Where does the Sternocleidomastoid attach?

The sternocleidomastoid muscle is a two-headed neck muscle, which true to its name bears attachments to the manubrium of sternum (sterno-), the clavicle (-cleido-), and the mastoid process of the temporal bone (-mastoid).

One attaches on the front (i.e., the anterior surface) of the manubrium. The manubrium is uppermost section of the breastbone. The other head attaches on the top part (called superior aspect) of the collarbone, near the midline of the body.

Sternocleidomastoid: A thick rectangular muscle that is responsible for many movements within the neck. Attachments: Dual-headed, the sternocleidomastoid originates from the clavicle and the sternum and attaches to the mandible.

It is a ‘two headed’ muscle, meaning it has two origin sites and one insertion site. The SCM’s origins are the sternum and clavicle and its insertion is the mastoid process behind the ear. The actions of the SCM are to flex and rotate the head. It does this by contracting both SCMs together or one alone, respectively.

Where does the sternocleidomastoid muscle originate and insert? ORIGINATES from the external surface of the occipital bone and posterior midline of the cervical and thoracic regions. INSERTS on the lateral third of the clavicle and parts of the scapula.

Inferiorly, the muscle has two heads, tendinous sternal head attached to manubrium sterni and muscular clavicular head attached to medial third of the clavicle (clavicular head). Superiorly, muscle is attached to the mastoid process of the temporal bone and superior nuchal line of the occipital bone.

Insertion. The levator scapulae inserts on to the vertebral margin of the scapula between the superior angle and the root of the spine.

Dissimilar to other muscles of the body that lie deep to the subcutaneous tissue, the platysma is located within the subcutaneous tissue of the neck (superficial layer of the cervical fascia). Its superficial position means that surgical dissections of the neck must acknowledge the underlying neurovascular structures.

The jaw muscles move the jaw in a complex three-dimensional manner during jaw movements. There are three jaw-closing muscles (masseter, temporalis, and medial pterygoid) and two jaw-opening muscles (lateral pterygoid and digastric). The basic functional unit of muscle is the motor unit.

Insertion. The muscle inserts on the lateral third of clavicle, acromion, and spine of scapula.

The mastoid process is part of the temporal bone. It is the insertion for the sternocleidomastoid muscle. In fact it is this muscle that causes this landmark to develop.

Origin: Ribs 3-5 near costal cartilages, Inserts medial border and superior surface of coracoid process of scapula, innervation Medial Pectoral nerve, Fx, Stabilizes scapula by drawing it inferiorly and anteriorly against thoracic wall.

Muscle insertion refers to a muscle’s distal attachment—the end of the muscle furthest away from the torso. For example, the bicep insertion occurs at the elbow.

The sternohyoid is a strap like infrahyoid muscle that connects the hyoid bone with the clavicle and sternum. … The function of this muscle is to reestablish the breathing process by pulling the hyoid bone and larynx inferiorly after deglutition. This article will discuss the anatomy of the sternohyoid muscle.

From the orbital margin, the muscle extends inward and inserts on the lateral palpebral raphe, which is a ligament that is located on the outer part of the eye socket. The orbicularis oculi muscle inserts onto the lateral palpebral raphe which is located on the outer part of each eye socket.

What is the inferior attachment/insertion of the temporalis? Temporal Fossa/Coronoid process and ramus of mandible.

The levator scapulae originates from the posterior tubercle of the transverse process of cervical vertebrae one to four. The muscle is inserted into medial border of the scapula extending from superior angle to junction of spine and medial border of scapula.

Rhomboid minor muscle is a muscle of the back and upper limb, which acts on the scapula.

The rhomboid muscles are a large group of muscles in your upper back. They’re made up of the rhomboid major and the rhomboid minor. These and other muscles form the shoulder girdle that holds your shoulder blade and shoulder stable.

What is the only extrinsic eye muscle to originate from the anterior orbit? … Which of the following bones is NOT attached to the sternocleidomastoid muscle? Mandible. What is the largest and most powerful muscle of the erector spinae muscle group?

Muscles of the head, face, and neck (labeled as triangularis near chin). The depressor anguli oris muscle (triangularis muscle) is a facial muscle. It originates from the mandible and inserts into the angle of the mouth. It is associated with frowning, as it depresses the corner of the mouth.

The platysma muscle is a muscle that begins at the upper chest/shoulder areas and extends upward through the sides of the neck and attaches to the skin around the mouth and mandible. In the neck, this muscle covers the sternocleidomastoid, which is a deep muscle that runs up vertically on each side of the neck.

Platysma muscleArterybranches of the submental artery and suprascapular arteryNervecervical branch of the facial nerve

The strongest muscle based on its weight is the masseter. With all muscles of the jaw working together it can close the teeth with a force as great as 55 pounds (25 kilograms) on the incisors or 200 pounds (90.7 kilograms) on the molars.

Because muscles in your neck are connected to your jaw, muscle tension that starts in your TMJ can move to your neck. This causes aches, spasms, tension and reduced flexibility in your neck.

Mylohyoid muscle They interdigitate in the midline raphe anteriorly and posteriorly, they insert into the anterior part of the body of the hyoid bone.

The soleus is located in the superficial posterior compartment of the leg. … A majority of soleus muscle fibers originate from each side of the anterior aponeurosis, attached to the tibia and fibula.

Attachments of Soleus Muscle: Origin & Insertion Origin: (proximal attachments): a. Proximal half of posterior surface of tibia along soleal line.

OriginPosterior surface of tibia, posterior surface of fibula and interosseous membraneInsertionTuberosity of navicular bone, all cuneiform bones, cuboid bone, bases of metatarsal bones 2-4

They found that the lower trapezius originates on the spine and extends from T2 to T12 and inserts onto the spine of the scapula from the acromian process to its root. It is closely aligned to the middle trapezius which attaches to the C7 and T1 vertebrae, and this also attaches to the spine of the scapula.

The levator scapulae muscle attaches to the top four cervical vertebrae and runs down the side of the neck to where it connects with the top of the shoulder blade. This muscle helps with lifting the shoulder blade, bending the neck to the side, and rotating the head.

It attaches distally onto the spine of the scapula, acromion, and distal third of the clavicle. Detailed morphometric measurements have been performed on this muscle (Kamibayashi & Richmond, 1998). Because of its size and the many locations of its attachments, the trapezius muscle also has many actions.

It’s inserted here on the deltoid tuberosity of the humerus. The deltoid muscle has multiple functions: it’s almost like three different muscles. Its anterior part is a powerful flexor, its posterior part is a powerful extensor, and its lateral part is a powerful abductor.

The pectoralis major muscle forms the anterior wall of the axilla. It originates in the clavicle, sternum, and first six costal cartilages and inserts in the greater tubercle of the humerus.

The following muscles attach to the humerus along its shaft: Anteriorly – coracobrachialis, deltoid, brachialis, brachioradialis. Posteriorly – medial and lateral heads of the triceps (the spiral groove demarcates their respective origins).