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ANAT Exam 2


Which fascicle arrangements provide more power? Unipennate and Bipennate
Which fascicle arrangements provide more Range Of Motion? Parallel
In an opposing muscle pair, the one that is responsible for the action agonist (prime mover)
In an opposing muscle pair, the one that yields to the effects of the agonist antagonist
In an opposing muscle pair, the one that contracts & stabalizes the intermediate joints synergist
In an opposing muscle pair, the one that stabalizes the origin of the agonist so that it's more efficient fixator
Action of the Erector spinae extend the vertebral column
Action of Transversospinalis Bilateral contraction (extend vertebral column), Unilateral contraction (rotate vertebral column)
Action of Segemental muscles extend the vertebral column & lateral flexion of trunk
Action of Hyoglossus depress tongue, draws it to the side
Action of Levator ani and Ischiococcygeus supports pelvic viscera
Action of Ischiocavernosus helps maintain erection of penis and clitoris (by decreasing urine drainage)
Action of external anal sphincter keeps anal canal closed
Action of zygomaticus minor raises upper lip exposing upper teeth
Action of lateral rectus abducts eye
Action of medial rectus adducts eye
Action of superior rectus elevate, adduct, medially rotates eye
Action of inferior rectus depress, adduct, laterally rotates eye
Action and Origin of Styloglossus elevates and retracts tongue, O: styloid process
Give an example of a prime mover and an antagonist. quadriceps & hamstrings
Give an example of Synergist muscles. flexors and extensors of fingers
Give an example of Fixator muscles. muscles of arm abduction
Action of Genioglossus protrudes and retracts tongue
What are the three Suprahyoid muscles? Mylohyoid Stylohyoid Digastric
What are the four Infrahyoid muscles? Sternohyoid Sternothyroid Omohyoid Thyrohyoid
Suprahyoid and Infrahyoid are the muscles of the neck that help _______ and _________. swallowing (deglutition) and speech
Created by: alexandralee54