review 5

Question 0

what does the flexor retinaculum look like? Do?

Answer 0

Its a fibrous band that spans the anterior surface of the wrist in a horizontal direction.
its made up of the palmar carpal ligament, transverse carpal ligament, which forms the carpal tunnel.

Question 1

what does the EDM do?

extensor digitorum muscle

Answer 1

A EXTENDS the 2nd and 5th fingers @ MCP/ IP joints

Question 2

with arthritis comes deformity. What is boutonniere’s deformity?

Answer 2

It’s extension of the MCP
flexion of the PIP
Extension of the DIP

Question 3

which muscle supinates the arm?

Answer 3

the SUPINATOR
O- lateral epicondyle of humerus
I- anterior, lateral surface of proximal radial shaft.

Question 4

what is the reference related to the thumb for extonsor vs. flexor muscles and where they originate?

Answer 4

they are referenced as EXTRINSIC MUSCLES, primarly function is thumb and fingers.

Question 5

the manner in which the hand is used depends on what?

Answer 5

the size, shape, and weight of the object.