Q:l Whatl typesl ofl musclel tissuel arel underl involuntaryl control?

Q:l Whatl typesl ofl musclel tissuel arel underl involuntaryl control?

Answer:

Smoothl andl Cardiacl muscles

Q:l Underl thel microscope,l whatl typesl ofl musclel appearl tol bel striatedl orl stripedl inl appearance?

Answer:

Skeletall andl Cardiac

Q:l Truel orl false:l Musclesl canl onlyl push,l notl pull.

Answer:

false

Q:l Whatl musclel wouldl bel inl anl antagonisticl pairl withl thel tibialisl anterior?

Answer:

Gastrocnemius

Q:l Whyl dol musclesl needl tol workl inl pairs?

BIOLl251/l BIOL251l Modulel 5l W/Labl

Exam:l (Latestl 2026/l 2027l Update)l 100%l

Verifiedl Questionsl &l Answersl |l Gradel A 1 / 4

Answer:

Musclesl canl onlyl pull,l sol onel musclel mustl actl tol contractl inl onel direction,l whilel thel oppositel musclel inl thel antagonisticl pairl movesl thel bonel inl thel oppositel direction.

Q:l Definel thel followingl terms:l Flexion,l Extension,l Dorsiflexion,l Plantarflexion,l Radiall Deviation,l andl Ulnarl Deviation

Answer:

flexionl -l closingl ofl al joint,l "bending" extensionl -l openingl ofl al joint,l "straightening" Abductionl -l movementl awayl froml thel midline Adduction-l movementl towardsl thel midline Dorsiflexionl -l superiorlyl atl anklel joint Plantarflexionl -l flexionl inferiorlyl atl anklel joint Radiall Deviationl -l laterall movementl ofl wristl towardsl thel radius Ulnarl deviationl -l mediall movementl ofl wristl towardsl thel ulna

Q:l Truel orl false:l Myosinl isl knownl asl thel thinl filament.

Answer:

false

Q:l Truel orl false:l Onel sarcomerel isl froml onel Zl linel tol onel Zl line.

Answer:

true

Q:l Whenl al musclel contractionl occurs,l whatl linesl movel closerl togetherl towardsl thel centerl ofl thel sarcomerel (Ml line)?

Answer:

zl lines

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Q:l Whatl isl thel namel ofl thel junctionl wherel al motorl neuronl meetsl withl al muscle?

Answer:

neuromuscularl junction

Q:l Thel releasel ofl acetylcholinel froml thel motorl neuronl triggersl thel influxl ofl whichl ion?

Answer:

sodium

Q:l Inl responsel tol thel actionl potentiall inl thel sarcolemma,l thel sarcoplasmicl reticuluml releasesl whichl ion?

Answer:

calcium

Q:l Whatl needsl tol happenl forl musclel relaxationl tol occur?

Answer:

Thel calciuml ionsl needl tol returnl tol thel sacroplasmicl reticulum

Q:l Reviewl alll figuresl inl Modulel 5.l Alll musclesl listedl inl thel modulel mustl bel memorizedl forl thel examl (location,l action,l innervation,l origin,l andl insertion-l ifl listed) *l Itl isl highlyl recommendedl tol usel thel Visiblel Bodyl Coursewarel tol reviewl thel musclesl forl thisl exam.l Ifl youl havel questionsl aboutl howl tol accessl thisl includedl courseware,l pleasel reachl outl tol yourl instructor.

Answer:

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Q:l Identifyl thel musclel andl itsl actionl highlightedl inl thel figurel below.l

Answer:

Zygomaticusl Minor

Action:l Pullsl cornersl ofl lipsl upward

Q:l Identifyl thel musclel andl itsl actionl inl thel figurel below.l

Answer:

Scalenesl (Optional:l anterior/middle/posterior)

Action:l Elevatesl ribsl 1l &l 2

Q:l Identifyl thel threel divisionsl ofl thel musclel groupl highlightedl below.l

Answer:

Spinalisl thoracis,l Spinalisl cervicis,l andl Spinalisl capitis

Q:l Identifyl thel originl andl insertionl ofl thel musclel indicatedl byl thel pointerl below.l Bel asl specificl asl possiblel inl yourl response.l

Answer:

Origin:l pubicl crest,l pubicl symphysis

Insertion:l cartilagesl ofl ribsl 5-7,l xiphoidl process

(Thisl isl thel Rectusl Abdominis.l Studentl needsl tol includel 2l locationsl eachl forl fulll credit)

Q:l Identifyl thel musclel andl itsl actionsl (includel atl leastl two)l indicatedl inl thel figurel below.l

Answer:

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