Muscles of the Head and Neck Flashcards
Proximal Attachment of Temporalis
Temporal Fossa of Skull
Distal Attachment of Temporalis
Coronoid Process of Mandible
Action of Temporalis
Elevates and Retracts Mandible
Proximal Attachment of Frontalis
Cranial Aponeurosis
Distal Attachment of Frontalis
Skin of Forehead
Action of Frontalis
Raises eyebrows and skin of forehead
Proximal Attachment of Masseter
Zygomatic Arch
Distal Attachment of Masseter
Ramus of Mandible
Action of Masseter
Elevates Mandible
Proximal Attachment of Sternocleidomastoid
Medial portion of clavical/top of sternum
Distal Attachment of Sternoclidomastoid
Mastoid process of skull
Action of Sternocleidomastoid (Unilateral contraction)
Contralateral rotation of cervical, ipsilateral cervical flexion
Action of Sternocliedomastoid (Bilateral contraction)
Cervical flexion, elevation of sternum and assists in forced inhalation
Proximal Attachment of Splenius Capitus
Spinous processes of vertebrae C7-T3, nuchal ligament
Distal Attachment of Splenius Capitus
Lateral superior nuchal line of occipital bone, mastoid process of temporal bone
Process
Any projection or bump on a bone
Ramus
An extension of a bone making an angle to the rest of the structure
Trochanter
A large, rough projection of bone
Tuberosity
A Rough projection of bone
Tubercle
A small, rounded projection of bone
Crest
A prominent ridge of bone
Line
A low ridge of bone
Spine
A pointed process
Head
The expanded, articular head of an epiphysis
Neck
The narrower connection between the epiphysis and diaphysis
Condyle
A smooth, rounded, articular process
Trochlea
A smooth, grooved, articular process shaped like a pulley
Facet
A small, flat articular surface
Fossa
A shallow depression in bone
Sculus
A narrow groove in bone
Foramen
A narrow passageway in bone for blood vessels and nerves
Fissure
An elongated cleft in bone
Meatus or Canal
A passageway through the substance of a bone
Sinus or Antrum
A chamber within a bone, normally filled with air
Action of Splenius Capitus (Unilateral)
lateral flexion of the head and neck and ispilateral rotation of the head
Action of Splenius Capitus (Bilateral)
Extension of the head and cervical spine
Cartilage
Soft, gel-like padding between bones that protects joints
Epiphysis
Enlarged, wide end of a long bone
Diaphysis
Shaft of long bone
Tendon
A cord of strong, flexible tissue that connects muscle belly to bone
Ligament
Very tough band of tissue that connects bone to bone and provides stability to joints within the body
Metaphysis
Region between diaphysis and epiphysis
Epiphysial line
In adults, point of fusion between epiphysis and metaphysis
Periosteum
connective tissue that surrounds the external bone surface
Medullary cavity
the hollow space within the diaphysis that contains fatty yellow marrow in adults.
Endosteum
a thin connective tissue membrane that lines the medullary cavity.
Osteocyte
Mature bone cell
Osteoblast
These cells are responsible for the production of new, healthy bone tissue - a process called Osteogenesis.
Osteoclast
Osteoclasts resorb damaged or old bone cells during periods of growth or repair. They are also crucial in returning Calcium from bone to the bloodstream.
Osteogenic Cell
These cells are a type of stem cell that can differentiate to form Osteoblasts. The ability to produce additional Osteoblasts becomes important when bone is cracked or broken
Concentric contraction
Shortening contraction of a muscle
Eccentric Contraction
Lengthening contraction of a muscle
Isometric Contraction
Static contraction of a muscle
Proximal Attachment of Superior trapezius
Medial third of the superior nuchal line, external occipital protuberance, nuchal ligament
Distal Attachment of Superior Trapezius
Lateral Clavicle
Action of Superior Trapezius
Elevates scapula, extension & lateral flexion of neck
Proximal Attachment of Middle Trapezius
T1-T12 Vertebrae (Spinous Processes)
Proximal Attachment of Inferior Trapezius
T1-T12 Vertebrae (Spinous Processes)
Distal Attachment of Middle Trapezius
Acromion Process of Scapula
Distal Attachment of Inferior Trapezius
Spine of Scapula
Action of Middle Trapezius
Retracts Scapula
Action of Inferior Trapezius
Depresses Scapula
Proximal Attachment of Levator Scapula
Transverse Processes C1 - C4
Distal Attachment of Levator Scapula
Superior Angle of Scapula
Action of Levator Scapula
Elevates Scapula. Lateral Flexion and Extension of neck.
Proximal Attachment of Rhomboids Major
Spinous process of vertebrae T2-T5
Distal Attachment of Rhomboids Major
Medial border of scapula
Action of Rhomboids Major
Draws scapula superomedially, Rotates glenoid cavity inferiorly; Supports position of scapula
Proximal Attachment of Rhomboids Minor
Nuchal ligament, Spinous processes of vertebrae C7-T1
Distal Attachment of Rhomboids Minor
Medial spine of scapula
Action or Rhomboids Minor
Draws scapula superomedially, Rotates glenoid cavity inferiorly; Supports position of scapula