Create
Learn
Share

Anatomy Ch. 11, Muscular Sys.

rename
hrdcorhrvivor's version from 2017-03-16 23:12

Section 1

Question Answer
orginattachment of tendon to stationary bone
insertionattachment of tendon to movable bone
actionmain movements that occur during contraction
fascicle arrangementparallel, fusiform, circular, triangular, pennate
parallel musclesternohyoid
fusiform muscledigastric
circular muscleorbicularis oris
triangular musclepectoralis major
pennate muscleextensor digitorum longus
longer fibers creategreater motion
what does muscle power depend on?total cross sectional area not length
which 2 types of muscle offer more power?unipennate and bipennate
which type of muscle offers more range of motion?parallel
agonistresponsible for the action
antagoniststretches and yields to the effects of agonist
synergistscontract and stabilize intermediate joints (flexors and extensors of fingers)
fixatorsstabilize the orgin of the agonist so its more efficient (arm abduction)
rectusparallel to midline
transverseperpendicular to midline
oblique diagonal to midline
maximuslargest
mediusintermediate
minimus smallest
longuslong
brevisshort
latissimuswidest
longissimuslongest
magnuslarge
majorlarger
minorsmaller
vastus huge
memorize

Section 2

Question Answer
deltoidtriangular
trapeziustrapezoid
serratussaw toothed
rhomboiddiamond shaped
orbiculariscircular
pectinatecomb like
piriformispear shaped
platysflat
quadratussquare
gravilisslender
suprahyoid and infrahyoid muscles TOSSMGSDthyrohyoid, omohyoid, sternothyroid, sternohyoid, mylohyoid, geniohyoid, stylohyoid, digastric
what does the sternocleidomastoid landmark?the anterior triangle and posterior triangle in neck
anterior holds: submandibular salivary gland, carotid arteries, and internal jugular veins
posterior holds: external jugular vein and brachial plexus
perineumdiamond shaped area inferior to pelvic diaphragm, extends from pubic symphasis anteriorly to coccyx inferiorly
superficial muscle of perineumischiocavernosus, helps maintain erection
deep muscles of perineumexternal anal sphincter, external urethral sphincter
what does retinacula do?holds tendons of forearm that move wrist close to the bones
erector spinaeextend the vertebral column
transversospinalesbilateral contraction: extend vertebral column unilateral contraction: rotate vertebral column
segmental musclesextend the vertebral column and later flexion of trunk
memorize

Recent badges