3.1.4. Brachioradialis Muscle

Question 1

Which Joint does the Brachioradialis Muscle act on?

Answer 1

Radial Side of the Elbow Joint

Question 2

What action does the Brachioradialis Muscle have on the Elbow Joint?

Answer 2

Flexion of the Elbow Joint

Question 3

What is the term used describe the Brachioradialis Muscle?

Answer 3

Paradoxical Muscle

Question 4

What does the term “Paradoxical Muscle” mean?

Answer 4

Its Origin and Innervation are characteristic of an Extensor Muscle, but it is in fact a Flexor Muscle of the Elbow Joint

Question 5

When is the Brachioradialis Muscle most visible?

Answer 5

1. Forearm is Half Pronated

2. Flexion at the Elbow against Resistance

Question 6

What, in the Distal Forearm, is located between the Brachioradialis and Deep Flexor Muscles?

Answer 6

1. Radial Artery
2. Radial Nerve
   These are sandwiched between the Brachioradialis and Deep Flexor Muscles

Question 7

Where does the Brachioradialis Muscle Originate from?

Answer 7

Proximal Aspect of the Lateral Supercondylar Ridge of the Humerus

Question 8

Where does the Brachioradialis Muscle attach Distally?

Answer 8

Distal End of the Radius, immediately proximal to the Radial Styloid Process

Question 9

What is the function of the Brachioradialis Muscle?

Answer 9

Flexion of the Elbow Joint

Question 10

What is the innervation of the Brachioradialis Muscle?

Answer 10

Radial Nerve

Question 11

What is significant about the Radial Nerve supplying the Brachioradialis Muscle?

Answer 11

Brachioradialis Muscle is the Major Exception to the generalization that:

1. The Radial Nerve supplies only Extensor Muscles
2. All Flexors lie in the Anterior Compartment