Platysma

The video tutorial explores the platysma muscle, detailing its anatomy, function, and role in facial expressions. It highlights the muscle's superficial nature, its attachment to the skin, and its significance in human social behavior. The tutorial also discusses the platysma's function in animals, particularly in horses, and explains its innervation by the facial nerve. Damage to the platysma can lead to facial paralysis.

What is the primary role of the platysma muscle in humans?

• To aid in breathing

• To change facial expressions

• To assist in chewing

• To support the neck

How does the platysma muscle change with age?

• It becomes more superficial

• It strengthens over time

• It forms elongated folds on the neck

• It becomes more elastic

In animals, what is a significant function of the platysma muscle?

• To scare away insects

• To help in flying

• To improve hearing

• To aid in digestion

Which nerve is responsible for the innervation of the platysma muscle?

• Vagus nerve

• Hypoglossal nerve

• Trigeminal nerve

• Facial nerve

What can result from damage to the platysma muscle?

• Paralysis on the face

• Improved facial expressions

• Enhanced skin elasticity

• Increased neck strength