ANTERIOR muscles of ELBOW and FOREARM
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
