| Question Answer | prime mover for pulling the arm posteriorly latissimus dorsi | elbow extender triceps brachii | help form the abdominal girdle internal obliques, external obliques, transverse abdominal, rectus abdonminal | extends and adducts wrist extensor carpi radialis |
|---|
What muscle is the prime mover of the arm?
Prime mover or agonist: principal muscle that performs action. For example,
biceps brachii
is the prime mover, the brachialis is a synergistic muscle for that action. Synergists: act together. For example, the biceps brachii and brachialis muscles both act to flex the forearm.
What muscle is the prime mover of arm flexion and adduction?
| The teres major crosses on the lateral side of the shoulder joint to produce… Adduction | a muscle that crosses on the posterior side of the knee joint produces.. Flexion | The …….. crosses the anterior side of the shoulder joint and is the prime mover of arm flexion Pectoralis major |
|---|
What is the prime mover for shoulder abduction?
The middle region of the deltoid muscle
is the prime mover for arm abduction. The pectoralis major acts as an antagonist to the middle deltoid anteriorly, whilst the latissimus dorsi acts as the antagonist posteriorly.
What muscles are the prime mover for lateral flexion?
Being large and superficial,
the trapezius
covers many deeper muscles. Although the muscle is largely categorized as a prime mover of the shoulder and upper arm, its attachments to the skull and cervical vertebrae make it a prime mover in cervical extension, lateral flexion, and rotation as well.
How do you heal the Brachialis muscle?
- Rest. Limit use as much as possible during the 72 hours following the onset of pain.
- Ice. To limit inflammation and swelling, you should apply ice for 20 minutes every two hours.
- Compression. To decrease swelling, loosely wrap your forearm with a medical bandage.
- Elevation.
What is the antagonist muscle to the pectoralis major?
| Pectoralis major | Actions Clavicular head: flexes the humerus Sternocostal head: horizontal and vertical adduction, extension, and internal rotation of the humerus Depression and abduction of the scapula. | Antagonist Deltoid muscle, Trapezius | Identifiers | Latin Musculus pectoralis major |
|---|
What would the prime mover be for the flexion of the arm?
During forearm flexion, for example lifting a cup, a muscle called the
biceps brachii
is the prime mover.
What is the prime mover for forearm extension?
The triceps brachii
has four places where it attaches to the scapula, humerus, and ulna. This muscle plays a big role (that’s what prime mover means) in extending the elbow joint from a bent to a straight position.
What muscle extends the arm when pushing against a wall?
Triceps Brachii
: A muscle of the posterior compartment of the upper arm that extends the forearm.
Which muscle supports the arm in a position of 90 degrees of abduction?
The trapezius and serratus anterior
muscles work in tandem to coordinate rotation and movement of the scapula to accommodate the full range of motion of the arm. Specifically, they facilitate abduction of the arm from 90 degrees and further upwards.
What muscle allows you to lift your arm?
What Is It?
Your rotator cuff
is made up of muscles and tendons that keep the ball (head) of your upper-arm bone (humerus) in your shoulder socket. It also helps you raise and rotate your arm.
What muscle is responsible for abduction of the shoulder?
The primary muscles involved in the action of arm abduction include the
supraspinatus, deltoid, trapezius
, and serratus anterior.
What is the prime mover for neck flexion?
The prime movers of head/neck flexion are: the
sternocleidomastoid, anterior scalene, longus capitis, and the longus colli
.
What muscle pulls head backward?
| CERVICAL MUSCLES FUNCTION NERVE | Spinalis Cervicis Extends & rotates head Middle/lower cervical | Spinalis Capitus Extends & rotates head Middle/lower cervical | Semispinalis Cervicis Extends & rotates vertebral column Middle/lower cervical | Semispinalis Capitus Rotates head & pulls backward C1 – C5 |
|---|
When someone is doing biceps curl exercise what prime movers are working?
In a bicep curl the bicep is the agonist on the way up when it contracts concentrically, and on the way down
when it contracts eccentrically
. This is because it is the prime mover in both cases.
