Deep muscles - Packet 5

Extensor

A muscle serving to lengthen (extend) the body part.

What action could you ask your partner to perform to feel the contraction of the long head of the triceps brachii?

Extend elbow (against your resistance)

Brevis

Latin for a short muscle of the head.

To outline the distal tendon of the triceps brachii, which bony landmarks do you want to locate?

Olecranon process

Can you name an everyday action in which you use your pectoralis major?

Push up/hug/ lifting OT books

Rowing a boat

The scapula protracts (adduction) and retracts (abduction) the muscles needed to perform this movement. The muscles used to protract the scapula are the serratus anterior, pectorals major and minor. The muscles used to retract the scapula are the rhomboideus major, minor and trapezius.

Longus

a protracted (long) structure (muscle) in the body, such as the adductor longus.

The most important aspect when palpating near the breast tissue is:

communicating your intentions to the partner

An action to ask your partner to perform to feel the levator scapula contract is ________?

elevation of scapula

Passive abduction of the shoulder would ____________ the coracobrachialis

lengthen

Passive flexor of the shoulder would ____________ the triceps brachii

lengthen

The serrates anterior abducts the scapula, making it a direct antagonist to the

rhomboids

The rhomboids are deep tp the _______________ muscle and superficial to the ____________ ____________ muscles.

trapezius erector spinae

Flexor

A muscle serving to bend a body part. The patient received an injury to the right hip-flexor.

Raising your hand high over your head during class

Abduction is used to move the arm away from the body. This uses the deltoid (all fibers) and the supraspinatus.

Can you name two actions in which the rhomboids and trapezius are synergists and one action in which they are antagonist?

Adduct scapula and elevate the scapula Rhomboids downwardly rotate it

Passive extension of the shoulder would ______________ the biceps brachii

lengthen

Passive pronation of the forearm would ____________the biceps brachii

lengthen

Between which two bony landmarks can the coracoclavicluar ligament be located?

Clavicle coracoid process

If you follow the fibers of the pectoralis major laterally, they blend with the fibers of which muscle?

deltoid

The brachial artery can be located on the medial side of the arm between which two muscles?

Biceps brachii and triceps brachii

The pectorals minor has the potential to create neurovascular compression on which three vessels?

Brachial Plexus Axillary artery Axillary vein

Flexing the shoulder and pulling it anteriorly while you palpate the pectoralis major in a side lying portion has which two benefits?

Brings pec major off the chest wall Allows breast tissue to fall away

The pectoralis major is divided into three segments:

Clavicular, sternal, costal

As you follow the biceps brachii belly proximally, it becomes deep to which muscle?

Deltoid (anterior fibers)

How can you position the arm to bring the subacromial bursa forward?

Extend the shoulder

What should you do if your partner feels a sharp, shooting sensation down her arm while you are palpating in the axilla?

Immediately release and adjust your position posteriorly

How can you position the shoulder to bring the belly of the coracobrachialis to a superficial position?

Laterally rotate and abduct the shoulder to 45 degrees

Spinatus

Latin word for "above or over." Spinatus comes from the Latin word spina meaning "thorn."

Most of the serratus anterior is deep to the scapula and which two muscles?

Latissimus dorsi Pectorals major

Which head of the biceps brachii passes through the intertubercular groove?

Long head

Bringing your hand to your heart

Medially rotate your shoulder. The muscles used are the deltoid (anterior fibers), latissimus dorsi, teres major, subscapularis, and pectorals major (all fibers).

To locate the belly of the corachobracialis, from which muscle would you slide off and into the axilla?

Pectoralis major

In anatomical position, the coracobrachialis is deep to which two muscles?

Pectorals major Anterior Deltoid

When accessing the levator scapula in a supine position, the benefits of rotating the head 45 degrees away from the side you are palpating include:

Shifts cervical TVPs further anterior, gives levator more palpable tension, shortens + softens the overlaying trapezius

Reaching behind you, arm extended

Shoulder extension is used to reach behind you. The muscles used are the deltoid (posterior fibers), latissimus dorsi, teres major, pectoralis major (lower fibers), triceps brachii (long head).

Reaching in front of you, arm extended.

Shoulder flexion is used to reach in front of you. The muscles used are the deltoid (anterior fibers), pectorals major (upper fibers), biceps brachii and the coracobrachialis.

Minor

Something that is less than something else. The pectoralis minor is smaller than the pectoralis major.

The levator scapulae is situated between which two muscles on the lateral side of the neck?

Splenius capitis Posterior scalene

The long head of the triceps brachii weaves between which two muscles before attaching at the infraglenoid tubercle?

Teres major Teres minor

Which muscles are part of the rotator cuff that serves to stabilize the shoulder joint? (2 pts)

The SITS muscles are part of the rotator cuff that serve to stabilize the shoulder joint. These muscles are the supraspinatus, infraspinatus, teres minor and subscapularis.

Accessing the medial portion of the serratus anterior by curling your fingers around the medial border of the scapula, your fingers will inherently have to work through the bellies of which two muscles?

Trapezius + rhomboids

Can you name an everyday action in which the biceps brachii's ability to supinate the forearm would come in handy?

Turning a door knob, tightening gasoline cap, digging in sand

The ligaments arch that protects the rotator cuff tendons and subacromial bursa from direct trauma is formed by the ___________________ ligament.

coracoacromial

to bring the coracoacromial ligament closer to the surface ___________ the arm

extend

Major

prominent or significant in size. The pectorals major is larger than the pectoralis minor.

The thin sheet of fascia extending from the distal biceps brachii tendon is called

the biciptal aponeurosis