Flashcards

1
Q

Pronator Teres

A

Origin: Medial epicondyle of the humerus

Insertion: Mid-shaft of lateral radius

Innervation: Median nerve

Main actions: Radioulnar pronation

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2
Q

Flexor Carpi Radialis
(Radial side, “wrist”)

A

Origin: medial epicondyle of humerus

Insertion: base of metacarpals 2 and 3

Innervation: median nerve

Main actions: wrist flexion and abduction

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3
Q

Palmaris Longus

A

Origin: medial epicondyle of humerus

Innervation: median nerve

Main actions: wrist flexion

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4
Q

Flexor carpi ulnaris

A

Origin: medial epicondyle of humerus

Insertion: base of 5th metacarpal

Innervation: Ulnar nerve

Main actions: wrist flexion and adduction

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5
Q

Flexor Digitorum Superficialis

A

Origin: Medial epicondyle of the humerus

Insertion: digits 2-5

Innervation: Median nerve

Main actions: flexion and elbow flexion

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6
Q

Flexor Digitorum Profundus ⭐️

A

Origin: anterior ulna

Insertion: distal phalanges

Innervation: lateral half median nerve

Main actions: wrist flexion

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7
Q

Flexor Pollicis Longus

A

Origin: anterior radius and lateral half of the interosseous membrane

Insertion: palmar surface of distal phalanx of the thumb

Innervation: median nerve

Main action: thumb flexion

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8
Q

Pronator Quadratus

A

Origin: lower/distal 1/4 anterior ulna

Insertion: lower/distal 1/4 anterior radius

Innervation: median nerve

Main actions: radio-ulnar pronation

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9
Q

Brachioradialis (drink from a cup)

A

Origin: lateral supracondylar ridge of the humerus

Insertion: Styloid process of the radius

Innervation: radial nerve

Main action: elbow flexion in semi-pronation

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10
Q

Extensor Carpi Radialis Longus

A

Origin: lateral epicondyle of humerus

Insertion: dorsal surface of base of metacarpal 2

Innervation: Radial nerve

Main actions: wrist extension and abduction

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11
Q

Extensor Carpi Radialis Brevis

A

Origin: lateral epicondyle of humerus

Insertion: base of metacarpals 2 and 3

Innervation: radial nerve

Main actions: wrist extension and abduction

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12
Q

Extensor Digitorum

A

Origin: lateral epicondyle of humerus

Insertion: base of distal phalanges of digits 2-5

Innervation: radial nerve

Main actions: wrist extension

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13
Q

Extensor Digiti Minimi ⭐️

A

Origin: lateral epicondyle of humerus

Insertion:extensor hood of digit 5

Innervation: posterior interosseous nerve

Main actions: extension of digit 5

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14
Q

Extensor carpi ulnaris

A

Origin: lateral epicondyle of humerus

Insertion: base of 5th metacarpal

Innervation: posterior interosseous nerve

Main actions: wrist extension and adduction

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15
Q

Abductor Pollicis Longus

A

Origin: posterior surfaces of ulna and radius

Insertion: base of first metacarpal

Innervation: posterior and interosseous nerve

Main actions: thumb abduction

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16
Q

Extensor Pollicis Longus
(Can see when thumb is stretched up)

A

Origin: posterior surfaces of ulna

Insertion: dorsal surface of base of distal phalanx of thumb

Innervation: posterior interosseous nerve

Main actions: thumb extension ( thumbs up)

17
Q

Extensor Pollicis Brevis

A

Origin: posterior surface of radius

Insertion: dorsal surface of base of the proximal phalanx of thumb

Innervation: posterior interosseous nerve

Main action: thumb extension

18
Q

Extensor Indices

A

Origin: Posterior surface of ulna

Insertion: extensor hood of digit 2

Innervation: posterior interosseous nerve

Main actions: extension of digit 2

19
Q

Supinator
(For supination pronation, radius bone that moves)

A

Origin: lateral epicondyle of humerus

Insertion: posterior proximal radius

Innervation: posterior interosseous nerve

Main action: radio-ulnar supination

20
Q

Flexor Pollicis Brevis
(Third layer of forearm)

A

Origin: Flexor Retinaculum

Insertion: proximal phalanx of digit 1

Innervation: branch of median nerve

Main actions: thumb flexion

21
Q

Abductor Pollicis Brevis

A

Origin: flexor retinaculum

Insertion: radial side of base of proximal phalanx

Innervation: branch of median nerve

Main action: thumb abduction

22
Q

Opponens Pollicis

A

Origin: Flexor retinaculum

Insertion: Lateral side of the length of 1st metacarpal

Innervation: branch of median nerve

Main action: opposition of the thumb and other digits

23
Q

Adductor Pollicis (Brevis)

A

Origin: oblique head and transverse head

Insertion: proximal phalanx of the thumb

Innervation: branch of ulnar nerve

Main action: adducts thumb

24
Q

Abductor digiti Minimi

A

Origin: Pisiform

Insertion: base of the 5th proximal phalanx

Innervation: branch of ulnar nerve

Main action: abduction of 5th digit

25
Q

Flexor Digiti Minimi Brevis

A

Origin: hamate

Insertion: base of 5th proximal phalanx

Innervation: branch of ulnar nerve

Main action: flexion of 5th digit

26
Q

Opponens Digiti Minimi

A

Origin: Hamate

Insertion: Ulnar border of 5th metacarpal

Innervation: branch of ulnar nerve

Main action: opposition of 5th digit to thumb

27
Q

Lumbricals (in palm)

A

Origin: tendons of flexor Digitorum profundus (anterior side)

Insertion: expansions of extensor digitorum (posterior side)

Innervation: median nerve and ulnar nerve

Main actions: flexion at the metacarpophalangeal joint while also extending the interphalangeal joints (hand writing position)

28
Q

Dorsal Interossei (hand)

A

Origin: 2 metacarpals- 1st and 2nd metacarpals

Insertion: base of respective proximal phalanx

Innervation: branch of ulnar nerve

Main action: abduction of digits 2-4

29
Q

Palmar Interossei (palm)

A

Origin: palmar surfaces of metacarpals 2, 4 and 5

Insertion: extensor expansion of the same digit (anterior —> posterior)

Innervation: branch of ulnar nerve

Main actions: adduction of digits 2, 4 and 5

Human Anatomy🫀 (4 decks)

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