084 The Origin, Insertion, and Action of Subclavius

Leslie Samuel introduces the subclavius muscle, discussing its origin, insertion, and action. The muscle originates at the first rib and coastal cartilage junction, inserts on the clavicle's subclavian groove, and depresses the clavicle when contracted. The video concludes with a review and encourages viewers to visit interactive-biology.com for more resources.

Which rib is the origin point of the subclavius muscle?

• Fourth rib

• First rib

• Second rib

• Third rib

The subclavius muscle is smaller than which of the following muscles?

• Latissimus dorsi

• Deltoid

• Trapezius

• Pectoralis major

Where does the subclavius muscle insert on the clavicle?

• Acromion process

• Subclavian groove

• Coracoid process

• Sternal end

What does the term 'subclavius' refer to?

• Inside the clavicle

• Above the clavicle

• Beneath the clavicle

• Beside the clavicle

What is the primary action of the subclavius muscle when it contracts?

• Retracts the clavicle

• Elevates the clavicle

• Rotates the clavicle

• Depresses the clavicle