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Information about Temporalis Muscle

Temporalis muscle
The Temporalis; the zygomatic arch and Masseter have been removed.
Latinmusculus temporalis
subject #109 386
Origin:temporal lines on the parietal bone of the skull.
Insertion:coronoid process of the mandible.
Artery:deep temporal
Nerve:third branch (mandibular nerve) of the trigeminal nerve
Action:elevation and retraction of mandible
Antagonist:Platysma muscle
Dorlands/Elsevier m_22/12551069
The temporalis muscle is one of the muscles of mastication.

Structure

It arises from the temporal fossa and the deep part of temporal fascia. It passes medial to the zygomatic arch and inserts onto the coronoid process of the mandible.

The temporalis muscle is covered by the temporal fascia, also known as the temporal aponeurosis.

The muscle can be felt if one places their fingers on their temples (on the sides of their head, just behind the eyebrows), while clenching and unclenching their teeth.

Innervation

As with the other muscles of mastication, control of the temporalis muscle comes from the third (mandibular) branch of the trigeminal nerve. Specifically, the temporalis is innervated by the deep temporal nerves.

Actions

Contraction of the temporalis muscle elevates the mandible. The somewhat horizontal fibers of the posterior part of the muscle retract the mandible.

Additional images


Muscles of head and neck

Frontal bone. Outer surface.

Sphenoid bone. Anterior and inferior surfaces.

Mandible. Outer surface. Side view.

Mandible. Inner surface. Side view.

Mandibular division of the trifacial nerve.


External links

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Muscles of head and neck: the head
scalp/eyelidoccipitofrontalis (occipitalis, frontalis) - orbicularis oculi - corrugator supercilii - depressor supercilii
extraocularlevator palpebrae superioris - superior tarsal - rectus (superior, inferior, medial, lateral) - oblique (superior, inferior) - intraocular: ciliary - iris dilator - iris sphincter
earauriculares - temporoparietalis - stapedius - tensor tympani
noseprocerus - nasalis (dilatator naris) - depressor septi nasi - levator labii superioris alaeque nasi
mouthlevator anguli oris/depressor anguli oris - levator labii superioris/depressor labii inferioris - zygomaticus (major, minor) - mentalis - buccinator - orbicularis oris - risorius
masticationmasseter - temporalis - pterygoid (lateral, medial)
tongueextrinsic (genioglossus, hyoglossus, chondroglossus, styloglossus) - intrinsic (superior longitudinal, inferior longitudinal, transversus, verticalis)
soft palatelevator veli palatini - tensor veli palatini - musculus uvulae - palatoglossus - palatopharyngeus
pharynxpharyngeal constrictor (inferior, middle, superior) - stylopharyngeus - salpingopharyngeus
larynxcricothyroid - cricoarytenoid (posterior, lateral) - arytenoid - thyroarytenoid
The temporalis muscle is one of the muscles of mastication.

Structure

It arises from the temporal fossa and the deep part of temporal fascia. It passes medial to the zygomatic arch and inserts onto the coronoid process of the mandible.
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The zygomatic arch is formed by the zygomatic process of temporal bone (a bone extending forward from the side of the skull, over the opening of the ear) and the temporal process of the zygomatic (the side of the cheekbone), the two being united by an oblique suture; the tendon of
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In human anatomy, the masseter is one of the muscles of mastication.

It is particularly powerful in herbivores to assist when they are chewing plants.

Origin and insertion of the two heads


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Latin}}} 
Official status
Official language of: Vatican City
Used for official purposes, but not spoken in everyday speech
Regulated by: Opus Fundatum Latinitas
Roman Catholic Church
Language codes
ISO 639-1: la
ISO 639-2: lat
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bold refer to the diagram at right.)

In the skull (8):
  • 1-9. cranium
  • 7. mandible
''In the middle ears (6):
  • malleus
  • incus
  • stapes
In the throat (1):
  • hyoid
In the shoulder girdle (4):
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Crossing the middle of the parietal bone in an arched direction are two curved lines, the superior and inferior temporal lines; the former gives attachment to the temporal fascia, and the latter indicates the upper limit of the muscular origin of the Temporalis.
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The parietal bones are bones in the human skull and form, by their union, the sides and roof of the cranium. Each bone is irregularly quadrilateral in form, and has two surfaces, four borders, and four angles.

Surfaces

External

The external surface [Fig.
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bold refer to the diagram at right.)

In the skull (8):
  • 1-9. cranium
  • 7. mandible
''In the middle ears (6):
  • malleus
  • incus
  • stapes
In the throat (1):
  • hyoid
In the shoulder girdle (4):
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The coronoid process is a thin, triangular eminence, which is flattened from side to side and varies in shape and size.

Its anterior border is convex and is continuous below with the anterior border of the ramus.
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mandible (from Latin mandibūla, "jawbone") or inferior maxillary bone is, together with the maxilla, the largest and strongest bone of the face . It forms the lower jaw and holds the lower teeth in place.
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Arteries are muscular blood vessels that carry blood away from the heart.[1] All arteries, with the exception of the pulmonary and umbilical arteries, carry oxygenated blood.

The circulatory system is extremely important for sustaining life.
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The deep temporal arteries, two in number, anterior and posterior, ascend between the Temporalis and the pericranium.

They supply the muscle, and anastomose with the middle temporal artery.
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  • Accessory nerve
  • Accessory obturator nerve
  • Alderman's nerve
  • Anococcygeal nerve
  • Ansa cervicalis
  • Anterior interosseous nerve
  • Anterior superior alveolar nerve
  • Aortic plexus
  • Auerbach's plexus
  • Auriculotemporal nerve
  • Axillary nerve

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The mandibular nerve (V3) is the largest of the three branches of the trigeminal nerve.

Structure

Roots

It is made up of two roots:
  • a large sensory root proceeding from the inferior angle of the trigeminal ganglion.

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The trigeminal nerve (the fifth cranial nerve, also called the fifth nerve or simply V) is responsible for sensation in the face. It is similar to the spinal nerves C2–S5, which are responsible for sensation in the rest of the body.
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Kinesiology is the scientific study of the anatomy, physiology, and mechanics of body movement, especially in humans. [1] The word kinesiology is derived the Greek "kinesis" (motion) + the suffix -ology or -logy from the greek "logos" or "logia"(meaning a field of study).
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Elevation, in kinesiology is the anatomical term of motion for movement in a superior direction.

It is the opposite of depression.

Muscles

  • elevation of the scapula at the shoulders (e.g.

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Retraction is the anatomical term of motion for posterior movement of the arms at the shoulders

It is the opposite of protraction. Major muscles involved include:[1][2]
  • Rhomboid major muscle
  • Rhomboid minor muscle
  • Trapezius muscle

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mandible (from Latin mandibūla, "jawbone") or inferior maxillary bone is, together with the maxilla, the largest and strongest bone of the face . It forms the lower jaw and holds the lower teeth in place.
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An antagonist is a kind of muscle that acts in opposition to the movement generated by the agonist and is responsible for returning a limb to its initial position.

Antagonistic pairs in houses

These antagonistic muscles are found in pairs called antagonistic pairs.
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The platysma is a superficial muscle that overlaps the sternocleidomastoid.

It is a broad sheet arising from the fascia covering the upper parts of the Pectoralis major and Deltoideus; its fibers cross the clavicle, and proceed obliquely upward and medialward along the side of the
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Elsevier, the world's largest publisher of medical and scientific literature, forms part of the Reed Elsevier group. Based in Amsterdam, the company has substantial operations in the UK, USA and elsewhere.
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The temporal fossa is a shallow depression on the side of the skull bounded by the temporal lines and terminating below the level of the zygomatic arch.

Boundaries

  • Above: Superior and inferior temporal lines
  • Roof: Temporalis fascia

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The temporal fascia covers the Temporalis muscle.

It is a strong, fibrous investment, covered, laterally, by the Auricularis anterior and superior, by the galea aponeurotica, and by part of the Orbicularis oculi.
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The zygomatic arch is formed by the zygomatic process of temporal bone (a bone extending forward from the side of the skull, over the opening of the ear) and the temporal process of the zygomatic (the side of the cheekbone), the two being united by an oblique suture; the tendon of
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The Coronoid process (from Greek korone, "like a crow's beak") can refer to:
  • The coronoid process of the mandible, part of the ramus mandibulae of the mandible
  • The coronoid process of the ulna

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mandible (from Latin mandibūla, "jawbone") or inferior maxillary bone is, together with the maxilla, the largest and strongest bone of the face . It forms the lower jaw and holds the lower teeth in place.
..... Click the link for more information.
The temporal fascia covers the Temporalis muscle.

It is a strong, fibrous investment, covered, laterally, by the Auricularis anterior and superior, by the galea aponeurotica, and by part of the Orbicularis oculi.
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The eyebrow is an area of coarse skin hairs above the eye that follows the shape of the brow ridges.

Functions

The main function of the eyebrow is to prevent moisture, mostly salty sweat and rain, from flowing into the eye, an organ critical to sight.
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The trigeminal nerve (the fifth cranial nerve, also called the fifth nerve or simply V) is responsible for sensation in the face. It is similar to the spinal nerves C2–S5, which are responsible for sensation in the rest of the body.
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