BIOS252 WEEK 7 EXAM ACTUAL TEST SCRIPT
2026 COMPLETE QUESTIONS AND ANSWERS
GRADED A+
◉ sarcomere structure. Answer:
◉ Troponin-Tropomyosin Complex. Answer:
◉ Triad. Answer:
◉ Neuromuscular Junction. Answer: point of contact between a
motor neuron and a skeletal muscle cell
◉ Mucle histology. Answer:
◉ Occipitofrontalis. Answer: Action: raises eyebrows and wrinkles
forehead; moves scalp; Innervation: Fascial (VII) nerve
◉ Obicularis Oris. Answer: Origin: Muscle fibers surronding the
opening of the mouth
Insertion: Skin at the corner of the mouth
,Action: closes and protrudes lips (kissing muscle) Innervation:
Fascial Nerve (VII)
◉ Zygomaticus Major. Answer: Origin: Zygomatic Bone
Insertion: SKin at angle of mouth
Action: retracts and elevates corner of mouth(SMiling) Innervation:
(Fascial (VII) Nerve)
◉ Zygomaticus Minor. Answer: Origin: Zygomatic Bone
Insertion: Upper Lip
Action: retracts and elevates upper lip Expose Teeth: Innervation:
Facial Nerve (VII)
◉ Orbicularis Oculi. Answer: Origin: Medial wall of orbit
Insertion: Circular path around orbit
Action: Closes eyelids; used in blinking, winking, and squinting;
Innervation: Facial Nerve VII
◉ corrugator Supercillii. Answer: Origin: Frontal bone
Insertion: Skin of eyebrow
Action: Draws eyebrows together; wrinkles forehead: Frowning
Fascial Nerve (VII)
,◉ superior rectus. Answer: Origin: Common tendinous ring
Insertion: Superior central part of eyeball
Action: elevates eye and turns it medially
Innervation: (oculomotor III)
◉ inferior Rectus. Answer: Origin:Common tendinous ring
Insertion: Inferrior and central part of eyeball
Action: depresses eye and turns it medially
Innervation:(oculomotor III)
◉ lateral rectus. Answer: moves eye laterally (abducens VI)
◉ medical rectus. Answer: Origin: Common tendinous ring
Insertion: Medical side of the eyeball
Action: moves eye medially
Innervation: (Occulomotor III)
◉ superior Oblique. Answer: Origin: Sphenoid bone; superior and
medial to common tendinous ring in the orbit
Insertion: Attaches to tendon that passes through the trochlea
Action: moves eye inferiorly and laterally
Innervation: (Trochlear IV)
, ◉ inferior oblique. Answer: Origin: Maxilla in the floor of orbit
Insertion: Eyeballs between inferior and lateral recti
Action: rotates the eye upward and away from the midline
Innervation: (Occulomotor III)
◉ levator palpebrae. Answer: Origin: Roof of Orbit
Insertion: Skin and tarsal plate of upper eyelids
Action: elevates upper eyelid
Innervation: (Occulomotor III)
◉ Platysma. Answer: Action: Elevates Hyoid bone and draws it
posteriorly Draws down the lower lip and angles of the mouth;
tenses skin of the neck; helps depress mandible
◉ Mylohyoid. Answer: Action: Elevates floor of mouth and hyoid
during swallowing
◉ Sternocleidomastoid. Answer: Action: Flexes and laterally rotates
the head flex cervical spine
Innervation: (Accessory XI)
2026 COMPLETE QUESTIONS AND ANSWERS
GRADED A+
◉ sarcomere structure. Answer:
◉ Troponin-Tropomyosin Complex. Answer:
◉ Triad. Answer:
◉ Neuromuscular Junction. Answer: point of contact between a
motor neuron and a skeletal muscle cell
◉ Mucle histology. Answer:
◉ Occipitofrontalis. Answer: Action: raises eyebrows and wrinkles
forehead; moves scalp; Innervation: Fascial (VII) nerve
◉ Obicularis Oris. Answer: Origin: Muscle fibers surronding the
opening of the mouth
Insertion: Skin at the corner of the mouth
,Action: closes and protrudes lips (kissing muscle) Innervation:
Fascial Nerve (VII)
◉ Zygomaticus Major. Answer: Origin: Zygomatic Bone
Insertion: SKin at angle of mouth
Action: retracts and elevates corner of mouth(SMiling) Innervation:
(Fascial (VII) Nerve)
◉ Zygomaticus Minor. Answer: Origin: Zygomatic Bone
Insertion: Upper Lip
Action: retracts and elevates upper lip Expose Teeth: Innervation:
Facial Nerve (VII)
◉ Orbicularis Oculi. Answer: Origin: Medial wall of orbit
Insertion: Circular path around orbit
Action: Closes eyelids; used in blinking, winking, and squinting;
Innervation: Facial Nerve VII
◉ corrugator Supercillii. Answer: Origin: Frontal bone
Insertion: Skin of eyebrow
Action: Draws eyebrows together; wrinkles forehead: Frowning
Fascial Nerve (VII)
,◉ superior rectus. Answer: Origin: Common tendinous ring
Insertion: Superior central part of eyeball
Action: elevates eye and turns it medially
Innervation: (oculomotor III)
◉ inferior Rectus. Answer: Origin:Common tendinous ring
Insertion: Inferrior and central part of eyeball
Action: depresses eye and turns it medially
Innervation:(oculomotor III)
◉ lateral rectus. Answer: moves eye laterally (abducens VI)
◉ medical rectus. Answer: Origin: Common tendinous ring
Insertion: Medical side of the eyeball
Action: moves eye medially
Innervation: (Occulomotor III)
◉ superior Oblique. Answer: Origin: Sphenoid bone; superior and
medial to common tendinous ring in the orbit
Insertion: Attaches to tendon that passes through the trochlea
Action: moves eye inferiorly and laterally
Innervation: (Trochlear IV)
, ◉ inferior oblique. Answer: Origin: Maxilla in the floor of orbit
Insertion: Eyeballs between inferior and lateral recti
Action: rotates the eye upward and away from the midline
Innervation: (Occulomotor III)
◉ levator palpebrae. Answer: Origin: Roof of Orbit
Insertion: Skin and tarsal plate of upper eyelids
Action: elevates upper eyelid
Innervation: (Occulomotor III)
◉ Platysma. Answer: Action: Elevates Hyoid bone and draws it
posteriorly Draws down the lower lip and angles of the mouth;
tenses skin of the neck; helps depress mandible
◉ Mylohyoid. Answer: Action: Elevates floor of mouth and hyoid
during swallowing
◉ Sternocleidomastoid. Answer: Action: Flexes and laterally rotates
the head flex cervical spine
Innervation: (Accessory XI)
