BIOL 203 – Summer 2012 Instructor: Alexandra Okihiro The Forearm, Wrist and Hand Head Radial Tuberosity Styloid Process Olecranon Process Trochlear Notch.

BIOL 203 – Summer 2012Instructor: Alexandra OkihiroThe Forearm, Wrist and Hand

Head

Radial Tuberosity

Styloid Process

Styloid Process

Olecranon Process

Trochlear Notch (U shape)

Radial Notch

Head

[Note: The ulna is the only bone where the “head” is found at the distal end instead of proximal end.]

Right Hand

Distal Phalanx of Digit 5

Middle Phalanx of Digit 5

Proximal Phalanx of Digit 5

Distal Phalanx of Pollex (Digit 1)

Proximal Phalanx of Pollex (Digit 1)

Metacarpal 5Metacarpal 1

Carpals (There are 8 total)

Muscles that Move the Forearm, Hand and Fingers

1. Palmaris Longus2. Flexor Carpi Radialis3. Flexor Carpi Ulnaris4. Flexor Digitorum Superficilalis5. Flexor Digitorum Profundus

6. Flexor Pollicis Longus

1

2

3

4

4

5

6

Muscles that Move the Forearm, Hand and Fingers

7. Extensor Digitorum8. Extensor Carpi Radialis Longus & Brevis9. Extensor Carpi Ulnaris 10. Extensor Pollicis Brevis11. Abductor Pollicis Longus

7

88

9

1011

Palmar Aponeurosis

Flexor Retinaculum

Hand

The Forearm, Wrist and Hand

[Note: The ulna is the only bone where the “head” is found at the distal end instead of proximal end.]

Muscles that Move the Forearm, Hand and Fingers

1

2

3

4

4

5

6

Muscles that Move the Forearm, Hand and Fingers

7

88

9

1011

Hand