Thenar Eminence (meaty tissue at base of thumb)

Question 1

Flexor Pollicis Brevis (origin)

Answer 1

flexor retinaculum and tubercle of trapezium

Question 2

Flexor Pollicis Brevis (insertion)

Answer 2

Lateral side of base of proximal phalanx of thumb

Question 3

Flexor Pollicis Brevis (action)

Answer 3

flexes proximal phalanx of thumb

Question 4

Flexor Pollicis Brevis (innervation)

Answer 4

Median nerve

Question 5

Abductor Pollicis Brevis (origin)

Answer 5

Flexor retinaculum, tubercles of scaphoid and trapezium

Question 6

Abductor Pollicis Brevis (insertion)

Answer 6

Lateral side of base of proximal phalanx of thumb

Question 7

Abductor Pollicis Brevis (action)

Answer 7

abducts thumb

Question 8

Abductor Pollicis Brevis (innervation)

Answer 8

median nerve

Question 9

Opponens Pollicis (origin)

Answer 9

Flexor retinaculum and tubercle of trapezium

Question 10

Opponens Pollicis (insertion)

Answer 10

lateral side of 1st metacarpal

Question 11

Opponens Pollicis (action)

Answer 11

Draws 1st metacarpal forward and rotates it medially

Question 12

Opponens Pollicis (innervation)

Answer 12

median nerve