AP1 LAB: LAB LIST MUSCULAR SYSTEM, AP1 - JOINTS,
MOVEMENT, MUSCLE MICROANATOMY |THE SMART WAY
TO PASS | REAL TESTS, REAL RESULTS!
Buccinator Answer: cheek muscle that compresses the cheek, helping with chewing and
blowing.
Depressor anguli oris Answer: pulls the corner of the mouth downward.
Lateral pterygoid Answer: jaw muscle that helps protract and move the mandible side to side.
Medial pterygoid Answer: jaw muscle that elevates the mandible for chewing.
Masseter Answer: strong jaw muscle that elevates the mandible.
Orbicularis oculi Answer: circular muscle that closes the eyelids.
Orbicularis oris Answer: circular muscle around the mouth used to close and purse the lips.
Occipitofrontalis Answer: scalp muscle that raises eyebrows and wrinkles the forehead.
Risorius Answer: facial muscle that pulls the corner of the mouth laterally.
Temporalis Answer: jaw muscle that elevates and retracts the mandible.
Zygomaticus major Answer: facial muscle that raises the corner of the mouth for smiling.
Zygomaticus minor Answer: facial muscle that elevates the upper lip.
Digastric Answer: neck muscle with two bellies that helps open the mouth and elevate the
hyoid.
Levator scapulae Answer: muscle that elevates the scapula.
Mylohyoid Answer: floor-of-mouth muscle that elevates the hyoid and helps swallowing.
Platysma Answer: thin neck muscle that tenses the skin of the neck and depresses the mandible.
Anterior scalene Answer: neck muscle that flexes the neck and helps elevate ribs.
Middle scalene Answer: neck muscle that laterally flexes the neck and helps breathing.
Posterior scalene Answer: neck muscle that laterally flexes the neck and helps elevate ribs.
Sternocleidomastoid Answer: neck muscle that flexes and rotates the head.
Sternohyoid Answer: neck muscle that depresses the hyoid after swallowing.
Stylohyoid Answer: neck muscle that elevates and retracts the hyoid.
Diaphragm Answer: main breathing muscle that separates thoracic and abdominal cavities.
External intercostals Answer: muscles between ribs that help elevate ribs during inhalation.
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, Internal intercostals Answer: muscles between ribs that help depress ribs during forced
exhalation.
External obliques Answer: abdominal muscle that compresses the abdomen and rotates the
trunk.
Internal obliques Answer: abdominal muscle that compresses the abdomen and rotates the
trunk.
Erector spinae Answer: back muscle group that extends the vertebral column.
Latissimus dorsi Answer: broad back muscle that extends, adducts, and medially rotates the
arm.
Pectoralis major Answer: chest muscle that flexes, adducts, and medially rotates the arm.
Pectoralis minor Answer: chest muscle that stabilizes and pulls the scapula forward/down.
Serratus anterior Answer: muscle along ribs that protracts and stabilizes the scapula.
Rectus abdominis Answer: abdominal muscle that flexes the trunk.
Rhomboid major Answer: upper back muscle that retracts the scapula.
Rhomboid minor Answer: upper back muscle that retracts and stabilizes the scapula.
Transversus abdominis Answer: deep abdominal muscle that compresses abdominal contents.
Trapezius Answer: large back/neck muscle that moves and stabilizes the scapula.
Biceps brachii Answer: anterior arm muscle that flexes the elbow and supinates the forearm.
Brachialis Answer: deep arm muscle that flexes the elbow.
Coracobrachialis Answer: arm muscle that flexes and adducts the shoulder.
Deltoid Answer: shoulder muscle that abducts the arm.
Infraspinatus Answer: rotator cuff muscle below the scapular spine that laterally rotates the arm
Subscapularis Answer: rotator cuff muscle on anterior scapula that medially rotates the arm.
Supraspinatus Answer: rotator cuff muscle above the scapular spine that begins arm abduction.
Teres major Answer: shoulder muscle that extends, adducts, and medially rotates the arm.
Teres minor Answer: rotator cuff muscle that laterally rotates the arm.
Triceps brachii Answer: posterior arm muscle that extends the elbow.
Abductor pollicis longus Answer: forearm muscle that abducts and extends the thumb.
Brachioradialis Answer: forearm muscle that flexes the elbow.
Extensor carpi radialis longus Answer: extends and abducts the wrist.
APPHIA – Crafted with Care and Precision for Academic Excellence.
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MOVEMENT, MUSCLE MICROANATOMY |THE SMART WAY
TO PASS | REAL TESTS, REAL RESULTS!
Buccinator Answer: cheek muscle that compresses the cheek, helping with chewing and
blowing.
Depressor anguli oris Answer: pulls the corner of the mouth downward.
Lateral pterygoid Answer: jaw muscle that helps protract and move the mandible side to side.
Medial pterygoid Answer: jaw muscle that elevates the mandible for chewing.
Masseter Answer: strong jaw muscle that elevates the mandible.
Orbicularis oculi Answer: circular muscle that closes the eyelids.
Orbicularis oris Answer: circular muscle around the mouth used to close and purse the lips.
Occipitofrontalis Answer: scalp muscle that raises eyebrows and wrinkles the forehead.
Risorius Answer: facial muscle that pulls the corner of the mouth laterally.
Temporalis Answer: jaw muscle that elevates and retracts the mandible.
Zygomaticus major Answer: facial muscle that raises the corner of the mouth for smiling.
Zygomaticus minor Answer: facial muscle that elevates the upper lip.
Digastric Answer: neck muscle with two bellies that helps open the mouth and elevate the
hyoid.
Levator scapulae Answer: muscle that elevates the scapula.
Mylohyoid Answer: floor-of-mouth muscle that elevates the hyoid and helps swallowing.
Platysma Answer: thin neck muscle that tenses the skin of the neck and depresses the mandible.
Anterior scalene Answer: neck muscle that flexes the neck and helps elevate ribs.
Middle scalene Answer: neck muscle that laterally flexes the neck and helps breathing.
Posterior scalene Answer: neck muscle that laterally flexes the neck and helps elevate ribs.
Sternocleidomastoid Answer: neck muscle that flexes and rotates the head.
Sternohyoid Answer: neck muscle that depresses the hyoid after swallowing.
Stylohyoid Answer: neck muscle that elevates and retracts the hyoid.
Diaphragm Answer: main breathing muscle that separates thoracic and abdominal cavities.
External intercostals Answer: muscles between ribs that help elevate ribs during inhalation.
APPHIA – Crafted with Care and Precision for Academic Excellence.
1
, Internal intercostals Answer: muscles between ribs that help depress ribs during forced
exhalation.
External obliques Answer: abdominal muscle that compresses the abdomen and rotates the
trunk.
Internal obliques Answer: abdominal muscle that compresses the abdomen and rotates the
trunk.
Erector spinae Answer: back muscle group that extends the vertebral column.
Latissimus dorsi Answer: broad back muscle that extends, adducts, and medially rotates the
arm.
Pectoralis major Answer: chest muscle that flexes, adducts, and medially rotates the arm.
Pectoralis minor Answer: chest muscle that stabilizes and pulls the scapula forward/down.
Serratus anterior Answer: muscle along ribs that protracts and stabilizes the scapula.
Rectus abdominis Answer: abdominal muscle that flexes the trunk.
Rhomboid major Answer: upper back muscle that retracts the scapula.
Rhomboid minor Answer: upper back muscle that retracts and stabilizes the scapula.
Transversus abdominis Answer: deep abdominal muscle that compresses abdominal contents.
Trapezius Answer: large back/neck muscle that moves and stabilizes the scapula.
Biceps brachii Answer: anterior arm muscle that flexes the elbow and supinates the forearm.
Brachialis Answer: deep arm muscle that flexes the elbow.
Coracobrachialis Answer: arm muscle that flexes and adducts the shoulder.
Deltoid Answer: shoulder muscle that abducts the arm.
Infraspinatus Answer: rotator cuff muscle below the scapular spine that laterally rotates the arm
Subscapularis Answer: rotator cuff muscle on anterior scapula that medially rotates the arm.
Supraspinatus Answer: rotator cuff muscle above the scapular spine that begins arm abduction.
Teres major Answer: shoulder muscle that extends, adducts, and medially rotates the arm.
Teres minor Answer: rotator cuff muscle that laterally rotates the arm.
Triceps brachii Answer: posterior arm muscle that extends the elbow.
Abductor pollicis longus Answer: forearm muscle that abducts and extends the thumb.
Brachioradialis Answer: forearm muscle that flexes the elbow.
Extensor carpi radialis longus Answer: extends and abducts the wrist.
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