Muscle and Joint Anatomy Assessment

The video tutorial provides an in-depth look at the anatomy of the arm, focusing on the humerus bone, the glenohumeral joint, and the shoulder's structure. It explains the mobility provided by the shallow glenoid cavity and the round head of the humerus. The tutorial also covers the deltoid muscle's role and its connection to the humerus, as well as the anatomy of the elbow joint, including the medial and lateral epicondyles and the olecranon. The video emphasizes the importance of understanding these structures for comprehending arm movement and function.

What is the primary bone in the arm that extends from the shoulder to the elbow?

• Scapula

• Ulna

• Radius

• Humerus

Why does the glenohumeral joint have a shallow cavity and a round head?

• To support more weight

• To provide stability

• To allow for greater mobility

• To reduce friction

Which part of the shoulder is most visible in individuals with less muscle mass?

• Acromial end of the clavicle

• Deltoid tuberosity

• Coracoid process

• Glenoid cavity

What creates the roundness in the shoulder area?

• Deltoid muscle

• Coracoid process

• Head of the humerus

• Acromion process

Where does the deltoid muscle insert on the humerus?

• Greater tubercle

• Lesser tubercle

• Deltoid tuberosity

• Medial epicondyle

Which muscle is primarily responsible for the bulk of the shoulder?

• Biceps brachii

• Triceps brachii

• Deltoid muscle

• Pectoralis major

What is the name of the bony prominence that sticks out on the medial side of the elbow?

• Medial epicondyle

• Lateral epicondyle

• Olecranon

• Radial head

Which two muscles are associated with the lateral epicondyle of the elbow?

• Flexor carpi ulnaris and palmaris longus

• Deltoid and pectoralis major

• Brachioradialis and extensor carpi radialis longus

• Biceps brachii and triceps brachii

How does the length of the arm change when the elbow is bent?

• The arm becomes longer

• The arm remains the same length

• The arm becomes wider

• The arm becomes shorter

What prevents the elbow from moving backward when straightened?

• Coronoid process

• Medial epicondyle

• Lateral epicondyle

• Olecranon fossa