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BIOL 319 - Lab 7

QuestionAnswer
Frontalis - Action Raises eyebrows
Orbicularis oculi - Action Blinking and squinting
Zygomaticus - Action Raises lateral corners of mouth upward
Levator labii superioris - Action Raises upper lip
Depressor labii inferioris - Action Draws lower lip down
Orbicularis oris - Action Closes and protrudes lips
Masseter - Action Elevates mandible
Masseter - Origin Zygomatic arch and maxilla
Masseter - Insertion Angle and ramus of mandible
Temporalis - Action Elevates and retracts mandible
Temporalis - Origin Temporal fossa
Temporalis - Insertion Coronoid process of mandible
Digastric - Action Elevates hyoid bone
Digastric - Origin Lower margin of mandible; mastoid process of temporal bone
Digastric - Insertion Hyoid bone
Stylohyoid - Action Elevates and retracts hyoid
Stylohyoid - Origin Styloid process of temporal bone
Stylohyoid - Insertion Hyoid bone
Mylohyoid - Action Elevates hyoid bone and floor of mouth
Mylohyoid - Origin Medial surface of mandible
Mylohyoid - Insertion Hyoid bone
Sternohyoid - Action Depresses larynx and hyoid bone
Sternohyoid - Origin Manubrium, medial end of clavicle
Sternohyoid - Insertion Lower margin of hyoid bone
Sternothyroid - Action Pulls larynx and hyoid bone inferiorly
Sternothyroid - Origin Posterior surface of manubrium
Sternothyroid - Insertion Thyroid cartilage
Thyrohyoid - Action Depresses hyoid, elevates larynx
Thyrohyoid - Origin Thyroid cartilage
Thyrohyoid - Insertion Hyoid bone
Pharyngeal constrictor muscles - Action Constricts pharynx
Pharyngeal constrictor muscles - Origin Mandible; sphenoid; hyoid
Pharyngeal constrictor muscles - Insertion Posterior pharynx
Sternocleidomastoid - Action Flexes head
Sternocleidomastoid - Origin Manubrium; medial clavicle
Sternocleidomastoid - Insertion Mastoid process of temporal bone; superior nuchal line of occipital bone
Trapezius - Action Stablizes, raises, retracts, rotates scapula
Trapezius - Origin Occipital bone; ligamentum nuchae; spines of C7-T12
Trapezius - Insertion Acromion, spine of scapula; lateral 1/3 clavicle
Levator scapulae ventralis - Action Elevates scapula
Levator scapulae ventralis - Origin Transverse processes C1-4
Levator scapulae ventralis - Insertion Medial border of scapula
Deltoid - Action Abducts arm
Deltoid - Origin Acromion, spine of scapula; lateral 1/3 clavicle
Deltoid - Insertion Deltoid tuberosity of humerus
Triceps brachii, long head - Action Extends forearm
Triceps brachii, long head - Origin Infraglenoid tubercle of scapula
Triceps brachii, long head - Insertion Olecranon process of ulna
Triceps brachii, lateral head - Action Extends forearm
Triceps brachii, lateral head - Origin Posterior shaft of humerus
Triceps brachii, lateral head - Insertion Olecranon process of ulna
Extensor digitorum - Action Extends fingers
Extensor digitorum - Origin Common extensor tendon
Extensor digitorum - Insertion Distal phalanges 2-5
Extensor carpi ulnaris - Action Extends wrist
Extensor carpi ulnaris - Origin Common extensor tendon
Extensor carpi ulnaris - Insertion Base of medial # metacarpal
Medial pterygoid - Action Elevates and protrudes mandible
Medial pterygoid - Origin Pterygoid process of the sphenoid bone
Medial pterygoid - Insertion Medial surface of mandible near angle
Lateral pterygoid - Action Protrudes mandible
Lateral pterygoid - Origin Pterygoid process of the sphenoid bone
Lateral pterygoid - Insertion Mandibular condyle
Buccinator - Action Draws corner of mouth laterally
Buccinator - Origin Maxilla and mandible
Buccinator - Insertion Orbicularis oris
Genioglossus - Action Protrudes tongue
Genioglossus - Origin Internal surface of mandibular symphysis
Genioglossus - Insertion Inferior tongue; body of hyoid
Hyoglossus - Action Depresses tongue
Hyoglossus - Origin Hyoid bone
Hyoglossus - Insertion Inferolateral tongue
Styloglossus - Action Retracts tongue
Styloglossus - Origin Styloid process of temporal bone
Styloglossus - Insertion Inferolateral tongue
Occipitalis - Action Pulls scalp posteriorly
Geniohyoid - Action Pulls hyoid bone superiorly
Geniohyoid - Origin Mandibular symphysis
Geniohyoid - Insertion Hyoid bone
Created by: apeoples13
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