Muscles of the Form and Expression Flashcards

1
Q

The muscular system

A

Covers, shapes, and supports the skeleton

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2
Q

The restorative artist is interested in the muscles that influence

A

Surface forms and expressions

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3
Q

Relationship with the surface

A

Bones, Muscles, fascia and glands, integument

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4
Q

These affect surface form

A

Superficial muscles

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5
Q

Constant repetition of a muscular action will leave

A

Signs

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6
Q

Contracting muscles draw this with it

A

the skin

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7
Q

Resulting surface formations

A

Prominences
Hollows
Folds
Furrows

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8
Q

Facial markings are more definite on

A

Males

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9
Q

Loss of muscular tone results in

A

Sagging of tissues

An effect on the form of the head and features

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10
Q

When standing the gravitational pull is

A

Inferior

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11
Q

When laying horizontal, the gravitational pull is

A

Lateral and Posterior

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12
Q

There may be complaints of the old looking

A

Too young

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13
Q

For every muscle pulling in one direction, another is there to

A

return it to position

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14
Q

End of the muscle is attached to a fixed point

A

Origin

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15
Q

End of the muscle attached to a moveable part or skin

A

Insertion

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16
Q

Cross the direction of muscles at 90 degree angles

A

Furrows (wrinkles)

17
Q

Over ___ muscles in the human body

A

500

18
Q

Muscles account for _____ % of total body weight

A

40-50%

19
Q

The muscles with these fibers have little strength

A

Long and few

20
Q

The muscles with these fibers are powerful

A

Short and numerous

21
Q

The fibers of these muscles are parallel and fun directly from origin to insertion

A

Quadrilateral muscles

22
Q

The fibers surround a natural orifice

A

Sphincter muscles

23
Q

The fibers which converge to a narrow insertion

A

Fan-shaped muscles

24
Q

The fibers consist of two fleshy portions which are separated by a tendon or an aponeurosis

A

Double bellied Muscles

25
Q

Occipitofrontalis Muscle

A

Covers the top and side of the skull from the occipital bone to the eyebrows
Double Bellied
Occipital belly and Frontal belly
Connected by the galea aponeurotica
Inferior furrows of the forehead are usually deeper

26
Q

Temporalis Muscle

A

A broad fan shaped muscle
Strongest of the chewing muscles
Fibers converge as they descend and end in a strong tendon which inserts in the coronoid process, part of the mandible

27
Q

Masseter Muscle

A

Means “to chew”
Raises the lower jaw
Thick quadrilateral muscle
Origin anterior 2/3 of zygomatic arch and lower border of the cheekbone
Insertion lower half of the jaw and angle of the ramus

28
Q

Muscles of the face

A

Cutaneous muscles
Lie within layers of superficial fascia
Are shorter and thinner, more active and responsive

29
Q

Obicularis Oculi

A

Sphincter Muscle
2
Surround eyes

30
Q

Crow’s feet

A

Optic facial Sulci

31
Q

Currogator

A

Frowning muscle

Draws eyebrows downward and medial

32
Q

Levator Palpebrae superioris

A

Raises the upper eyelid

May cut when unable to close the eyelid

33
Q

Muscles of the nose

A

Lower muscles affect nostrils

34
Q

Procerus

A

Fibers merge with the frontalis muscle

Draws the medial ends of the eyebrows down

35
Q

Obicularis Oris

A

Large sphincter muscle encircles the mouth

10 pairs of muscle insert into the sphincter