Muscle Loctaion, Direction, Size, and Shapes CH 3 Flashcards
Pectoral Muscles
Located on the chest
Nexis Pector
Chest
Epaxial Muscles
located above the pelvic axis
Axis
Line around where rotation occurs
intercostal muscles
Located between ribs
Infraspinatus muscles
located beneath the spine of the scapula
Supraspinatus muscles
located above the spine of the scapula
Inferior (When referring to muscles)
below or deep
Medius (When referring to muscles)
Middle
Superior (when referring to muscles)
Above
Externus (depth of muscles)
Outer
Internus (depth of muscles)
Inner
Orbicularis
muscles surrounding another structure
Rectus
Straight. Rectus muscles align with the vertical axis of the body
Oblique
Slanted. Oblique muscles slant outward away from the midline
Transverse
Crosswise. Transverse muscles form crosswise to the midline.
Sphincter
Tight band. Sphincter muscles are ringlike and constrict the opening of the passageway
Biceps
Generally have two divisions (heads)
Triceps
Generally have three divisions (heads)
Quadriceps
Generally have four divisions (head)
Azygous
not paired
Zygot/o
Joined
Minimus (muscle)
Small
Maximus or Vastus (muscle)
Large
Latissinus (muscle)
Broad
longissinus or gracilis
narrow
major and minor (when referring to muscles)
used to describe larger and smaller parts
Deltoid
muscles that look like the greek letter delta Δ
quadratus
muscles are square or four sided
Rhomboideus
muscles are diamond shaped (rhomboid is a four sided figure that may have unequal adjoining sides but equal opposite sides)
Scalenus
muscles are unequally three sided ( Skalenos is greek for uneven)
Serratus
muscles are saw toothed (Serratus is latin for notched)
Teres
muscles are cylindrical (teres is latin for smooth and round or cylindrical)
Sartorius (Sahr-tor-e-uhs) Muscle
(One muscle of the thigh area) named because this muscle flexes and adducts the leg of a human to that position assumed by a tailor sitting cross legged at work (sartorius means tailor)
Gemellus
Named because it is a twined muscle (Gemellus means twin)
Gastrocnemius (Gahs-trohck-ne-me-uhs) Muscle
the leg muscle that resembles the shape of the stomach.
kneme
leg