Criteria used to name the muscle, transverse abdomis was
1. Direction of the muscle fibers
2. Relative size of the muscle to the muscles around it
3. Location of the muscle
4. Number of origins
5. Location of the muscle's origin and insertion
6. Shape of the muscle
7. Action of the muscle
Pectoralis major, deltoid, triceps brachii, coracobrachialis, serratus anterior, external and internal obliques, rectus abdominis and the transverse abdominis are all used in push ups. The pectoralis major and the triceps are the prime movers.
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A plank primarily engages the back, shoulder, and abdominal muscles. Most notably, these include the erector spinae, rectus abdominis, transverse abdominus, trapezius, pectorals, and deltoids.
Side crunches primarily target the oblique muscles, specifically the internal and external obliques, which are responsible for lateral flexion and rotation of the torso. Additionally, the rectus abdominis and the transverse abdominis may also be engaged to stabilize the core during the movement. This exercise helps strengthen and tone the sides of the abdomen.
The main abdominal muscle groups are the rectus abdominis, obliques, and transverse abdominis. To effectively target these muscles, exercises like crunches, planks, Russian twists, and leg raises can be used. It's important to perform a variety of exercises that engage all these muscle groups to strengthen and tone the entire abdominal area.
The abdominal muscles called rectus abdominis are the ones that work hard to enable you to flex your abdomen when doing sit-ups. Other muscles used while doing sit-ups are the external oblique's, tensor fasciae latae and rectus femora's.
Rectus abdominis.
Rectus Abdominis
Rectal Abdominis
Swivel hips on a trampoline primarily engage the core muscles, including the rectus abdominis, obliques, and transverse abdominis, which help stabilize the torso during movement. Additionally, the hip flexors, glutes, and the muscles of the lower back play a role in facilitating the twisting motion. Leg muscles, such as the quadriceps and hamstrings, also contribute to the overall jumping and pivoting action necessary for this maneuver.
I would say that the rectus abdominis would be the main muscle associated with trunk flexion, but the external and internal obliques also perform trunk flexion.
The system used for naming compounds is called nomenclature. It provides rules and guidelines for naming chemical substances based on their chemical composition and structure. This naming system helps ensure clarity and consistency in identifying and communicating about different compounds.