ANTERIOR muscles of ELBOW and FOREARM

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What are the Anterior Muscles of the Elbow and Forearm (5 total)

1. Biceps Brachii 2. Brachialis 3. Brachioradialis 4. Pronator Teres 5. Pronator Quadratus

Which two elbow flexors are humeral RADIAL muscles

1. Biceps Brachii 2. Brachioradialis

What is the action of the Biceps Brachii?

1. Elbow Flexion 2. Forearm supination (Duh. like curls)

What is the action of the Brachioradialis?

1. Elbow Flexion 2. Reduction of pronation and supination

This is the VERY POWERFUL elbow flexor

Brachialis (elbow flexion is the sole concern of this muscle)

This is your "hammering muscle" keeping your forearm in a MIDLINE hold

Brachioradialis

WHICH flexor is an ACCESSORY muscle to the pronators and supinators

Brachioradialis

Which muscle pulls you in line with the supracondylar ridge?

Brachioradialis

T/F The BRACHIALIS LIFT the humerus up into the glenoid cavity without lifting the arm

FALSE (BICEPS brachii)

T/F the pronator QUADRATUS is an EMERGENCY assist muscle on the elbow

FALSE (pronator TERES. however, it will pronate before it assists in flexing)

What type of muscle is the pronator teres? (fusiform or penniform?)

FUSIFORM (lying diagonally across elbow)

What is the difference between humeral ULNAR and humeral RADIAL muscles

Humeral ULNAR muscles do NOT act on the forearm

T/F the Pronator Quadratus is a PENNIFORM muscle

True (more for stabilization)

Action of Pronator Quadratus

1. Pronation

Action of pronator TERES

1. Pronation 2. Elbow Extension (emergency assist)

Which two muscles act SOLEY on the RADIOULNAR joint

1. Pronator teres (but is an emergency assist on the elbow) 2. Pronator quadratus

Biceps Brachii = BLANK BLANK muscle Brachialis = BLANK BLANK muscle Brachioradialis = BLANK BLANK muscle

Biceps Brachii = humeral RADIAL muscle Brachialis = Humeral ULNAR muscle Brachioradialis = Humeral RADIAL muscle

All muscles that act on the forearm originate on the BLANK and insert on the BLANK

Originate = ULNA Instert = RADIUS

Of the pronators BLANK is more for MOBILIZATION while BLANK is more for STABLIZATION

Pron TERES - Mobilization Pron QUADRATUS = Stablization

The Biceps Brachii is a multijoint muscle that acts on BLANK joints (how many?)

THREE (1. Glenohumeral = shunt 2. humeroradial 3. Radioulnar)

T/F Humeral ULNAR muscles ONLY produce flexion and extension

TRUE

T/F the Pronator TERES is the MAIN pronator

TRUE

T/F The 3 "b's" are the FLEXORS of the arm

TRUE (1. Biceps Brachii 2. Brachialis 3. Brachioradialis)

T/F the BICEPS BRACHII acts as a SHUNT muscle on the GLENOHUMERAL joint

TRUE (during humeral FLEXION and HORZ ADDUCTION)

T/F the Brachioradialis will NOT move you to FULL pronation OR supination. It will JUST pull you to midline

TRUE (that is why is is your "hammering midline muscle"

T/F Humeral ULNAR muscles do NOT act on the forearm

True


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