Cats have three muscles together that correspond to the human deltoid muscle. The muscles are the clavodeltoid, spinodeltoid, and the acromiodeltoid.
Humans have a single large trapezius muscle, but the cat has three sperate muscles- the clavotrapezius, acroliotrapezius, and spinotrapezius- that together perdorm a similar function.
A number of muscles are involved in shrugging your shoulders, including the latissiumus dorsi, the deltoids, the rhomboids, the scapular muscles, the biceps, the triceps, among others. The primary muscle is the upper trapezius muscle. The secondary muscles are the middle trapezius muscles and the levator scapulae.
nuchal ligament, occipital protuberance, spinous process C7-T3
scalene muscles
The trapezius is an upper back/neck muscle and the deltoids are shoulder muscles
Shrugs flex the trapezius muscles.
Humans have one large single trapezius muscle, but the pig has three separate muscles: the clavotrapezius, the acromiotrapezius, and the spinotrapezius.
The trapezius raises scapulaas when shrugging shoulders, and pulls head backwards.
Trapezius Muscles (upper back)
The most important flight muscles are the pectorals, which correspond to the muscles of your chest :)
The main purpose of the trapezius muscle if to stabilize the shoulder blade (scapula); provide a base for the movements of the arm, and to create the shoulder girdle for stability to the upper body.