EXSC-223- Lab final Exam with
Complete Solutions 2026 Updated.
Occipitofrontalis (Epicranius) - Answer Action: Draws the scalp posteriorly
Corrugator supercilii - Answer Draws eyebrows down and medially
Levator palpebrae superioris - Answer Elevates and retracts the eyelids
Orbicularis oculi - Answer Closes the eyelids
Orbicularis oris - Answer Superfical: closes lips and protrudes lips. Deep: presses lips agaisnt
teeth
Levator labii superioris - Answer Raises upper lip and moves it forward
Depressor labii inferioris - Answer Draws lower lip inferior and laterally
Levator anguli oris - Answer Raises angle of mouth
Depressor anguli oris - Answer Draws angle of mouth downward and latterallly
Buccinator - Answer Compresses cheeks during mastication
Risorius - Answer Retracts the angle of the mouth
Platysma - Answer Depresses the lower jaw
Superior Rectus - Answer Adducts, elevates, and internally rotates the eye
Inferior Rectus - Answer Depresses, exorts, and addcuts the eyeball
Medial Rectus - Answer Abducts and moves eye meidally
Lateral Rectus - Answer Abducts and moves eye latterally
, Superior Oblique - Answer Medially rotates the eye (intorsion)
Inferior Oblique - Answer Laterally rotates the eye (extorsion)
Deep masseter - Answer Raises the mandible against the maxillae with great force
Superficial masseter - Answer Raises the mandible against the maxible with great force
Temporalis - Answer Elevates and retracts the mandible against the maxiilae with great force
Hyoglossus - Answer Depresses the tongue
Styloglossus - Answer Draws the sides of the tongue upwards and the tongue back
Sternocleidomastoid - Answer Draws head towards shoulder of same side, rotates head to
opposite side, flexes cervical part of vertebral column, assists in elevating the throax
Scalenes - Answer Elevates the first and second ribs, bends the spinal column laterally
tongue - Answer •- Manipulates food, assists in swallowing and speech production
Psoas Major: - Answer Action - Flex the hip, flexes the spine (trunk) when the femur is fixed
Hip Flexion = Angle between hip & femur decreases (ex: lifting your leg up)
Origin - Transverse processes & bodies of L1-L5, intervertebral fibrocartilages of T12-L5
Insertion - Lesser trochanter of femur
Psoas Minor: - Answer Action - Flex the spine
Spinal Flexion = Angle between spine & hip decreases (ex: taking a bow)
Origin - Lateral sides of the bodies & intervertebral discs of T12-L1
Insertion - Pectineal line, iliopectineal eminence, iliac fascia
Illacus: - Answer Action - Flex the hip, flexes the spine when the femur is fixed
Origin - Upper majority of the iliac fossa
Insertion - Lesser trochanter of femur
Complete Solutions 2026 Updated.
Occipitofrontalis (Epicranius) - Answer Action: Draws the scalp posteriorly
Corrugator supercilii - Answer Draws eyebrows down and medially
Levator palpebrae superioris - Answer Elevates and retracts the eyelids
Orbicularis oculi - Answer Closes the eyelids
Orbicularis oris - Answer Superfical: closes lips and protrudes lips. Deep: presses lips agaisnt
teeth
Levator labii superioris - Answer Raises upper lip and moves it forward
Depressor labii inferioris - Answer Draws lower lip inferior and laterally
Levator anguli oris - Answer Raises angle of mouth
Depressor anguli oris - Answer Draws angle of mouth downward and latterallly
Buccinator - Answer Compresses cheeks during mastication
Risorius - Answer Retracts the angle of the mouth
Platysma - Answer Depresses the lower jaw
Superior Rectus - Answer Adducts, elevates, and internally rotates the eye
Inferior Rectus - Answer Depresses, exorts, and addcuts the eyeball
Medial Rectus - Answer Abducts and moves eye meidally
Lateral Rectus - Answer Abducts and moves eye latterally
, Superior Oblique - Answer Medially rotates the eye (intorsion)
Inferior Oblique - Answer Laterally rotates the eye (extorsion)
Deep masseter - Answer Raises the mandible against the maxillae with great force
Superficial masseter - Answer Raises the mandible against the maxible with great force
Temporalis - Answer Elevates and retracts the mandible against the maxiilae with great force
Hyoglossus - Answer Depresses the tongue
Styloglossus - Answer Draws the sides of the tongue upwards and the tongue back
Sternocleidomastoid - Answer Draws head towards shoulder of same side, rotates head to
opposite side, flexes cervical part of vertebral column, assists in elevating the throax
Scalenes - Answer Elevates the first and second ribs, bends the spinal column laterally
tongue - Answer •- Manipulates food, assists in swallowing and speech production
Psoas Major: - Answer Action - Flex the hip, flexes the spine (trunk) when the femur is fixed
Hip Flexion = Angle between hip & femur decreases (ex: lifting your leg up)
Origin - Transverse processes & bodies of L1-L5, intervertebral fibrocartilages of T12-L5
Insertion - Lesser trochanter of femur
Psoas Minor: - Answer Action - Flex the spine
Spinal Flexion = Angle between spine & hip decreases (ex: taking a bow)
Origin - Lateral sides of the bodies & intervertebral discs of T12-L1
Insertion - Pectineal line, iliopectineal eminence, iliac fascia
Illacus: - Answer Action - Flex the hip, flexes the spine when the femur is fixed
Origin - Upper majority of the iliac fossa
Insertion - Lesser trochanter of femur
