Lecure 3.1

Question 1

The two bony projections of the Troclea notch are:

Answer 1

Olceranon process - goes into olecranon fossa on humerus

Coronoid process -

Question 2

The head of the Ulna lies ….

Answer 2

distally

Question 3

Label

Answer 3

Question 4

Interosseous membrane is from the _________of the bone

Answer 4

periosteum

Question 5

Fracture of the ulna is more likely at the _____ end

Answer 5

proximal

Question 6

The ______fascia tightly binds down muscles in the arma nd forearm

Answer 6

The antebrachial fascia tightly binds down muscles

Question 7

What is likel to be initially affected by compartment syndrome?

Answer 7

Veins and lymphatics

then. ..
2) Arteries
3) Nerves

Question 8

Label and nerves/vessels and say what the muscles on each side of the cubital fossa?

Answer 8

Pronator teres - medial side

Brachioradialis - lateral side

Question 9

True or False

all 3 nerves of the forearm can be found inthe cubital fossa?

(what are the 3 nerves)

Answer 9

Median

Ulna

Radial

all 3 can be found in the cubital fossa

Question 10

Flexors are ____ powerful than extensors

skin overlying flexor muscles is ____senesitive

Answer 10

Flexors are more powerful than extensors

skin overlying flexor muscles is more senesitive

Question 11

What are the muscles in the superificla layer of the anterior flexor compartment (forearm)

Where do they all arise from?

Answer 11

Pronator teres

flexor carpi radialis

palmaris langus

flexor cari ulnaris

Arise from: Common flexor origin (CFO)

Question 12

What muscle are in the anterior flexor compartment of forearm

Answer 12

Flexor digitorum superficialis

Question 13

deep layer muscles of the anterior flexor compartment?

Answer 13

Flexr pollicis longus

flexor digitorum profundus

pronator quadratus

Question 14

what two muscles together pronate the forearm?

Answer 14

pronator teres

pronator quadratus

Question 15

True or False

The median nerve innervates all of the forearm

Answer 15

False

All EXCEPT for 1.5 muscles

The flexer carpi-ulnaris - innervated by ulna nerve

Also half muscle:

the medial two heads of the flexor digitorum profundis.

Question 16

True or False

All extensors of the forearm originate at the Lateral epicondyle (common extensor origin)

Answer 16

False

Two originate from the supracondylar ridge

brachial radialis -acts as a FLEXOR

Question 17

Label

Answer 17

Question 18

The Radial nerve is suseptible in a ______ shaft fracture,

called…

Answer 18

The Radial nerve is suseptible in a humeral shaft fracture,

called… Saturday Night palsy