Elbow and Forearm Practice Textbook Quiz - Chapter 4, Biomechanics

Which of the following anterior muscles is involved in supination of the forearm?

• pronator teres

• brachioradialis

• biceps brachii

• brachialis

Biceps brachii

Which of the following muscles assists the triceps brachii in extension of the elbow joint?

• extensor digitorum

• extensor carpi radialis

• anconeus

• supinator

anconeus

The relationship between the ulnar (medial) styloid process and the radial (lateral) styloid process is such that the radial styloid process is more…

• proximal

• distal

• anterior

• posterior

Distal

The ligament running between the shafts of the ulna and radius is known as the…

• ulnar collateral ligament

• radial collateral ligament

• annular ligament

• interosseous ligament (membrane)

interosseous ligament (membrane)

The radial head rotates on what aspect of the humerus?

• coronoid fossa

• capitulum

• olecranon fossa

• radial tubercle

capitulum

The structures known as the supracondylar ridges are located where in anatomical relation to the epicondyles?

• proximal to the epicondyles

• distal to the epicondyles

• lateral to the epicondyles

• medial to the epicondyles

proximal to the epicondyles

Of the following muscles involved in pronation-supination of the forearm, which crosses the elbow joint?

• supinator

• biceps brachii

• pronator teres

• pronator quadratus

pronator teres

The lateral collateral ligament of the elbow joint is also known as the…

• ulnar collateral ligament

• radial collateral ligament

• annular ligament

• interosseous ligament (membrane)

radial collateral ligament

The olecranon process of the elbow joint is located on the posterior aspect of the…

• distal humerus

• proximal humerus

• proximal radius

• proximal ulna

proximal ulna

The medial collateral ligament of the elbow joint is also known as the…

• ulnar collateral ligament

• radial collateral ligament

• annular ligament

• interosseous ligament (membrane)

ulnar collateral ligament

The pronator-flexor group of forearm muscles originates on the…

• lateral humeral epicondyle

• coronoid process

• medial humeral epicondyle

• olecranon process

medial humeral epicondyle

The supinator-extensor group of forearm muscles originates on the…

• lateral humeral epicondyle

• coronoid process

• medial humeral epicondyle

• olecranon process

lateral humeral epicondyle

Where is the olecranon process found?

posterior side of distal end of humerus

What is the ligament that holds the radial head to the ulna?

annular ligament

The coronoid process of the elbow joint is located on the anterior aspect of the…

trochlear notch/ulna

What is the function of the brachialis muscle?

flexion of elbow joint

What is the spool-like structure on the distal end of the humerus?

Trochlea

When the elbow joint is held in full extension, the olecranon process and the epicondyles form what?

a straight line

From the anatomical position, internal rotation of the forearm is called what?

pronation

What is the muscle that is chiefly responsible for extension of the elbow joint?

triceps brachii

A muscle found just proximal of the wrist that helps in the action of turning the forearm and the palm of the hand downwards is the…

pronator quadratus