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17 Cards in this Set

  • Front
  • Back
  • 3rd side (hint)
suprahyoid muscles
digastric, stylohyoid, mylohyoid, geniohyoid
d, s, m, g
infrahyoid muscles
sternohyoid, sternothyroid, omohyoid, thyrohyoid
s, s, o, t
digastric
O=ant.-lower margin of mandible; post.-mastoid
I=loop of connective tissue to hyoid
A=elevate hyoid & steady it during swallowing & speech; acting from behind they open mouth and depress mandible
N=ant.-CN V; post.-CN VII
elevates...steadies...
stylohyoid
O=styloid of temoral bone
I=hyoid
A=elevates & retracts hyoid; elongates floor of mouth during swallowing
N=CN VII
elongates...
mylohyoid
O=medial surface of mandible
I=hyoid & median raphe
A=elevates hyoid & floor of mouth enabling tongue to exert backward & upward pressure that forces food bolus in pharynx
N=CN V (mandibular branch)
food bolus
geniohyoid
O=inner surface of mandible
I=hyoid
A=pulls hyoid superiorly & anteriorly, shortening floor of mouth & widening pharynx for receiving food during swallowing
N=C1 via CN XII
receiving food
sternohyoid
O=manubrium & med. end of clavicle
I=lower margin of hyoid
A=depresses larynx and hyoid if mandible is fixed; may also flex skull
N=C1-C3
depresses...fexes...
sternothyroid
O=post. surface of manubrium
I=thyroid cartilage
A=pulls thyroid cartilage (plus larynx & hyoid) inferiorly
N=C1-C3
pulls thyroid cartilage...
omohyoid
O=sup. surface of scapula
I=lower border of hyoid
A=depresses & retracts hyoid
N=C1-C3
depresses...
thyrohyoid
O=thyroid cartilage
I=hyoid
A=depresses hyoid & elevates thyroid cartilage
N=C1 via CN XII
depresses hyoid and elevates...
superior pharyngeal constrictor
O=ant. to mandible & med. to pterygoid
I=post. median raphe of pharynx
A=constricts pharynx during swallowing, which propels food bolus to esophagus
N=pharyngeal plexus (CN IX & X)
during swallowing
middle pharyngeal constrictor
O=hyoid
I=post. median raphe of pharynx
A=constricts pharynx during swallowing, which propels food bolus to esophagus
N=pharyngeal plexus (CN IX & X)
during swallowing
inferior pharyngeal constrictor
O=laryngeal cartilages
I=post. median raphe of pharynx
A=constricts pharynx during swallowing, which propels food bolus to esophagus
N=pharyngeal plexus (CN IX & X)
during swallowing
sternocleidomastoid
O=manubrium & med. clavicle
I=lat. surface of mastoid process
A=prime mover of active head flexion; acting alone, rotates head toward shoulder on opposite side & tilts or lat. flexes to its own side
N=CN XI
moves head and shoulders
scalenes (ant., middle, and post.)
O=transverse process of cerv. vertebrae
I=anterolaterally on first 2 ribs
A=elevates first two ribs (aid in inspiration); may be important in coughing; flex and rotate neck
N=cervical nerves
inspiration
splenius capitis
O=spinous processes of C7-T6
I=mastoid process of temporal bone & occipital bone
A=extends & hyperextends head; when muscles on one side are activated, head is rotated and bent laterally toward same side
N=cervical spinal nerves (dorsal rami)
moves head
splenius cervicis
O=spinous processes of T3-T6
I=transverse processes of C2-C4
A=extends & hyperextends head; when muscles on one side are activated, head is rotated and bent laterally toward same side
N=cervical spinal nerves (dorsal rami)
moves head