Comprehensivel Exam:l BIOSl 252/l
BIOS252l (NEWl 2026/l 2027l Update)l
Anatomyl andl Physiologyl IIl withl Labl
Guide|l Questionsl &l Answersl |l Gradel A|l
100%l Correctl (Verifiedl Solutions)-
Chamberlain
QUESTION
Definel antagonist
Answer:
Musclel thatl opposesl thel actionl ofl thel primel mover
QUESTION
Definel fixator
Answer:
Musclel thatl preventsl movementl ofl bone
QUESTION
Definel agonist
Answer:
Musclel producingl mostl ofl forcel duringl al particularl action
QUESTION
Definel synergist
,Answer:
Musclel thatl aidsl thel primel mover
QUESTION
Identifyl thel musclesl ofl inhalationl andl exhalationl andl describel howl theyl eachl workl inl
eachl process
Answer:
Diaphragm:
-Musclel fasciclesl extendl tol al fibrousl centrall tendon
-Contractionl flattensl diaphragm
---Enlargesl thoracicl cavityl (inspiration)
-Diaphragml risesl whenl itl relaxes
---Shrinksl thel thoracicl cavityl (expiration)
Externall intercostal:
-Elevatel ribs
-Expandl thoracicl cavity
-Createl partiall vacuuml causingl inflowl ofl air
Internall intercostal:
-Depressesl andl retractsl ribs
-Compressesl thoracicl cavity
-Expellingl air
Innermostl intercostall muscles:l samel asl internal
QUESTION
Describel thel rolel playedl byl eachl ofl thesel proteinsl andl theirl interactionsl inl musclel
contraction
Answer:
Troponinl &l Tropomyosin:l Regulatoryl proteins
-Actl asl switchl thatl determinesl whenl fiberl canl (andl cannot)l contract
-Contractionl activatedl byl releasel ofl calciuml intol sarcoplasml andl itsl bindingl tol troponinl
-Troponinl changesl shapel andl movesl tropomyosinl offl thel activel sitesl onl actin
Dystrophin:l clinicallyl importantl protein
-Linksl actinl inl outermostl myofilamentsl tol membranel proteinsl thatl linkl tol endomysium
-Transfersl forcesl ofl musclel contractionl tol connectivel tissuel leadingl tol tendon
, Actin:l activel spotl thatl allowsl forl thel bindingl withl myosinl tol causel al contractionl andl
shorteningl ofl thel skeletall musclel fiber
Myosin:l willl joinl tol thel actinl andl createl thel contractionl ofl al musclel fiber.
QUESTION
Identifyl thel factorsl thatl wouldl increasel thel conductionl velocityl ofl anl actionl potential
Answer:
-Diameter
-Presencel orl absencel ofl myelin
QUESTION
Reticularl Activatingl Systeml (RAS)
Answer:
Al partl ofl thel reticularl formationl thatl activatesl thel cerebrall cortex
QUESTION
Knowl yourl directionall terms
Answer:
Superiorl position:l towardl thel head,l upper,l above
inferiorl position:l towardl thel feet,l lower,l below
Anteriorl position(ventral):Frontl side/inl frontl of
Posteriorl position(dorsal):al bodyl partl isl locatedl towardl thel back.l (dorsal)
mediall position:l Towardl thel midlinel ofl thel body
laterall position:l awayl froml thel midline
Proximall position:l partl ofl thel bodyl thatl isl closerl tol thel originl ofl thatl bodyl part.
Distall position:l Fartherl froml thel pointl ofl originl ofl al structurel orl fartherl froml thel
referencel pointl orl thel midlinel axis
QUESTION
Definel thel planes
BIOS252l (NEWl 2026/l 2027l Update)l
Anatomyl andl Physiologyl IIl withl Labl
Guide|l Questionsl &l Answersl |l Gradel A|l
100%l Correctl (Verifiedl Solutions)-
Chamberlain
QUESTION
Definel antagonist
Answer:
Musclel thatl opposesl thel actionl ofl thel primel mover
QUESTION
Definel fixator
Answer:
Musclel thatl preventsl movementl ofl bone
QUESTION
Definel agonist
Answer:
Musclel producingl mostl ofl forcel duringl al particularl action
QUESTION
Definel synergist
,Answer:
Musclel thatl aidsl thel primel mover
QUESTION
Identifyl thel musclesl ofl inhalationl andl exhalationl andl describel howl theyl eachl workl inl
eachl process
Answer:
Diaphragm:
-Musclel fasciclesl extendl tol al fibrousl centrall tendon
-Contractionl flattensl diaphragm
---Enlargesl thoracicl cavityl (inspiration)
-Diaphragml risesl whenl itl relaxes
---Shrinksl thel thoracicl cavityl (expiration)
Externall intercostal:
-Elevatel ribs
-Expandl thoracicl cavity
-Createl partiall vacuuml causingl inflowl ofl air
Internall intercostal:
-Depressesl andl retractsl ribs
-Compressesl thoracicl cavity
-Expellingl air
Innermostl intercostall muscles:l samel asl internal
QUESTION
Describel thel rolel playedl byl eachl ofl thesel proteinsl andl theirl interactionsl inl musclel
contraction
Answer:
Troponinl &l Tropomyosin:l Regulatoryl proteins
-Actl asl switchl thatl determinesl whenl fiberl canl (andl cannot)l contract
-Contractionl activatedl byl releasel ofl calciuml intol sarcoplasml andl itsl bindingl tol troponinl
-Troponinl changesl shapel andl movesl tropomyosinl offl thel activel sitesl onl actin
Dystrophin:l clinicallyl importantl protein
-Linksl actinl inl outermostl myofilamentsl tol membranel proteinsl thatl linkl tol endomysium
-Transfersl forcesl ofl musclel contractionl tol connectivel tissuel leadingl tol tendon
, Actin:l activel spotl thatl allowsl forl thel bindingl withl myosinl tol causel al contractionl andl
shorteningl ofl thel skeletall musclel fiber
Myosin:l willl joinl tol thel actinl andl createl thel contractionl ofl al musclel fiber.
QUESTION
Identifyl thel factorsl thatl wouldl increasel thel conductionl velocityl ofl anl actionl potential
Answer:
-Diameter
-Presencel orl absencel ofl myelin
QUESTION
Reticularl Activatingl Systeml (RAS)
Answer:
Al partl ofl thel reticularl formationl thatl activatesl thel cerebrall cortex
QUESTION
Knowl yourl directionall terms
Answer:
Superiorl position:l towardl thel head,l upper,l above
inferiorl position:l towardl thel feet,l lower,l below
Anteriorl position(ventral):Frontl side/inl frontl of
Posteriorl position(dorsal):al bodyl partl isl locatedl towardl thel back.l (dorsal)
mediall position:l Towardl thel midlinel ofl thel body
laterall position:l awayl froml thel midline
Proximall position:l partl ofl thel bodyl thatl isl closerl tol thel originl ofl thatl bodyl part.
Distall position:l Fartherl froml thel pointl ofl originl ofl al structurel orl fartherl froml thel
referencel pointl orl thel midlinel axis
QUESTION
Definel thel planes
