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Which muscle will depress the scapula or elevate the ribs?
The pectoralis minor originates on the third to the fifth ribs (and elevates ribs). It depresses the scapula (and elevates ribs).
Which muscle acts as a synergist with pectoralis minor during abduction of scapula?
The serratus anterior muscle acts as a synergist with the pectoralis minor during abduction of the scapula. These two muscles work together to provide stability and control movement of the scapula during activities like raising your arms overhead.
Moves the scapula forward and downward?
The primary muscle responsible for moving the scapula forward and downward is the serratus anterior. This muscle originates along the upper eight or nine ribs and inserts along the inner border of the scapula. Contraction of the serratus anterior pulls the scapula forward and downward along the ribcage.
What is pectoralis epicoracoidea?
Muscles in the pectoral region of a frog. It opposite of dorsalis scapula by: Adrenocorticotropic hormone and Adenosine Tri Phospate with anti deuretic hormone and nicotinamide adenine dinucleotide phospate hydrogen and also rectus femoris anticus and horizontal skeletogenious septum
Does the trapezius contract?
Trapezius muscle- located from the skull through the cervical and thoracic vertebrae to the lateral 1/3 of the clavicle and spine of scapula. Function: Elevates, Depresses, Retracts, and rotates the scapula up and down. Innervated by the Spinal Accessory Nerve
What flat thoraic muscle deep to the pectoralis major that acts to draw the scapula inferiorly or to elevate the rib cage?
External intercostals
Will the pectoralis minor inferiorly or superiorly rotate the scapula?
The pectoralis minor primarily aids in the inferior rotation of the scapula. When it contracts, it pulls the coracoid process of the scapula downward, which contributes to this rotational movement. This action is important for various arm movements, particularly those involving adduction and extension.
Which muscle will depress the scapula or elevate the ribs?
The pectoralis minor originates on the third to the fifth ribs (and elevates ribs). It depresses the scapula (and elevates ribs).
Is the pectoratealis major anterior or posterior to subscapularis muscle?
The pectoralis major muscle is anterior to the subscapularis muscle. The pectoralis major is located on the front of the chest, while the subscapularis is situated on the anterior surface of the scapula, towards the back of the thoracic cavity. Thus, in relation to the subscapularis, the pectoralis major is positioned in front.
Which of the muscles pull the scapula into a down?
Pectoralis Minor
Which shoulder joint muscles do not attach on the scapula?
Pectoralis Major
Are the thoracic vertebrae medial or lateral to the scapula?
You can describe them as medial to the scapula.
What are the actions of serratus anterior and pectoralis minor?
The serratus anterior primarily functions to protract and stabilize the scapula against the thoracic wall, allowing for upward rotation of the scapula during arm elevation. It is crucial for movements like pushing and reaching. The pectoralis minor, on the other hand, assists in stabilizing the scapula by pulling it forward and downward, and it can also aid in elevating the ribs during forced inspiration. Together, these muscles play significant roles in shoulder and upper limb mechanics.
Which muscle acts as a synergist with pectoralis minor during abduction of scapula?
The serratus anterior muscle acts as a synergist with the pectoralis minor during abduction of the scapula. These two muscles work together to provide stability and control movement of the scapula during activities like raising your arms overhead.
Where is the orgin of the pectoralis minor?
The pectoralis minor muscle originates from the anterior surfaces of the third, fourth, and fifth ribs, near their costal cartilages. It then extends to insert onto the coracoid process of the scapula. This muscle plays a role in stabilizing the scapula and assisting with movements of the shoulder.
What muscles is the prime mover to protract scapula?
By protraction, I assume that you mean shifting (rotating) the shoulder girdle anteriorly, which involves moving the scalula away from the spine (such as is requires when reaching forward). This motion requires movement at the sternoclavicular, acromioclavicular, and coracoclavicular joints, and is performed by actions of the serratus anterior, pectoralis minor and pectoralis major.The opposite movement, retraction, is backward movement of the shoulder girdle, and involves moving the scapula back toward the spine. Trapezius (middle and lower fibers), rhomboids and latissimus dorsiare responsible for retraction.
Do the pectorialis major and pectoralis minor produce different movement?
Yes, the pectoralis major is responsible for movements like arm flexion and horizontal adduction of the shoulder. In contrast, the pectoralis minor is involved in stabilizing the scapula by drawing it forward and downward.
