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WorksheetsMuscles Lab 3
Total questions: 42
Worksheet time: 32mins
A muscle contraction that is mostly responsible for producing a particular movement
prime movers (Agonists)
synergists
Antagonists
Fixators
A muscle whose action opposes that of a particular agonist or prime mover?
Agonist (Prime mover)
Antagonist
Fixator
Synergist
A synergist that assists an agonist by preventing movement at another joint, thereby stabilizing the origin of the agonist?
Fixator
Agonist (Prime mover)
Synergist
Antagonist
What helps a larger agonist work efficiently or stabilize the point of origin?
Antagonist
Fixator
Synergist
Agonist (prime mover)
What classifies a muscle?
Specific Body Regions
Position, direction, or fascicle arrangement.
Structural Characteristics of the Muscle
Actions
Cells
Action- Raises the eyebrows; wrinkles the skin of the forehead
Origin- Occipital bone by way of Galea Aponeurosis
Insertion- Skin of eyebrows and bridge of nose
(a)
Action- Closes the eye
Origin- Frontal and Maxillary bones, margin of orbit
Insertion- Skin around the eye; circles the orbit
(a)
Action- Raises lateral corners of mouth upward (smile)
Origin- Zygomatic bone
Insertion- Skin and muscles about the angle of the mouth
(a)
Action- Closes and protrudes the lips (Kissing action)
Origin- Maxilla and Mandible
Insertion- Skin surrounding the mouth, lips
Orbicularis Oris
Orbicularis Oculi
Buccinator
Zygomaticus major
Action- Compresses cheek; pulls corner of the mouth laterally
Origin- Mandible and Maxillary bone
Insertion- Orbicularis oris and skin at the angle of the mouth
(a)
Action- Depresses the Mandible; draws the angle of the mouth downward; tightens skin of neck.
Origin- Fascia of the upper chest
Insertion- Mandible and skin and cheek
(a)
Action- Raises the mandible; prime mover of closing the jaw
Origon- Zygomatic arch; maxilla
Insertion- Mandible
(a)
Action- Raises the mandible; closing the jaw
Origin- Temporal Bone
Insertion- Coronoid process of the mandible
Zygomatic Bone
Temporalis
Masseter
Orbicularis Oculi
Action- Pulls head to one side, pulls head toward chest, or raises sternum
Origin- Manubrium of the sternum and clavicle
Insertion- Mastoid process of temporal bone
Sternocleidomastoid
Frontalis
Platysma
Masseter
Insertion- Skin of eyebrows and bridge of nose
Buccinator
Masseter
Frontalis
Platysma
Insertion- mastoid process of temporal bone
Zygomaticus major
Masseter
Sternocleidomastoid
Orbicularis oris
Origin- Manubrium of the sternum and clavicle
(a)
Action- Pulls head to one side, pulls head toward chest, or raise sternum.
Platysma
Frontalis
Bucinnator
Sternocleidomastoid
Action- raises the mandible, closing the jaw
Masseter
Orbicularis oculi
Temporalis
Buccinator
Origin- Temporal Bone
Frontalis
Buccinator
Masseter
Temporalis
Insertion- Coronoid process of the mandible
(a)
Action- Raises the mandible, closing the jaw; Prime mover
(a)
Origin- Zygomatic arch; maxilla
(a)
Insertion- Mandible
Frontalis
Masseter
Zygomatic major
Platysma
Action- Raises the eyebrows, wrinkles the skin of the forehead
Epicranius (frontal belly)
Masseter
Buccinator
Frontalis
Origin- Occipital bone by way of Galea Aponeurosis
Frontalis
Platysma
Orbicularis oculi
Masseter
Insertion- Skin of eyebrows and bridge of nose
(a)
Action- Closes the eye
(a)
Insertion- Frontal and Maxillary bones, margin of orbit
Platysma
Zygomaticus major
Frontalis
Orbicularis oculi
Origin- Frontal and Maxillary bones, margin of orbit
(a)
Action- Compresses cheek, pulls corner of laterally
(a)
Insertion- Orbicularis oris and skin at the angle of the mouth
(a)
Origin- Mandible and Maxillary bone
(a)
Insertion- Mandible and skin and cheek
Platysma
Buccinator
Temporalis
Frontalis
Origin- Fascia of the upper chest
(a)
Action- Depresses the mandible; draws the angle of the mouth downward; tightens skin of neck
(a)
Action- Raises lateral corners of mouth upward (smile)
Buccinator
Zygomaticus major
Platysma
Temporalis
Origin- Zygomatic Bone
Zygomatic major
Frontalis
Buccinator
Temporalis
Insertion- Skin and muscles about the angle of the mouth
(a)
Action- Closes and protrudes the lips (Kissing action)
Buccinator
Orbicularis Oris
Platysma
Orbicularis Oculi
Origin- Maxilla and Mandible
(a)
Insertion- Skin surrounding the mouth, lips
(a)
