head muscles

Question 1

what is Occipitofrontalis muscle

Answer 1

• Is a flat digastric muscle, with occipital and frontal bellies
• A- elevate the eyebrows and produce transverse wrinkles across the forehead

Question 2

what are the two orbital groups?

Answer 2

Orbicularis Oculi
Corrugator supercili

Question 3

what is Orbicularis Oculi

Answer 3

• Is a large muscle that surrounds each orbital orifice
  and extends into each eyelid.
• It closes the eyelids

Question 4

what is Corrugator supercili

Answer 4

Deep to the eyebrows and the orbicularis oculi muscle
and is active when frowning

Question 5

what is the procerus in nasal group?

Answer 5

• A small muscle superficial
  to the nasal bone
• active when an individual
  frowns

Question 6

what is nasalis in nasal group?

Answer 6

It consists of a transverse part (the compressor naris) and an alar part (the dilator naris)

Question 7

what is orbicularis oris in oral group?

Answer 7

• A sphincter muscle that encircles the mouth within the lips
• Contraction of this muscle narrows the mouth and closes the lips

Question 8

what is buccinator in oral group

Answer 8

• It is in the space between the mandible and the maxilla, deep to the other facial muscles in the area
• Compresses the check; helps keep food between grinding surfaces of teeth

Question 9

what is risorius in upper group of oral muscles?

Answer 9

• It is a thin, superficial muscle that extends laterally from the corner of the mouth
• Helps produce a grin

Question 10

label the correct upper group oral muscles

Zygomaticus major
zygomaticus minor
Levator labii superioris
levator anguli oris

Answer 10

Question 11

label the lower group of oral muscles

Depressor anguli oris
Depressor labii inferioris
Mentalis

Answer 11

Question 12

what is platysma?

Answer 12

• is a large, thin sheet of muscle in the superficial fascia of the neck.
• It arises from the upper part of the thorax and ascends through the neck to the mandible