When the left and right splenius capitis contract together, the resulting movement is: extension of the neck. The most laterally placed of the three erector spinae components, the ___________ group, is composed of three parts: cervical, thoracic, and lumbar.

Which back muscle extends the head?

The two trapezius muscles together form a kite shape. The trapezius muscle can be involved in extending the head upward or neck backward, rotating/turning the head, or lifting the shoulder blade. Erector spinae. Numerous muscles comprise the erector spinae muscles throughout the spine.

What is the muscle indicated by the number 2?

The intermediate articularis genus muscle bundles (indicated by the number 2) always arose from the anterior surface of the femur. However, in 60% of the specimens, muscle fibers also originated from the vastus intermedius aponeurosis.

Which of the following muscles elevates and retracts adducts scapula?

Rhomboid major and minor muscles attach from the vertebral column to the medial border of the scapula, slightly below the levator scapulae muscles. These muscles retract and elevate the scapula.

Which muscle will elevate the scapula quizlet?

What muscles elevate the scapula? 1. Trapezius m.

Sternocleidomastoid muscle and Splenius capitis

33 related questions found

What muscle is responsible for retracting the scapula?

Retraction is accomplished by the actions of the trapezius, rhomboids, and latissimus dorsi muscles. The elevation is accomplished by the trapezius, levator scapulae, and rhomboid muscles.

When the left and right Splenius capitis contract together the resulting movement is quizlet?

When the left and right splenius capitis contract together, the resulting movement is: extension of the neck. The most laterally placed of the three erector spinae components, the ___________ group, is composed of three parts: cervical, thoracic, and lumbar.

What is the Semitendinosus muscle?

The semitendinosus is one of the three muscles in the hamstring muscle group. The other two are the semimembranosus and the biceps femoris. The semitendinosus is the longest of these three muscles, and it runs along the back of the thigh.

What is the Coracobrachialis?

Coracobrachialis muscle is one of the three muscles that originates from to the coracoid process of the scapula. It is situated at the superomedial part of the humerus.

What type of muscle makes up the internal urethral sphincter?

The internal urethral sphincter consists of smooth muscle and is continuous with the detrusor muscle of the bladder. The muscle fibers form a circular configuration that is continuous with the smooth muscle fibers of the bladder.

What is bladder detrusor muscle?

The primary function of the detrusor muscle is to contract during urination to push the urine out of the bladder and into the urethra. The detrusor muscle will relax to allow the storage of urine in the urinary bladder.

What muscles surround the urethra?

The urethral sphincters are two muscles used to control the exit of urine in the urinary bladder through the urethra. The two muscles are either the male or female external urethral sphincter and the internal urethral sphincter. When either of these muscles contracts, the urethra is sealed shut.

What is Splenius capitis?

Musculus splenius capitis is one of the deep (or intrinsic) muscles of the back. It is a broad strap-like muscle in the back of the neck. Deep to Sternocleidomastoid at the mastoid process.

What causes Splenius capitis pain?

The onset of pain is often caused by motor vehicular trauma, blunt trauma, falls, and, in particular, postural situations where superior and inferior lateral oblique movements of the head on the neck occur.

What is Semispinalis capitis?

Semispinalis capitis is a long paired muscle that belongs to the deep layer of muscles of the back. It forms the superior, and largest, component of the three-part semispinalis muscle. ... These muscles participate in extension, lateral flexion and rotation of the head, cervical and thoracic spine.

What is Popliteus muscle?

The popliteus (pronounced pop-lit-ee-us) is a thin, flat, triangular muscle in the posterior compartment of the distal leg region. It helps to form the lower part of the popliteal fossa, or the pit of the knee. Without this little muscle, you'd be quite locked-legged.

What is Pectineus muscle?

The pectineus muscle is the most anterior dductor of the hip. It can be classified in the medial compartment of thigh(when the function is emphasized) or the anterior compartment of thigh (when the nerve is emphasized).

What are hamstring muscles?

The hamstring muscles are a group of three muscles that run along the back of your thigh from your hip to just below your knee. These muscles make it possible to extend your leg straight behind your body and to bend your knee.

What happens if you contract your right Sternocleidomastoid?

When just one SCM muscle contracts, it tilts your head to the same side (called the ipsilateral side) to which the muscle is located. For example, the SCM on the right side of your neck tilts your head to your right. One SCM can also turn, or rotate, your head to the opposite side.

What is a Retinaculum quizlet?

Retinacula - are structures that bind down and hold tendons in place. There are 5 in the tarsal area. Da1) Crural extensor/ Proximal extensor. Da2)Tarsal extensor/Middle extensor.

What are Tendinous intersections quizlet?

tendinous intersections. The rectus abdominis has small connective tissue bands called tendinous intersections, located horizontally across the muscle dividing it into small segments, and the muscle is enclosed by the rectus sheath.

What muscle is responsible for internal rotation of the shoulder?

The teres major provides internal rotation, extension, and adduction of the shoulder; it's considered a fusiform muscle. The subscapularis muscle internally rotates the humerus; the upper portion of the muscle influences abduction, while the lower area influences adduction.

What is supraspinatus muscle?

Description. Supraspinatus is the smallest of the 4 muscles which comprise the Rotator Cuff of the shoulder joint specifically in the supraspinatus fossa. It travels underneath the acromion.

Which of the following muscles is most commonly affected by scapular winging?

The most common etiology of a winged scapula is usually due to damage or impaired innervation to the serratus anterior muscle. The nerve that innervates this muscle is the long thoracic nerve. Sometimes, this nerve can be damaged or impinged, leading to malfunction of the serratus anterior muscle.