Kinesiology - Chapter 6

In the anatomical position, the radius is more medial than the ulna.

False

The olecranon process is located on the medial aspect of the ulna.

False

Which of the following is a posterior muscle? 1. The anconeus muscle 2. The biceps brachii muscle 3. The pronator quadratus muscle 4. The pronator teres muscle

The anconeus muscle

Which of the following muscles is involved in both pronation and supination? 1. The biceps brachialis muscle 2. The brachialis muscle 3. The brachioradialis muscle 4. The supinator muscle

The brachioradialis muscle

Which of the following is an anteromedial muscle? 1. The anconeus muscle 2. The pronator teres muscle 3. The supinator teres muscle 4. The triceps brachii muscle

The pronator teres muscle

Which of the following muscles is best stretched by using a partner to grasp the wrist and passively take the forearm into extreme supination while maintaining full elbow extension? 1. The anconeus muscle 2. The biceps brachii muscle 3. The brachialis muscle 4. The pronator teres muscle

The pronator teres muscle

Which of the following is the sole action of the brachialis muscle? 1. Pronation from a supinated position 2. Supination from a pronated position 3. True flexion of the elbow 4. Weak flexion of the shoulder

True flexion of the elbow

Which of the following is an action of the pronator teres muscle? 1. Weak extension of the elbow 2. 3. Weak pronation from a supinated position 4. Weak supination from a pronated position

Weak flexion of the elbow

The pronator teres muscle originates from the distal part of the medial supracondylar ridge of the humerus and the medial side of the proximal ulna.

Which of the following statements is true about the carrying angle? True

Lateral epicondylitis is a condition that occurs less commonly than medial epicondylitis.

False

The biceps brachii muscle originates from the coracoid process and the supraglenoid tubercle above the superior lip of the glenoid fossa.

True

The distal attachments of the radioulnar joint muscles are located on the radius.

True

The triceps brachii muscle inserts on the olecranon process of the ulna.

True

The ulna is much larger proximally than the radius.

True

The long head of the triceps brachii muscle originates from the: 1. distal two-thirds of the posterior surface of the humerus. 2. infraglenoid tubercle below the inferior lip of the glenoid fossa of the scapula. 3. supraglenoid tubercle above the superior lip of the glenoid fossa of the scapula. 4. upper half of the posterior surface of the humerus.

infraglenoid tubercle below the inferior lip of the glenoid fossa of the scapula.

The pronator teres muscle inserts on the: 1. infraglenoid tubercle below the inferior lip of the glenoid fossa of the scapula. 2. distal two-thirds of the posterior surface of the humerus. 3. middle third of the lateral surface of the radius. 4. upper half of the posterior surface of the humerus.

middle third of the lateral surface of the radius.

The lateral supracondylar ridge is an anatomical landmark located on the radius.

False - located on the ulna

The scapula and the clavicle serve as proximal attachments for the muscles that flex and extend the elbow.

False - scapula and humerus

Which of the following is an action of the biceps brachii muscle? 1. Diagonal abduction of the shoulder joint during internal rotation 2. Horizontal adduction of the shoulder joint 3. Pronation of the forearm from a neutral position to full pronation 4. Pronation of the forearm from a supinated position to neutral

Horizontal adduction of the shoulder joint

Elbow motions primarily involve movement between the articular surfaces of the humerus and the ulna.

True

Even though both radioulnar joints are freely moveable diarthrodial joints, the joint between the shafts of the two bones is referred to as being syndesmosis.

True

Flexion of the forearm with a barbell in the hands, known as "curling," is an excellent exercise to develop the biceps brachii muscle.

True

In the anatomical position, the tuberosity of the radius is in close proximity to the lateral side of the ulna.

True

Medial epicondylitis is frequently referred to as "golfer's elbow."

True

Positioning the forearm in pronation decreases the effectiveness of the biceps brachii muscle. In flexing the elbow.

True

The insertion of the biceps brachii muscle is on the tuberosity of the radius and bicipital aponeurosis.

True

The pronator teres muscle is innervated by the median nerve (C6, C7).

True

The ulnar collateral ligament is critical to providing medial support to prevent the elbow from abducting when stressed in physical activity.

True

The chief function of the _______ is to pull the synovial membrane of the elbow joint out of the way of the advancing olecranon process during extension of the elbow. 1. anconeus muscle 2. pronator teres muscle 3. supinator muscle 4. triceps brachii muscle

anconeus muscle

The elbow includes all of the following ligaments except the: 1. annular ligament. 2. interosseus ligament. 3. radial collateral ligament. 4. ulnar collateral ligament.

interosseus ligament.

The supinator muscle originates from the: 1. lateral epicondyle of the humerus and neighboring posterior part of the radius. 2. lateral epicondyle of the humerus and neighboring posterior part of the ulna. 3. medial epicondyle of the humerus and neighboring posterior part of the radius. 4. medial epicondyle of the humerus and neighboring posterior part of the ulna.

lateral epicondyle of the humerus and neighboring posterior part of the ulna.

The _________ muscle does not perform flexion of the elbow. 1. biceps brachii 2. brachialis 3. brachioradialis 4. pronator quadratus

pronator quadratus

The actions of the brachioradialis muscle include all of the following except: 1. flexion of the elbow. 2. pronation from a supinated position to neutral. 3. supination from a pronated position to neutral. 4. weak flexion of the shoulder joint.

weak flexion of the shoulder joint.

Which of the following is not an action of the brachioradialis muscle? 1. Extension of the elbow 2. Flexion of the elbow 3. Pronation of the forearm from a supinated position to neutral 4. Supination of the forearm from a pronated position to neutral

Extension of the elbow

The elbow joint is a hinge-type joint that allows only internal and external rotation in the sagittal plane.

False - allows only flexion and extension

The insertion of the brachialis muscle is on the coracoid process of the ulna.

False - coranoid

A movement of the forearm away from the shoulder is best described by the term "flexion."

False - extension

Supination refers to an internal rotary movement of the radius on the ulna.

False - external

The insertion of the brachioradialis muscle is on the proximal end of the radius at the styloid process.

False - lateral surface of the distal end of the radius at the styloid process

Which of the following statements is true about the carrying angle? 1. It is slightly greater for men compared with women. 2. It is significantly greater in the nondominant limb than in the dominant limb. 3. It plays a major role when carrying objects. 4. It permits the forearms to clear the pelvis in the swinging movements during walking.

It permits the forearms to clear the pelvis in the swinging movements during walking.

In the context of radioulnar joint movements, which of the following terms refers to the internal rotary movement of the radius on the ulna that results in the hand moving from the palm-up to the palm-down position? 1. Extension 2. Flexion 3. Supination 4. Pronation

Pronation

As the elbow reaches full extension, the olecranon process of the ulna is received by the olecranon fossa of the humerus, and this provides increased joint stability.

True

Radioulnar supination is performed by all of the following muscles except the: 1. anconeus muscle. 2. biceps brachii muscle. 3. brachioradialis muscle. 4. supinator muscle.

anconeus muscle.

Tightening a screw with a screwdriver using the right hand depends significantly upon the action of the _______. 1. biceps brachialis 2. brachioradialis 3. supinator 4. triceps brachii

biceps brachialis

Radioulnar pronation is performed by all of the following muscles except the: 1. brachialis muscle. 2. brachioradialis muscle. 3. pronator quadratus muscle. 4. pronator teres muscle.

brachialis muscle.

The anterior interosseous nerve branching from the median nerve (C6, C7) innervates the _______. 1. brachioradialis muscle 2. pronator quadratus muscle 3. supinator muscle 4. triceps brachii muscle

pronator quadratus muscle

Flexion of the elbow occurs in the _______ plane of motion, and supination of the forearm occurs in the _______ plane of motion. 1. coronal; vertical 2. sagittal; frontal 3. sagittal; transverse 4. vertical; sagittal

sagittal; transverse

The tuberosity of the radius is in its most anterior position when the radioulnar joint is in: 1. extension 2. flexion 3. pronation 4. supination

supination

The posterior interosseous nerve branching from the radial nerve (C6) innervates the _______. 1. biceps brachii muscle 2. brachialis muscle 3. pronator teres muscle 4. supinator muscle

supinator muscle

The radial nerve innervates all of the following muscles except: 1. the anconeus muscle. 2. the brachioradialis muscle. 3. the pronator teres muscle. 4. the triceps brachii muscle.

the pronator teres muscle.