Biceps and Triceps Anatomy Questions

The video tutorial provides an in-depth look at the muscles of the arm, focusing on the coracobrachialis, biceps brachii, brachialis, and triceps brachii. Each muscle's origin, insertion, nerve supply, and action are discussed in detail. The coracobrachialis originates from the coracoid process and inserts into the humerus, supplied by the musculocutaneous nerve, and flexes the arm. The biceps brachii has two heads, originates from the coracoid process and supraglenoid tubercle, inserts into the radial tuberosity, and is a strong flexor and supinator. The brachialis originates from the humerus and inserts into the ulna, flexing the forearm. The triceps brachii has three heads, originates from the scapula and humerus, and inserts into the olecranon, extending the elbow. The video concludes with a call to action for viewers to subscribe.

What is the origin of the coracobrachialis muscle?

• Oblique ridge of the humerus

• Infraglenoid tubercle of the scapula

• Supraglenoid tubercle of the scapula

• Tip of the coracoid process of the scapula

Which nerve supplies the coracobrachialis muscle?

• Radial nerve

• Musculocutaneous nerve

• Ulnar nerve

• Median nerve

Where does the long head of the biceps brachii originate?

• Supraglenoid tubercle

• Oblique ridge

• Tip of the coracoid process

• Infraglenoid tubercle

What is the primary action of the biceps brachii?

• Adduction of the arm

• Abduction of the arm

• Flexion of the elbow

• Extension of the elbow

Which bone does the brachialis muscle insert into?

• Ulna

• Scapula

• Humerus

• Radius

What is the main action of the brachialis muscle?

• Rotation of the forearm

• Extension of the forearm at the elbow joint

• Flexion of the forearm at the elbow joint

• Abduction of the arm

How many heads does the triceps brachii have?

• One

• Four

• Two

• Three

Where does the long head of the triceps brachii originate?

• Oblique ridge of the humerus

• Supraglenoid tubercle of the scapula

• Coracoid process of the scapula

• Infraglenoid tubercle of the scapula

Which nerve supplies the triceps brachii muscle?

• Musculocutaneous nerve

• Ulnar nerve

• Radial nerve

• Median nerve

What is the primary action of the triceps brachii?

• Flexion of the elbow

• Extension of the elbow

• Abduction of the arm

• Adduction of the arm