Best answer: Which muscle is the agonist for sitting up?

1. Rectus Abdominis. The rectus abdominis is the wall of abdominal muscle that connects to the lower rib cage and to the hips. When built up so that it bulges against its crossing tendons, it creates the six-pack effect.

Are quadriceps agonist or antagonist?

The hamstrings are the agonist and the quadriceps are the antagonist. In the contact and recovery phase, the quadriceps contract to extend the knee while the hamstrings lengthen to allow the movement.

What muscle is a powerful agonist of arm flexion?

In order of decreasing strength, these are the brachialis, biceps brachii, and brachioradialis. Biceps brachii. The biceps brachii is the most familiar muscle of the arm because it bulges when the elbow is flexed; this muscle is the powerful prime mover for flexion of the forearm and acts to supinate the forearm.

Which muscle is an antagonist to the gastrocnemius muscle quizlet?

The soleus is an antagonist of the gastrocnemius during plantar flexion. The sternocleidomastoid muscle inserts on the ________.

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Which muscles are agonist and antagonist?

The muscle that is contracting is called the agonist and the muscle that is relaxing or lengthening is called the antagonist.

Antagonistic muscle pairs.

Joint Shoulder
Antagonistic pair Latissimus dorsi; deltoid
Movements produced Adduction; abduction
Sport example Golf swing; breaststroke arms

What is the agonist muscle in knee flexion?

Movement = starts off with knee flexion which is bending your knees. Hamstrings contract being your agonist, and your quadriceps relax being the antagonist.

Is the tricep an agonist?

Image waving at your best friend: when your hand is moving away from you, your triceps is an agonist, contracting to extend your arm. Your biceps is an antagonist, relaxing to allow elongation while possibly contracting ever-so-lightly to control the speed of that moving forearm.

What is the agonist in hip flexion?

For example, the agonist, or prime mover, for hip flexion would be the iliopsoas. Although it does not work alone, iliopsoas does more of the work in hip flexion than the other muscles that assist in that action.

What is the agonist muscle in shoulder adduction?

Agonist is deltoid, antagonist is the latissimus dorsi. As the muscles contract across the shoulder joint it brings your shoulder upward into flexion as you push the ball the opposite happens and the antagonist becomes your deltoid and the latissimus dorsi becomes your agonist.

What is the strongest muscle in the body quizlet?

Terms in this set (5)

  • Gluteus Maximus. Physically strongest.
  • Tongue. Digests food, form words, and keep germs out, never stops.
  • External Muscles of the Eye. Always fixates on exact point brain tells them to.
  • Masseter. Proportionally strongest.
  • Soleus.
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What are the main muscles of dorsiflexion?

The tibialis anterior muscle, found in the anterior compartment of the leg, is the primary muscle that facilitates dorsiflexion of the ankle joint. The peroneus longus and Peroneus Brevis muscles, found in the lateral compartment of the leg, function to facilitate eversion of the ankle joint.

What muscle is the antagonist of the Sartorius muscle?

The antagonists to these muscles belong to the quadriceps muscle group, comprised of the rectus femoris, vastus medialis, vastus lateralis, and vastus intermedius, all of which act to extend the knee.

What are the antagonist muscles?

Antagonist muscles are simply the muscles that produce an opposing joint torque to the agonist muscles. This torque can aid in controlling a motion. The opposing torque can slow movement down – especially in the case of a ballistic movement.

Which muscle is the antagonist to the adductor longus?

Agonists: Adductor group – Pectineus, Adductor Brevis, Adductor Longus, Gracilis, Adductor Magnus. Antagonists: Gluteus Minimus, Gluteus Maximus, Gluteus Medius, TFL.