Muscle Anatomy Flashcards
What is the insertion point of the Pectoralis Major?
The insertion point of the Pectoralis Major is the humerus.
What are the primary actions of the Pectoralis Major?
The primary actions of the Pectoralis Major include flexion, adduction, and internal rotation of the shoulder joint.
How is the Pectoralis Major innervated?
The Pectoralis Major is innervated by the lateral and medial pectoral nerves.
What is the origin of the Pectoralis Minor?
The Pectoralis Minor muscle originates from the 3rd, 4th, and 5th ribs.
What is the insertion point of the Pectoralis Minor?
The insertion point of the Pectoralis Minor is the coracoid process of the scapula.
What actions are performed by the Pectoralis Minor?
The Pectoralis Minor performs protraction of the scapula and elevates the ribs.
How is the Pectoralis Minor innervated?
The Pectoralis Minor is innervated by the medial pectoral nerve.
Describe the long head origin of the Biceps Brachii muscle.
The Biceps Brachii muscle has two origins: the long head originates from the supraglenoid tubercle of the scapula.
What is the insertion point of the Biceps Brachii?
The insertion point of the Biceps Brachii is the radius.
Define the actions of the Biceps Brachii muscle.
The Biceps Brachii muscle is responsible for flexion of the shoulder joint, flexion of the elbow joint, and supination of the radio-ulnar joints.
How is the Biceps Brachii innervated?
The Biceps Brachii is innervated by the musculocutaneous nerve.
Describe the origin of the Deltoid muscle.
The Deltoid muscle originates from the clavicle, acromion, and spine of the scapula.
What is the insertion point of the Deltoid?
The insertion point of the Deltoid is the deltoid tuberosity of the humerus.
Define the primary action of the Deltoid muscle.
The primary action of the Deltoid muscle is abduction of the shoulder joint.
How is the Deltoid innervated?
The Deltoid is innervated by the axillary nerve.
Describe the origin of the Serratus Anterior muscle.
The Serratus Anterior muscle originates from the upper 8 or 9 ribs.
What is the insertion point of the Serratus Anterior?
The insertion point of the Serratus Anterior is the scapula.
Define the actions of the Serratus Anterior muscle.
The Serratus Anterior muscle performs protraction of the scapula and holds the scapula flat against the thoracic cage.
How is the Serratus Anterior innervated?
The Serratus Anterior is innervated by the long thoracic nerve.
Origin of short head of biceps brachii
short head originates from the coracoid process of the scapula
