- Size: Vastus / Maximus — Large muscles
- Size: Longus — Long muscles
- Size: Minimus / Brevis — Small muscles
- Shape: Deltoid — Triangular shape
- Shape: Teres — Round shape
- Shape: Trapezius — Trapezoid shape
- Direction of Fibers: Transverse — Fibers run horizontally
- Direction of Fibers: Rectus — Fibers run straight (parallel to midline)
- Direction of Fibers: Oblique — Fibers run diagonally
- Direction of Fibers: Orbicularis — Circular fibers
- Location: Pectoralis — Located in the chest
- Location: Gluteus — Located in the buttocks
- Location: Infra / Sub — Located below or under another structure
- Location: Supra — Located above another structure
- Location: Lateralis — Located on the side
- Number of Origins: Biceps — Two origins
- Number of Origins: Triceps — Three origins
- Origin and Insertion: Sternocleidomastoid — Originates from sternum and clavicle, inserts into mastoid process
- Origin and Insertion: Brachioradialis — Originates from humerus, inserts into radius
- Action: Flexor — Decreases joint angle
- Action: Extensor — Increases joint angle
- Action: Adductor — Moves limb toward midline
- Action: Abductor — Moves limb away from midline
Parent Tip: Review the logic above to help your child master the concept of biology corner worksheet.
