Which muscles depress the humeral head?

Asked By: Lyudmila Schebrov | Last Updated: 18th March, 2020
Category: medical health bone and joint conditions
4.5/5 (160 Views . 35 Votes)
The subscapularis, infraspinatus, and teres minor depress the humeral head, counteracting the upward pull of the deltoid (Inman et al. 1944). The infraspinatus and teres minor are the only cuff muscles that produce external rotation.

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Likewise, what muscles depress the shoulder?

Function

Name Muscles
Scapular elevation levator scapulae, the upper fibers of the trapezius
Scapular depression pectoralis minor, lower fibers of the trapezius, subclavius, latissimus dorsi
Arm abduction True abduction: supraspinatus (first 15 degrees), deltoid; Upward rotation: trapezius, serratus anterior

Beside above, what muscles lift the arm above the head? 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. Each one of these muscles is part of the rotator cuff and plays an important role: Supraspinatus.

Keeping this in consideration, what muscles cause scapular depression?

The elevation is accomplished by the trapezius, levator scapulae, and rhomboid muscles. Depression is accomplished through the force of gravity and the actions of the latissimus dorsi, serratus anterior, pectoralis major and minor, and the trapezius muscles.

Where is supraspinatus pain felt?

Supraspinatus muscle. The supraspinatus muscle assists abduction of the arm and stabilization of the humerus head during arm movements. TrPs within the supraspinatus muscle elicit a referred pain felt as deep pain around the shoulder, particularly over the mid-deltoid region.

39 Related Question Answers Found

Do shoulder shrugs work?

What muscles does a shoulder shrug work? The main muscles that shoulder shrugs target are the trapezius muscles. When these muscles are strengthened through exercise, you will have an easier time maintaining proper posture. A strong trapezius pulls your shoulders back and helps stabilize your neck and upper back.

What muscle is between the scapula?

The rhomboid muscles in your upper back connect the inner edges of your shoulder blades to your spine. A rhomboid strain is a stretch or tear of these muscles. A rhomboid spasm is a sudden tightening of the muscle that you cannot control.

What muscles extend the shoulder?

An extension is when you move your arms and stick them out behind you. The muscles involved in the flexion movement include the anterior deltoid, pectoralis major and coracobrachialis. For a shoulder extension, your body uses the latissimus dorsi, teres major and minor and posterior deltoid muscles.

What is the muscle on top of your shoulder called?

Supraspinatus: This small muscle is located at the top of the shoulder and helps raise the arm away from the body.

What is shoulder depression?


2. Depression of the Shoulder Girdle - A movement opposite to elevation. The scapula moves downward or in an inferior direction. Shrugging the shoulder illustrates elevation and depression of the shoulder girdles. The normal ranges of motion of these movements are 40° of elevation and 10° depression.

What causes shoulders to be uneven?

Uneven shoulders can also happen when you have structural issues or muscular skeletal imbalances in the body. Asymmetrical sports such as tennis, golf, and baseball are especially likely to cause uneven shoulders and postural imbalances. Other common causes of uneven shoulders include: poor posture.

How do shoulder muscles work?

Movements at the shoulder joint
The shoulder has a huge range of movement compared to the hip, or other joints. The shoulder muscles enable the following movements: Flexion – moving your arm forwards and upwards. Extension – moving your arm from the front down and out backwards.

What is shoulder stability?

Shoulder instability is a problem that occurs when the structures that surround the shoulder joint do not work to keep the ball tightly within its socket. If the joint is too loose, it may slide partially out of place, a condition called shoulder subluxation.

What muscles pull the scapula down?

To achieve the correct scapular position, you need to use your mid and lower trapezius muscles to retract the shoulder and pull the scapula down medially.

What muscles cause upward rotation of the scapula?


The serratus anterior and upper and lower trapezius muscles are the primary stabilizing synergists which produce upward scapular rotation and posterior tilt, whereas the rhomboids, levator scapulae, and pectoralis minor muscles are responsible for downward scapular rotation and anterior tilt.

How do you stretch your trapezius?

Stretch. Forward stretch: Gently pull your head forward with your chin toward your neck as if you were nodding. Hold this position for 10 to 15 seconds. Side stretch: Gently pull your head to the side so your ear approaches the opposite shoulder.

What muscles attach to the humerus?

The muscles attached to the humerus are the deltoid, pectoralis major, teres major, latissimus dorsi, infraspinatus, teres minor, biceps brachii, coracobrachialis muscle, brachioradialus, triceps brachii and the anconeus.

What are scapular stabilization exercises?

Scapular pushups
Stand at a wall with hands placed on the wall, chest height and shoulder-width apart. Keep the arms locked out and palms flat on the wall. Without bending your arms, reach with your sternum towards the wall until both shoulder blades come together in the back.

Why is scapular retraction important?

Why is scapular retraction important? Being able to retract your scapula is important because protracted scapulae make it difficult to move your shoulder joints well. Protracted scapulae can make it very difficult to stand up straight because the weight of your arms is dragging your thoracic spine into kyphosis.

How do you strengthen your rhomboids?


These five exercises help strengthen the rhomboid muscles and improve your posture.
  1. Prone lateral raise. Lie flat on your stomach on a mat or bench.
  2. Front raise thumbs up. Lie down on your stomach on a mat or bench with your forehead resting down.
  3. Scapular retraction.
  4. Rear delt flys.
  5. Scapular wall slides.

Do the lats depress the scapula?

Because of the relatively horizontal line of pull of the muscle fibres that run between the inferior angle of the scapula and the thoracic vertebrae, we could suspect that the lats assist in retraction of the scapula (pulling the shoulder blades back and together).

How do you treat upper arm muscle pain?

Treatment
  1. Rest: Take a break from your normal activities.
  2. Ice: Place an ice pack or bag of frozen peas on the sore area for 15 to 20 minutes three times a day.
  3. Compression: Use a compression bandage to reduce swelling.
  4. Elevation: Elevate your arm above heart level to help reduce swelling.