BIOS 252 Lab Practicum Questions And
All Correct Answers.
Anterior Scalene - Answer Origin: Anterior Tubercles of the transverse processes of
C3,C4,C5,C6
Insertion:1st rib
Action: Laterally flexes neck and lifts 1st rib
Innervation: (Cervical Spinal Nerves)
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
,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)
, 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)
Middle Scalene - Answer Origin: Transverse process C3,C4,C5,C6,C7
Insertion: 1 st rib
Action: Laterally flexes neck and lifts 1st rib
Innervation: (Cervical Spinal Nerves)
Posterior Scalene - Answer Origin: Transcerse Process C4,C5,C6
Insertion: 2nd rib
Action: Laterally rotates neck and lifts 2nd rib
Innervation: Cervical Spinal Nerve
rectus abdominis - Answer Action: flexes vertebral column
Innervation: (T7-T12)
external oblique - Answer Action: flexes and rotates vertebral column
Innervation: (T7-T12)
All Correct Answers.
Anterior Scalene - Answer Origin: Anterior Tubercles of the transverse processes of
C3,C4,C5,C6
Insertion:1st rib
Action: Laterally flexes neck and lifts 1st rib
Innervation: (Cervical Spinal Nerves)
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
,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)
, 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)
Middle Scalene - Answer Origin: Transverse process C3,C4,C5,C6,C7
Insertion: 1 st rib
Action: Laterally flexes neck and lifts 1st rib
Innervation: (Cervical Spinal Nerves)
Posterior Scalene - Answer Origin: Transcerse Process C4,C5,C6
Insertion: 2nd rib
Action: Laterally rotates neck and lifts 2nd rib
Innervation: Cervical Spinal Nerve
rectus abdominis - Answer Action: flexes vertebral column
Innervation: (T7-T12)
external oblique - Answer Action: flexes and rotates vertebral column
Innervation: (T7-T12)
