Brachial (Anterior&Posterior) Muscles
Pronation of Elbow Joint:
*"Flexors"* Anterior Antebrachial Muscles
Brachial Muscles:
*Anterior Brachial Compartment Muscles*: 1. Coracobrachialis Muscle 2. Brachialis Muscle 3. Biceps Brachii Muscle *Posterior Brachial Compartment Muscles*: 1. Triceps Brachii Muscle
Flexion of Shoulder:
*Coracobrachialis* *Biceps Brachii* Pectoralis Major
Adduction (Retraction) of Shoulder:
*Coracobrachialis* Pectoralis Major Teres Major Latissimus Dorsi
Extension of Shoulder:
*Triceps Brachii* Teres Major Latissimus Dorsi
Which two *types* of joints combined comprise the Elbow Joint?
A hinge joint and a pivot joint.
To stretch the Triceps Brachii, I would ________ the Shoulder and ________ the Elbow. A. Flex and flex B. Flex and extend C. Extend and flex D. Extend and extend
A. Flex and flex
Which muscle retracts, or adducts the Scapula? A. Rhomboideus Major B. Pectoralis Minor C. Infraspinatus D. Serratus Anterior
A. Rhomboideus Major
Choose the muscle that extends the Elbow: A. Triceps Brachii B. Brachialis C. Pectoralis Major D. Coracobrachialis
A. Triceps Brachii
Which muscles form the Axillary Walls?
Anterior Wall- Pectoralis Major/Minor, Subclavius Medial Wall- Serratus Anterior Lateral Wall- Coracobrachialis, Biceps Brachii Posterior Wall- Subscapularis, Teres Major, Latissimus Dorsi, Triceps Brachii
Radial Collateral Ligament:
Attaches on the Lateral Epicondyle of the Humerus near its bottom margin and prevents medial flexion and lateral translation (adduction).
Which muscle of the Brachium crosses (3) joints?
Biceps Brachii
Which muscle of the brachial region does *not* attach to the humerus?
Biceps Brachii
Which muscles (3) attach to the Coracoid Process of the Scapula?
Biceps Brachii Coracobrachialis Pectoralis Minor
Supination of Elbow Joint:
Biceps Brachii Muscle *"Extensors"* Posterior Antebrachial Muscles
Which muscle of the brachium attaches to the Ulna?
Brachialis
Which muscles of the brachium attach to the Ulna?
Brachialis Triceps Brachii
Flexion of Elbow Joint:
Brachialis Muscle Biceps Brachii Muscle
Choose the muscle that *does not* attach to the Intertubercular Groove of the Humerus: A. Pectoralis Major B. Teres Major C. Biceps Brachii D. Latissimus Dorsi
C. Biceps Brachii
Choose the muscle that crosses (3) joints: A. Triceps Brachii B. Brachialis C. Biceps Brachii D. Coroacobrachialis
C. Biceps Brachii
Which muscle adducts the shoulder? A. Deltoid B. Pectoralis Minor C. Pectoralis Major D. Coracobrachialis
C. Pectoralis Major
All of the following muscles attach to the Clavicle *except* the: A. Pectoralis Major B. Trapezius C. Pectoralis Minor D. Deltoid
C. Pectoralis Minor
All of the following muscles attach to the Coracoid Process *except* the: A. Biceps Brachii B. Pectoralis Minor C. Subscapularis D. Coracobrachialis
C. Subscapularis
Which landmark of the Humerus articulates with the Head of the Radius?
Capitulum
Articulations of the Humeroradial Joint:
Capitulum of the Humerus with the proximal end of the Head of the Radius.
Which muscle of the brachium adducts the shoulder?
Coracobrachialis
Choose the muscle that *both* flexes and extends the Shoulder: A. Teres Major B. Trapezius C. Latissimus Dorsi D. Deltoid
D. Deltoid
Which muscle forms the medial wall of the Axilla? A. Pectoralis Major B. Brachialis C. Coracobrachialis D. Serratus Anterior
D. Serratus Anterior
Which muscles can flex and extend the shoulder?
Deltoid
Movements of Elbow Joint:
Flexion Extension Supination Pronation
Coracobrachialis Muscle
O- Coracoid Process of Scapula I- Mid-Humeral Shaft F- Flexion, Adduction of Shoulder Superficial to Latissimus Dorsi and Teres Major insertion. Deep to Pectoralis Major insertion, Biceps Brachii and Deltoid. Superficial to Brachial Plexus nerves. Passes by Axilla *use caution*. *Stretch- Extend and abduct Shoulder*.
Biceps Brachii Muscle
O- Coracoid Process of Scapula (short head) -Supraglenoid Tubercle of Scapula (long head) I- Radial Tuberosity F- Flexion of Shoulder and Elbow -Supination of Antebrachium (Radio-Ulnar joint) Does not attach to Humerus, 2 Headed muscle, Crosses 3 joints. Superficial to Coracobrachialis and Brachialis. *Stretch- Extend Shoulder and Elbow while pronating Antebrachium*.
Brachialis Muscle
O- Distal 1/2 of Anterior Humeral Shaft I- Coranoid Process and Ulnar Tuberosity of Ulna F- Flexion of Elbow (Humeral Ulnar joint) Deep to Biceps Brachii. *Stretch- Extend Elbow*.
Triceps Brachii Muscle
O- Infraglenoid Tubercle of Scapula (long head) -Upper posterior shaft of Humerus (lateral head) -Distal shaft of Humerus (short head) I- Olecranon Fossa of Ulna F- Extension of Shoulder and Elbow, Stabilizes Shoulder 3 Headed muscle, long head passes superficial to Teres Major and deep to Teres Minor. *Stretch- Flex Shoulder and Elbow*.
Which (3) muscles attach to the Intertubercular Groove of the Humerus?
Pectoralis Major Latissimus Dorsi Teres Major
Articulations of the Proximal Radio-Ulnar Joint:
Radial Notch of the Ulna with the Head of the Radius.
What movements does the Biceps Brachii create at each of the (3) joints it crosses?
Shoulder Joint-Flexion Elbow Joint- Flexion Radio-Ulnar Joint- Supination
Which (3) joints does the Biceps Brachii cross?
Shoulder, Elbow and Radio-Ulnar joints.
Ulnar Collateral Ligament:
Spans the medial side of the Elbow joint and prevents lateral flexion and medial translation (abduction).
Annular Ligament:
Surrounds the Head of the Radius and anchors it into the Radial Notch of the Ulna. It anchors and stabilizes the Proximal Radioulnar joint.
The hinge joint of the Elbow is comprised of?
The Humero-Ulnar joint and Humeroradial joint. Together they control flexion and extension.
The pivot joint of the Elbow is comprised of?
The Proximal Radioulnar joint which provides actions for supination and pronation.
Stabilization of Shoulder:
Triceps Brachii
Extension of Elbow Joint:
Triceps Brachii Muscle
Which muscle extends the Elbow? Where does it insert?
Triceps Brachii muscle inserts at the Olecranon Fossa of the Ulna.
Articulations of the Humero-Ulnar joint:
Trochlea of the Humerus with the Trochlear Notch of the Ulna.