what is the origin and insertion of the platysma

Full Answer

What is the difference between origin and insertion?

What are the Similarities Between Origin and Insertion?

• Origin and insertion are two types of attachment points of skeletal muscles.
• They are important for muscle contractions and movements.
• Moreover, they are at the opposite ends of the belly of a muscle.

Is the sternocleidomastoid named for its origin and insertion?

Is the sternocleidomastoid named for its origin and insertion? It is given the name sternocleidomastoid because it originates at the manubrium of the sternum ( sterno-) and the clavicle ( cleido- ), and has an insertion at the mastoid process of the temporal bone of the skull.

Why does my platysma muscle hurt?

• Sit or stand facing forward.
• Exhale and slowly turn your head to the right, keeping your shoulders relaxed and down.
• Inhale and return to center.
• Exhale and turn to look over your left shoulder.
• Do 10 rotations on each side.

How to learn the origins and insertions of muscles?

• You need to learn 26 muscles at level 2 and 50 at level 3 anatomy
• Breaking up your muscle learning into 15-minute chunks will help avoid overwhelm and revision fatigue
• Use these 8 steps to remember the origins and insertions
• Simplify your muscle memory revision with our Muscle Memory sprint
• Here’s what Lydia had to say about the Muscle Memory Sprint

What is the origin of the platysma?

The platysma, innervated by the facial nerve, is a thin, sheet-like voluntary muscle. Origin: the muscle has a broad origin with fibers arising from the fascia of the upper thorax including the clavicle, acromial region, pectoralis major and deltoid muscles.

Where does the platysma connect?

Anatomy of the Platysma Muscle A paper in the Journal of Craniofacial Surgery (JCS) explains that the muscle begins in your upper chest at your collarbone. From there, it extends upward through the front of your neck and attaches to the skin and connective tissue in your lower face and cheeks.

What does the Platysma muscle connect to?

That muscle is the platysma muscle, which is a muscle that runs from the upper chest/shoulder area, up through the neck, and attaches to the skin around the mouth and the lower jawbone.

What is the location of platysma?

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.

Where is the origin of the sternocleidomastoid?

Sternocleidomastoid Attachments It originates on the anterior surface of the manubrium, and the superior border and anterior surface of the medial third of the clavicle. The SCM converges into one point and inserts on the lateral surface of the mastoid process and the nuchal line of the occipital bone.

What cranial nerve Innervates platysma?

Platysma muscleNervecervical branch of the facial nerveActionsdraws the corners of the mouth inferiorly and widens it (as in expressions of sadness and fright). Also draws the skin of the neck superiorly when teeth are clenchedAntagonistmasseter muscle, temporalis muscleIdentifiers11 more rows

What is the origin and insertion of the trapezius muscle?

Trapezius Attachments It originates on the occipital bone, the ligamentum nuchae, and the spinous processes of T01–T12. The trapezius inserts on the lateral third of the clavicle, as well as the acromion and scapular spine of the scapula.

What is the origin and insertion of the temporalis?

The temporalis muscle is a thin, fan-shaped muscle situated within the temporal fossa of the skull....Temporal muscle.OriginTemporal fossa (up to inferior temporal line), Temporal fasciaInsertionApex and medial surface of coronoid process of mandible3 more rows

What is the origin and insertion of the Buccinator muscle?

Origin and insertion Its superior part arises from the outer surface of the alveolar process of the maxilla opposite to the three maxillary molar teeth. The inferior part also arises from the alveolar part of the mandible opposite to the three mandibular molar teeth.

What is meant by platysma?

noun, plural pla·tys·mas, pla·tys·ma·ta [pluh-tiz-muh-tuh], Anatomy. a broad, thin muscle on each side of the neck, extending from the upper part of the shoulder to the corner of the mouth, the action of which wrinkles the skin of the neck and depresses the corner of the mouth. GOOSES. GEESES.

Which of the following is the insertion of the sternocleidomastoid muscle?

The insertion is the lateral surface of the mastoid process of the temporal bone and the lateral half of the superior nuchal line of the occipital bone.

Is the platysma a muscle of mastication?

The muscles of mastication also function to approximate (bring together or close) the teeth. The superficial muscle of the neck, the platysma muscle, also assists with depression of the mandible against resistance.

What is the platysma muscle?

The platysma muscle is expansive in size, with a broad width that spans the collarbone, or clavicle, and the side of the neck. Its point of origination is the upper portions of the pectoral, or chest, and the deltoid, or shoulder.

Where does the risorius insert?

It inserts into the anterior fibers to the base of mandible, posterior fibers to the skin of the lower face and lip and may be continuous with the risorius .

How to stretch your neck and jaw?

Stand or sit with your shoulders relaxed, facing forward. Place your lower lip over your upper lip and tilt your head back, feeling the stretch along the sides of the jaw and along the front of the neck. Stretch until you can see the ceiling, and hold this position for several seconds.

Where is the platysma muscle located?

Platysma. The platysma muscle is a band of tissue found in the chest, neck, and facial region. This muscle covers a portion of a neck muscle known as the sternocleidomastoid. The platysma muscle is expansive in size, with a broad width that spans the collarbone, or clavicle, and the side of the neck. Its point of origination is the upper portions ...

Which muscle controls the eyelid?

In some instances, the platysma muscle can travel as far upwards as the cheekbone and the lower region of the muscle that controls eyelid movements, known as the orbicularis oculi. The facial nerve allows the muscle to move. With the platysma muscle , an individual can slightly part the mouth and draw out the corners of the lips to the side and down.

What muscle is used to draw out the corners of the lips?

With the platysma muscle, an individual can slightly part the mouth and draw out the corners of the lips to the side and down. These movements are used when negative emotions like fear and fright are conveyed. Last medically reviewed on January 26, 2015.

Where does platysma originate?

We mentioned that the platysma muscle originates from the upper chest and shoulder area, but specifically, it originates from the fascia of the pectoral (or chest) muscle and the deltoid (shoulder) muscles. Fascia is a thin layer of fibrous connective tissue under the skin that surrounds muscles and organs.

Where does the platysma muscle contract?

Once the platysma muscle receives the electrical impulses from the cranial nerve VII, it will contract and perform its action on the mandible and/or lips. The platysma muscle is a muscle the runs from the upper chest and shoulder area, up through the neck, and attaches to the skin around the mouth and the lower jawbone.