The Muscles Groups_Part 1

 

Trapesiuz  [truh·pee·zee·uhs] n. either of a pair of large triangular muscles extending over the back of the neck and shoulders and moving the head and shoulder blade.

Gym term: Traps

The trapezius starts right below the skull, runs down the neck and across the shoulders, and then continues down the spine in a “V” shape.

The trapezius works to stabilize your shoulders and upper back. Bodybuilding may not be for you, but to maintain good posture and avoid back pain, it’s important to keep the trapezius strong(1).

 

Deltoid [del·toyd] n. is a large, triangular muscle covering the joint of the shoulder, the action of which raises the arm away from the side of the body.

Gym term: Delts (Shoulder)

The deltoid muscle is a muscle that is shaped like an inverted triangle at the shoulder area (it gives your shoulder a round appearance). Unlike other muscles that usually produce one type of movement, the deltoid, due to its shape and direction of its muscle fibers is responsible for several actions of the arm:

deltoids

Anterior (Clavicular) Deltoid = flexes and medially rotates the arm

Middle (Acromial) Deltoid = abducts the arm beyond the initial 15 degrees done by the supraspinatus

Posterior (Spinal) Deltoid = extends and laterally rotates the arm

Pectoral [pek·taw·ruhl] n. relating to a pectoral muscle, which relates to the chest, breast, or thorax.

Gym term: Pecs (Chest)

The Pectoralis muscle is any of the muscles that connect the front walls of the chest with the bones of the upper arm and shoulder. There are two such muscles on each side of the sternum (breastbone) in the human body: pectoralis major and pectoralis minor.

Comprehension Questions
What is referred to as Traps? Where is it located?
What does the trapezius do?
Which part of the body is the deltoid? What is it responsible for?
Where is the pectoral part of the body? What does it connect?

Sources:

(1) https://www.healthline.com/health/trapezius-trigger-points#about

(2) https://socratic.org/questions/what-is-the-action-of-the-deltoid-muscle

(3) https://www.britannica.com/science/pectoralis-muscle

(4) https://sportsclinicnq.com.au/pectoralis-major-strain

(5) https://www.thehealthsite.com/fitness/the-massive-muscle-anatomy-and-body-building-guide-you-always-wanted-100583/