Pectoral Girdle and Arm Flashcards

Flashcards for the Pectoral Girdle and Arm Lecture

What three main sections are covered in Lab 5 regarding the pectoral girdle and arm?

Bones of the Pectoral Girdle and Arm, Muscles that Move the Pectoral Girdle and Arm, Muscles that Move the Forearm.

What two bones make up the pectoral girdle?

Clavicle and Scapula

Name the end of the clavicle that is most distal.

Acromial end

What process is posterior on the scapula?

Acromion process and scapular spine

What cavity is on the lateral side of the scapula?

Glenoid Cavity

With what does the distal end of the clavicle articulate?

Acromion process of the scapula.

The head of the humerus articulates with what structure of the scapula?

Glenoid cavity

Which is larger, the medial or lateral epicondyle of the humerus?

The medial epicondyle

Name three muscles that move the pectoral girdle.

Pectoralis minor, Rhomboids, and Trapezius

What are the actions of the trapezius muscle?

Retracts, elevates, depresses scapulae; extends head

What are the actions of the rhomboids?

Retract and stabilize scapula

Name the origin and insertion of the pectoralis minor.

Origin: Ribs, Insertion: Coracoid process (scapula)

Name five muscles that act on the arm.

Deltoid, Teres minor, Teres major, Latissimus dorsi, Pectoralis major

Name 2 actions of the teres major muscle.

Extends and medially rotates arm

What are the actions of the latissimus dorsi?

Adducts, extends, medially rotates arm

Name the Origin and insertion of the latissimus dorsi.

Origin: Vertebral column, Insertion: Humerus

Name the origin and insertion of the deltoid.

Origin: Clavicle and scapula, Insertion: Deltoid tuberosity (humerus)

What are the actions of the deltoid?

Abducts, flexes, extends arm

Name the origin and insertion of the pectoralis major.

Origin: Clavicle and sternum, Insertion: Humerus

What are the actions of the pectoralis major?

Adducts and flexes arm

Name the origin and insertion of the biceps brachii.

Insertion: Radial tuberosity

Name the two actions of the biceps brachii.

Flexes and supinates forearm

What is the action of the triceps brachii?

Extends forearm

What is the insertion of the triceps brachii?

Olecranon process of ulna

What is the action of the brachioradialis?

Flexes forearm

What is the insertion of the brachioradialis?

Radius

What is the action of the supinator?

Supinates forearm

What is the action of the pronator teres?

Pronates forearm