Oakland University BIO2100 Exam
QUESTIONS AND WELL VERIFIED
ANSWERS
Properties of Muscle Tissue - ANSWER>>Contractility, Extensibility, Elasticity,
Irritability, Tonus
Smooth Muscle - ANSWER>>Involuntary, walls of internal organs and blood
vessels, possess 1 nucleus, not striated
Cardiac Muscle - ANSWER>>Involuntary, located in heart, appears striated due to
intercalated discs and has 1 nucleus
Skeletal Muscle - ANSWER>>Can grow to 4 cm in length, multinucleated,
voluntary,
Muscle Fibers - ANSWER>>Contain thousands oof myofibrils (functional unit for
muscles) and provide the characteristic of contractibility
Muscles are classified by - ANSWER>>Function, Shape, Location, Number of heads
of origin, Structure
Muscles require - ANSWER>>a substantial amount of blood supply
Prime Mover - ANSWER>>muscle that directly produces desired movement
Antagonist - ANSWER>>muscle that produces a movement opposite the prime
mover
Synergist - ANSWER>>muscles that adds extra help to prime mover
, Fixators - ANSWER>>muscle that maintain body position while a part is moving
Frontalis - ANSWER>>two muscles located superior to the orbits of eye that
elevate eyebrows
Orbicularis Oculi - ANSWER>>circular muscle surrounding the eye
Levator Labii Superioris - ANSWER>>elevates upper lip
Zygomaticus Major/Minor and Risorius - ANSWER>>elevate corners of the mouth
when smiling
Orbicularis Oris - ANSWER>>circle muscle that contracts the lips
Platysma - ANSWER>>Elevates skin of the neck
Temporalis - ANSWER>>O: frontal, pariental, temporal bone
I: coronoid process of mandible
A: elevate mandible
IN: mandibular branch of trigeminal
Masseter - ANSWER>>O: zygomatic bone
I: external ramus
A: elevate mandible
IN: trigeminal mandibular branch
All muscles of facial expression are innervated by - ANSWER>>facial nerve (CN VII)
Medial and Lateral Pterygoids - ANSWER>>O: sphenoid bone
I: mandible and condylar process of mandible
A: grinding movement
IN: mandibular branch
QUESTIONS AND WELL VERIFIED
ANSWERS
Properties of Muscle Tissue - ANSWER>>Contractility, Extensibility, Elasticity,
Irritability, Tonus
Smooth Muscle - ANSWER>>Involuntary, walls of internal organs and blood
vessels, possess 1 nucleus, not striated
Cardiac Muscle - ANSWER>>Involuntary, located in heart, appears striated due to
intercalated discs and has 1 nucleus
Skeletal Muscle - ANSWER>>Can grow to 4 cm in length, multinucleated,
voluntary,
Muscle Fibers - ANSWER>>Contain thousands oof myofibrils (functional unit for
muscles) and provide the characteristic of contractibility
Muscles are classified by - ANSWER>>Function, Shape, Location, Number of heads
of origin, Structure
Muscles require - ANSWER>>a substantial amount of blood supply
Prime Mover - ANSWER>>muscle that directly produces desired movement
Antagonist - ANSWER>>muscle that produces a movement opposite the prime
mover
Synergist - ANSWER>>muscles that adds extra help to prime mover
, Fixators - ANSWER>>muscle that maintain body position while a part is moving
Frontalis - ANSWER>>two muscles located superior to the orbits of eye that
elevate eyebrows
Orbicularis Oculi - ANSWER>>circular muscle surrounding the eye
Levator Labii Superioris - ANSWER>>elevates upper lip
Zygomaticus Major/Minor and Risorius - ANSWER>>elevate corners of the mouth
when smiling
Orbicularis Oris - ANSWER>>circle muscle that contracts the lips
Platysma - ANSWER>>Elevates skin of the neck
Temporalis - ANSWER>>O: frontal, pariental, temporal bone
I: coronoid process of mandible
A: elevate mandible
IN: mandibular branch of trigeminal
Masseter - ANSWER>>O: zygomatic bone
I: external ramus
A: elevate mandible
IN: trigeminal mandibular branch
All muscles of facial expression are innervated by - ANSWER>>facial nerve (CN VII)
Medial and Lateral Pterygoids - ANSWER>>O: sphenoid bone
I: mandible and condylar process of mandible
A: grinding movement
IN: mandibular branch
