The pectoralis muscle.
Subscapularis muscle
lateral rotation of humerus (upper arm)
infraspinatus muscle
the answer isD. Infraspinatus
Infraspinatus.
is a muscle in the rotator cuff that assists the moving of the shoulder
When one muscle pulls, the other muscle relaxes.
for biceps it is triceps
The supraspinatus muscle contains mostly type I (slow-twitch) muscle fibers, which are more fatigue-resistant and used for sustained contractions. The infraspinatus muscle contains a mix of type I and type II (fast-twitch) muscle fibers, which are used for more powerful and quick contractions.
antagonistic muscles
because you suck
Heart muscle, or cardiac muscle, is not described as an antagonistic muscle because it functions differently from skeletal muscles, which work in pairs to create movement. Instead of opposing actions, cardiac muscle fibers contract rhythmically and simultaneously to pump blood throughout the body. This coordinated contraction is essential for maintaining a consistent heartbeat, ensuring efficient blood circulation without the need for antagonistic pairs.