What is the function of the Sternohyoid?

This group of muscles contains four main muscles: the omohyoid muscle, the sternohyoid muscle, the sternothyroid muscle, and the thyrohyoid muscle. The primary function of this group of muscles is to depress the hyoid bone during speech and swallowing.

What Innervates the sternohyoid muscle?

The sternohyoid muscle is an infrahyoid muscle of the neck that is innervated by the ansa cervicalis of the cervical plexus receiving fibers from the ventral rami of C1-C3 spinal nerves.

Are there two Sternohyoid muscles?

The sternohyoid muscle runs from the dorsal manubrium to the ventrocaudal hyoid bone, with attachments to the sternoclavicular joint capsule, and the sternothyroid muscle attaches along the dorsal midline of the manubrium.

What are the infrahyoid muscles?

Infrahyoid muscles: Together, the infrahyoid muscles play an active role in swallowing through the movement of the larynx. The omohyoid, sternohyoid, and thyrohyoid act to depress the hyoid bone. The thyrohyoid elevates the larynx whereas the sternothyroid depress the larynx.

What is the origin of sternohyoid muscle?

The sternohyoid muscle arises from the posterior border of the medial end of the clavicle, the posterior sternoclavicular ligament, and the upper and posterior part of the manubrium of the sternum. Passing upward and medially, it is inserted by short tendinous fibers into the lower border of the body of the hyoid bone.

What is Sternothyroid?

The sternothyroid muscle is an infrahyoid muscle of the neck that is innervated by the ansa cervicalis of the cervical plexus receiving fibers from the ventral rami of C1-C3 spinal nerves. …

What is the Stylohyoid muscle?

The stylohyoid muscle, also known as musculus stylohyoideus in Latin, is one of the suprahyoid muscles of the neck as it extends between the base of the skull and the hyoid bone. It is a slender muscle present along the superior border of the posterior belly of the digastric muscle.

Which is a Suprahyoid muscle?

The suprahyoid muscles are a group of four muscles located superior to the hyoid bone of the neck. They all act to elevate the hyoid bone – an action involved in swallowing. The arterial supply to these muscles is via branches of the facial artery, occipital artery, and lingual artery.

Is Sternohyoid a Infrahyoid muscle?

Anatomical terms of muscle The infrahyoid muscles, or strap muscles, are a group of four pairs of muscles in the anterior (frontal) part of the neck. The four infrahyoid muscles are the sternohyoid, sternothyroid, thyrohyoid and omohyoid muscles.

Why is it called strap muscle?

The name “strap muscles” comes from their long and flat shape, similar to a belt or strap 3.

Why is it called sternothyroid?

The sternothyroid arises from the posterior surface of the manubrium of the sternum, below the origin of the sternohyoid. It also arises from the edge of the cartilage of the first rib.

What is sternothyroid?

What does the sternomastoid muscle do in a cat?

The sternocleidomastoid, also known as sternomastoid, is a paired muscle in the superficial layers of the anterior portion of the neck. It acts to flex and rotate the head. (<- function) youtube has a whole section on cat dissections and this would Loading…

What is the action of the sternohyoid muscle?

The action of the sternohyoid muscle is to depress the hyoid bone after it has been elevated by the suprahyoid muscles. The elevation of the hyoid bone and thus the larynx, happens during swallowing.

Where does the sternum go in a cat?

it has the same function in both cats and humans, its flex’s (chin to chest) and helps rotate the head. Its origin is at the sternum (bone in the centre of the chest that your ribs attach too) and goes to your jaw bone near your ear.

Is the rib cage part of the sternohyoid muscle?

The sternohyoid/sternothyroid (S) and sternocephalicus (C) muscle, as well as the rib cage (R) must be removed to visualize the laryngeal region.