Types of Muscles. In the human body, there are three types of muscle tissue: ... The back, chest, arms, legs, calves, and shoulders make up the six main muscle groups.

Lats extend to the midpoint of your upper arm bone (humerus), making the lat muscle one of the largest in the human body. Lat muscles play a role when you move your arm and use your arm to move ...

When your biceps muscle in your upper arm contracts, it pulls your lower arm in towards your shoulder. However, when it relaxes, your biceps cannot push your arm back out.

The best arm exercises with dumbbells, resistance bands and bodyweight for an upper body workout to tone your triceps, biceps and shoulders.

1. Push-up. Why it rocks: Both Carnation and Lampa put this upper-body staple at the top of the list. Push-ups hit all the major arm muscles while helping you target the chest and shoulder girdle ...