Living Anatomy Ch 6 Forearm, Wrist & Hand

Front 1

Where is the Pisiform?

Back 1

Base of hypothenar eminence on medial side.

Front 2

Wheree is Extensor Carpi Radialis Longus & Brevis?

Back 2

Attaches to lateral epicondyl of humerus, run to the base of metacarpals 2 & 3 on the dorsal surface.

Front 3

Where is the Extensor Carpi Ulnaris?

Back 3

Attaches to lateral epicondyle, crosses the wrist on its way to the base of the fifth metacarpal.

Front 4

Where is Flexor Digitorum Superficialis and what does it do?

Back 4

Flexes digits, runs btwn medial epicondyle of humerus and proximal anterior shaft of ulna and radius in intermediate phalanx of medial 4 digits via separate tendons.
Make fist, feel tendons medial to palmaris longus, lateral to flexor carpi ulnaris

Front 5

Where is the Extensor Digitorum?

Back 5

Attaches at the lateral epicondyle of humerus. Runs to distal phalanx of medial four digits.

Front 6

Where is Extensor Indicis?

Back 6

Runs from distal shaft of ulna to distal phalanx of 2nd digit. Extends index finger.

Front 7

Where is Extensor Pollicis Longus & Brevis?

Back 7

Two tendons of snuff box, from the dorsal radius and the ulna of the forearm to the dorsal thumb.

Front 8

Reposition of the Thumb?

Back 8

Return from opposition...hand opens back up.

Front 9

Where is Extensor Digiti Minimi

Back 9

Small muscle lies slightly medial to extensor digitorum. Extends little finger

Front 10

What 3 muscles make up the Hypothenar Eminence?

Back 10

Abductor Digiti Minimi
Flexor Digiti Minimi Brevis
Opponens Digiti Minimi

Front 11

Where are the Interphalangeal Joints?

Back 11

Formed by the articulation of two phalanxes. Each digit has two (x thumb)

Front 12

Where is Abductor Pollicis Longus?

Back 12

Btwn dorsal radius and ulna in middle of forearm to base of thumb. Just off center from thenar eminance

Front 13

Where is Flexor Pollicis Longus?

Back 13

Deep muscle of forearm, runs from dorsal radius to distal phalanx of thumb

Front 14

What 4 muscles make up Thenar Eminence?

Back 14

Opponens Pollicis
Adbustor Pollicis Brevis
Flexor Pollicis Brevis
Adductor Pollicis

Front 15

What 2 Anterior extrinsic muscles of the hand flex fingers?

Back 15

Flexor Digitorum Superficialis
Flexor Digitorum Profundus

Front 16

Where does the arcitulation btwn the wrist and forearm occur?

Back 16

As the radius contacts the eight carpal bones of the wrist.
Proximal carpal row joins the wrist to the forearm
Distal row joins the wrist to the fingers.

Front 17

Where dos the radius articulate?

Back 17

The radius articulates w/the proximal carpal row, except for the pisiform bone.

Front 18

What makes up the Proximal Carpal Row?

Back 18

Moving from lateral to medial: scaphoid, lunate, triquetrum & pisiform

Triquetrum articulates w/radius

Front 19

What makes up the Distal Carpal Row?

Back 19

Anteriorly, from lateral to medially:
Trapezium
Trapezoid
Capitate
Hamate

Front 20

Which bones make up the Phalanges & what do they articulate with?

Back 20

Phalanx
They articulate w/metacarpals.

Front 21

Where is the Hamate?

Back 21

Distal and lateral to the pisiform. Has a protrusion

Front 22

Where is the Scaphoid?

Back 22

The lateral carpal of the proximal row in the anatomical snuff box.

Front 23

What type of joint is the wrist joint and what does it articulate with?

Back 23

Biaxial joint formed by the articulation of the radius and scaphoid, lunate and triquetrum.

Front 24

Where are the Carpometacarpal Joints?

Back 24

Distal carpal row articulates w/5 metacarpals, forming the carpometacarpal joint.

Front 25

Where are the Metacarpophalangeal Joints?

Back 25

Knuckles are found where the metacarpals meet the phalanges and represent biaxial joints (x thumb-uniaxial)

Front 26

What is Radial Deviation of the wrist?

Back 26

Abductionn at the wrist. A rotation away from the body..toward the lateral side.

Front 27

What is Ulnar deviation of the wrist?

Back 27

Adduction at the wrist. Movement toward the body in frontal plane (medially)

Front 28

What is Abduction of Digits? Adduction?

Back 28

Abduction: When digits are spread (3rd digit abducts no matter which way because any movement is a move away from the mid.

Adduction: Digits are closed

Front 29

Abduction of the Thumb?

Back 29

Movement away from and anterior to the second digit

Front 30

Adduction of the thumb?

Back 30

Movement toward the second digit and posterior to the second digit

Front 31

Flexion of the Thumb?

Back 31

Movement across the palm

Front 32

Extension of the Thumb?

Back 32

Hitchhiking move...outward flex

Front 33

Opposition of the Thumb?

Back 33

Thumb closes on fingers...shadowboxing move!

Front 34

What do all the flexors of the wrist have in common?

Back 34

The have a common proximal attachment at the medial epicondyle of the humerus.

Front 35

Where is the Flexor Carpi Radialis?

Back 35

Attaches at medial epicondyle, courses down the anterior arm and crosses the wrist on the radial side. Distal attachment of at base of metacarpals 2 & 3.

Front 36

Where is the Palmaris Longus?

Back 36

Attaches at medial epicondyle, crosses wrist in sagittal plane, has a distal attachment at the palmar aponeurosis

Front 37

Where is the Flexor Carpi Ulnaris?

Back 37

Attaches at medial epicondyle, is medial to palmaris. Runs along the anterior ulna to cross the wrist and attach to the pisiform

Front 38

What is the common attachment for the Wrist Extensors?

Back 38

Lateral epicondylar ridge and epicondyle of humerus.