In general, the agonist and antagonist muscles of some body segment act simultaneously during human motion. For example, the rectus abdominis usually acts as an antagonist muscle to the erector spinae that acts as an agonist muscle during trunk expansion.
What is antagonist to rectus abdominis?
The rectus abdominis, external oblique, and transversus abdominis all flex the back, making them antagonists to the back extensor muscles. Only those three abdominal muscles form the antagonist group for the back extension, leaving out the fourth abdominal muscle: the internal abdominal oblique.
What are antagonistic pairs abdominals?
Some fixators also assist the agonist and act as a synergist . The trapezius muscle can act as a fixator when the biceps is flexing the elbow joint. The abdominals can act as fixators to stabilise the body for hip and knee movements.
Antagonistic muscle pairs.
|Pectoralis major||Latissimus dorsi|
What are the antagonist muscles?
Antagonistic Muscle is a muscle that opposes the action of another. For example, when the triceps oppose the contraction of the flexing biceps by relaxing, the triceps would be regarded as the antagonistic muscle to the biceps whereas the biceps, the agonist muscle.
What are antagonist muscles of the obliques?
Bilaterally, the antagonists to the function of the obliques are the Trunk extensors, mainly the erector spinae. Unilaterally, the obiliques are opposed by the oblique muscle pair of the opposite side, contralateral (opposite) Transverse Abdominis, and the contralateral Quadratus Lumborum (QL).
What muscle is the antagonist to the iliopsoas?
|Actions||Flexion of hip|
|Antagonist||Gluteus maximus and the posterior compartment of thigh|
What muscle is the antagonist to the gluteus medius?
hip adductor muscles
The hip adductor muscles are the antagonists to the glutues medius. Hip abduction involves the contraction of the gluteus medius, causing a smooth lateral abduction of the lower extremity away from the body.
Is rectus abdominis an antagonist or agonist?
Since the transversus abdominis, external oblique, and rectus abdominis flex your back, they are antagonists to your back extensor muscles. Only the above three abdominal muscles make up the antagonist group for your back extension.
Which muscle is the antagonist to the infraspinatus?
The infraspinatus: agonistic: anterior deltoid, latissimus dorsi, lower trapezius, pectoralis major, pectoralis minor, serratus anterior, teres minor. antagonistic: middle deltoid, middle trapezius, posterior deltoid.
What are antagonistic muscles Class 9?
Antagonistic muscles are those muscles which produce movements in an antagonistic pair of muscles by opposing the movement of the agonistic muscle . i.e. when one contacts the other relaxes and vice versa. Example- biceps and triceps, quadriceps and hamstrings.
Which muscle is the antagonist to the gastrocnemius?
Tibialis anterior muscle
|Actions||plantar flexes foot, flexes knee|
|Antagonist||Tibialis anterior muscle|
What muscle is the antagonist to the latissimus dorsi?
Latissimus dorsi muscle
|Antagonist||Deltoid and trapezius muscle|
|Latin||Musculus latissimus dorsi|
What exercise works the rectus abdominis?
The bicycle crunch is one of the best exercises for targeting both your rectus abdominis muscle and your obliques — the muscles on the sides of your core.
What type of muscle is rectus abdominis?
Rectus abdominis, informally known as the abs muscle, is a long muscle of the anterior abdominal wall. In those with low body fat, it is clearly visible beneath the skin forming the ‘six pack’.
Rectus abdominis muscle.
|Origin||Pubic symphysis, pubic crest|
|Function||Trunk flexion, compresses abdominal viscera, expiration|
What does the rectus abdominis muscle do?
The main function of the rectus abdominis is to move the body between the ribcage and the pelvis. external oblique muscles – these are on each side of the rectus abdominis. The external oblique muscles allow the trunk to twist, but to the opposite side of whichever external oblique is contracting.
Where is the rectus abdominis muscle located?
Rectus abdominis: This pair of muscles goes down the middle of your abdomen from your ribs to the front of your pelvis. The muscles hold your internal organs in place and keep your body stable during movement.
How many muscles are in the rectus abdominis?
Introduction. The Rectus Abdominis makes up the top layer of your abdominal muscles, commonly referred to as your “six-pack.” It is two flat and parallel muscles separated by linea alba (a connective tissue).
What are the 4 main abdominal muscles?
Muscles of the Abdomen
These muscles of the anterolateral abdominal wall can be divided into four groups: the external obliques, the internal obliques, the transversus abdominis, and the rectus abdominis (Figure 16.16 and Table 16.6).