minimum list Flashcards
(44 cards)
the place where the fixed end attaches to a bone, cartilage, or connective tissue (typically stationary, where the muscle begins)
Origins
the site where the moveable end attaches to another structure (typically moveable, where the muscle ends)
Insertion
Skeletal muscles are named by
Muscle Location
Muscle Shape
Muscle Size
Muscle Location
bone or body region
Muscle Shape
deltoid = triangle
Muscle Size
maximus = largest
brevis = short
the direction in which muscle fibers run in reference to an imaginary line, usually the midline of the body or the longitudinal axis of limbs
Direction of Fibers
Number of Origins: example,
biceps brachii has two origins
when named by attachment sites e.g., points of origins and insertions, origins are always written first; example: sternocleidomastoid
Location of the Attachments
named for the movement they produce; example: adductor, flexor, extensor
Muscle Action
Muscles of Facial Expression
Buccinator
Orbicularis oris
Risorius
Eye muscle
Orbicularis oculi
Muscles of Mastication
Masseter
Temporalis
Pterygoids
Neck muscle
Platysma
Anterior Muscles of the Neck *
Digastric
Mylohyoid
Sternohyoid
Omohyoid
Anterior Muscles of the Neck
Sternothyroid
Stylohyoid
Thyrohyoid
Sternocleidomastoid
Compress underlying structures or rotate the vertebral column
Oblique Group
Cervical Region
Scalenes
Thoracic Region
External intercostals
Internal intercostals
Abdominal Region
External Oblique
Internal Oblique
Transversus Abdominis
flexors of the vertebral column, acting in opposition to the erector spinae
Rectus Group
Muscles that position the Pectoral Girdle*
Levator scapulae
Pectoralis minor
Rhomboid major
Muscles that position the Pectoral Girdle
Rhomboid minor
Serratus anterior
Trapezius
Muscles that move the Arm
Deltoid
Supraspinatus
Subscapularis
