BYU Cell 220 Exam 2 Questions With Correct
Answers
What |are |the |three |types |of |muscle |tissue? |- |CORRECT |ANSWER✔✔-Skeletal, |Cardiac, |and |
Smooth
What |are |the |properties |of |muscle |tissue? |- |CORRECT |ANSWER✔✔-Excitability, |Contractility, |
Elasticity, |and |Extensability
Where |is |cardiac |muscle |found? |- |CORRECT |ANSWER✔✔-The |Myocardium |of |the |Heart
What |are |the |Characteristics |of |Cardiac |Muscle? |- |CORRECT |ANSWER✔✔-Branches |Fibers, |1 |or
|2 |nuclei, |Intercalated |discs, |Striations, |auto-rhythmic, |Involuntary
Where |is |smooth |muscle |found? |- |CORRECT |ANSWER✔✔-Walls |of |visceral |organs
What |are |the |characteristics |of |smooth |muscle? |- |CORRECT |ANSWER✔✔-Fusiform |shape, |1 |
nucleus, |no |striations, |involuntary, |fatigue-resistant
What |are |the |characteristics |of |skeletal |muscle? |- |CORRECT |ANSWER✔✔-Large, |Cylindrical, |
many |nuclei, |striated, |voluntary, |vascular, |innervated |at |neuromuscular |junctions, |formed |from
|fusion |of |myoblasts
What |are |the |functions |of |skeletal |muscle? |- |CORRECT |ANSWER✔✔-Movement, |posture |
maintenance, |temperature |regulation, |storage |of |materials |(amino |acids |and |glycogen), |
movement |of |materials, |support |abdominal |organs, |joint |stabilization
,The |endomysium |wraps... |- |CORRECT |ANSWER✔✔-Muscle |fibers
The |perimysium |wraps... |- |CORRECT |ANSWER✔✔-Fascicles
The |epimysium |wraps... |- |CORRECT |ANSWER✔✔-Entire |muscles
Deep |fascia |wraps... |- |CORRECT |ANSWER✔✔-Muscle |groups
What |is |the |order |of |skeletal |muscle |organization |from |smallest |to |largest? |- |CORRECT |
ANSWER✔✔-Myosin/Actin |proteins, |thick/thin |filaments, |myofibril, |myofiber, |fascicle, |muscle, |
muscle |group
Collagen |fibers |of |endomysium, |perimysium, |and |epimysium |are |__________ |with |tendons |- |
CORRECT |ANSWER✔✔-Continuous
What |wraps |a |muscle |fiber? |- |CORRECT |ANSWER✔✔-The |Sarcolemma
Tendons |connect |muscles |to... |- |CORRECT |ANSWER✔✔-Bones |or |skin
An |aponeurosis |is |a... |- |CORRECT |ANSWER✔✔-Flat |tendon
Testosterone |makes |muscle |fibers... |- |CORRECT |ANSWER✔✔-Wider |and |thicker
Where |is |skeletal |muscle |found? |- |CORRECT |ANSWER✔✔-Connected |to |the |skeleton
What |does |actin |do? |- |CORRECT |ANSWER✔✔-Contracts |muscle |(acts)
, What |does |myosin |do? |- |CORRECT |ANSWER✔✔-Binds |to |ATP
How |do |z |lines |move? |- |CORRECT |ANSWER✔✔-Closer |together. |In |toward |M |line.
What |do |troponin |and |tropomyosin |do |to |aid |muscle |movement? |- |CORRECT |ANSWER✔✔-
Make |a |complex |allowing |actin |to |slide
Actin |is |a |_____ |filament |- |CORRECT |ANSWER✔✔-Thin
Myosin |is |the |_________ |filament |- |CORRECT |ANSWER✔✔-Thick
M |lines |are |- |CORRECT |ANSWER✔✔-Anchors, |immobile
Action |potential |occurs |at |the... |- |CORRECT |ANSWER✔✔-Neuromuscular |junction
The |Terminal |Cisternae... |- |CORRECT |ANSWER✔✔-Hold |nutrients |(mostly |calcium)
What |is |the |process |of |muscle |contraction? |- |CORRECT |ANSWER✔✔-1. |An |action |potential |
arrives |at |the |neuromuscular |junction. |2. |ACh |is |released, |binds |to |receptors, |and |opens |
sodium |ion |channels. |3. |Action |potential |travels |along |the |t-tubules. |4. |Calcium |reacts |with |the
|troponin/tropomyosin |complex, |affecting |actin |first. |5. |Actin |twists, |Myosin |slides. |6. |The |
muscle |shortens |and |produces |tension.
What |is |the |process |of |muscle |relaxation? |- |CORRECT |ANSWER✔✔-1. |Calcium |is |reabsorbed |
(ATP |is |required), |triggered |by |a |lack |of |excitability. |2. |Interaction |between |thick |and |thin |
filaments |relax. |3. |Muscles |lengthen |and |relax.
What |is |a |parallel |fascicle |arrangement? |- |CORRECT |ANSWER✔✔-Fibers |run |parallel |to |the |
long |axis |of |the |muscle |(Ex: |Rectus |abdominis)
Answers
What |are |the |three |types |of |muscle |tissue? |- |CORRECT |ANSWER✔✔-Skeletal, |Cardiac, |and |
Smooth
What |are |the |properties |of |muscle |tissue? |- |CORRECT |ANSWER✔✔-Excitability, |Contractility, |
Elasticity, |and |Extensability
Where |is |cardiac |muscle |found? |- |CORRECT |ANSWER✔✔-The |Myocardium |of |the |Heart
What |are |the |Characteristics |of |Cardiac |Muscle? |- |CORRECT |ANSWER✔✔-Branches |Fibers, |1 |or
|2 |nuclei, |Intercalated |discs, |Striations, |auto-rhythmic, |Involuntary
Where |is |smooth |muscle |found? |- |CORRECT |ANSWER✔✔-Walls |of |visceral |organs
What |are |the |characteristics |of |smooth |muscle? |- |CORRECT |ANSWER✔✔-Fusiform |shape, |1 |
nucleus, |no |striations, |involuntary, |fatigue-resistant
What |are |the |characteristics |of |skeletal |muscle? |- |CORRECT |ANSWER✔✔-Large, |Cylindrical, |
many |nuclei, |striated, |voluntary, |vascular, |innervated |at |neuromuscular |junctions, |formed |from
|fusion |of |myoblasts
What |are |the |functions |of |skeletal |muscle? |- |CORRECT |ANSWER✔✔-Movement, |posture |
maintenance, |temperature |regulation, |storage |of |materials |(amino |acids |and |glycogen), |
movement |of |materials, |support |abdominal |organs, |joint |stabilization
,The |endomysium |wraps... |- |CORRECT |ANSWER✔✔-Muscle |fibers
The |perimysium |wraps... |- |CORRECT |ANSWER✔✔-Fascicles
The |epimysium |wraps... |- |CORRECT |ANSWER✔✔-Entire |muscles
Deep |fascia |wraps... |- |CORRECT |ANSWER✔✔-Muscle |groups
What |is |the |order |of |skeletal |muscle |organization |from |smallest |to |largest? |- |CORRECT |
ANSWER✔✔-Myosin/Actin |proteins, |thick/thin |filaments, |myofibril, |myofiber, |fascicle, |muscle, |
muscle |group
Collagen |fibers |of |endomysium, |perimysium, |and |epimysium |are |__________ |with |tendons |- |
CORRECT |ANSWER✔✔-Continuous
What |wraps |a |muscle |fiber? |- |CORRECT |ANSWER✔✔-The |Sarcolemma
Tendons |connect |muscles |to... |- |CORRECT |ANSWER✔✔-Bones |or |skin
An |aponeurosis |is |a... |- |CORRECT |ANSWER✔✔-Flat |tendon
Testosterone |makes |muscle |fibers... |- |CORRECT |ANSWER✔✔-Wider |and |thicker
Where |is |skeletal |muscle |found? |- |CORRECT |ANSWER✔✔-Connected |to |the |skeleton
What |does |actin |do? |- |CORRECT |ANSWER✔✔-Contracts |muscle |(acts)
, What |does |myosin |do? |- |CORRECT |ANSWER✔✔-Binds |to |ATP
How |do |z |lines |move? |- |CORRECT |ANSWER✔✔-Closer |together. |In |toward |M |line.
What |do |troponin |and |tropomyosin |do |to |aid |muscle |movement? |- |CORRECT |ANSWER✔✔-
Make |a |complex |allowing |actin |to |slide
Actin |is |a |_____ |filament |- |CORRECT |ANSWER✔✔-Thin
Myosin |is |the |_________ |filament |- |CORRECT |ANSWER✔✔-Thick
M |lines |are |- |CORRECT |ANSWER✔✔-Anchors, |immobile
Action |potential |occurs |at |the... |- |CORRECT |ANSWER✔✔-Neuromuscular |junction
The |Terminal |Cisternae... |- |CORRECT |ANSWER✔✔-Hold |nutrients |(mostly |calcium)
What |is |the |process |of |muscle |contraction? |- |CORRECT |ANSWER✔✔-1. |An |action |potential |
arrives |at |the |neuromuscular |junction. |2. |ACh |is |released, |binds |to |receptors, |and |opens |
sodium |ion |channels. |3. |Action |potential |travels |along |the |t-tubules. |4. |Calcium |reacts |with |the
|troponin/tropomyosin |complex, |affecting |actin |first. |5. |Actin |twists, |Myosin |slides. |6. |The |
muscle |shortens |and |produces |tension.
What |is |the |process |of |muscle |relaxation? |- |CORRECT |ANSWER✔✔-1. |Calcium |is |reabsorbed |
(ATP |is |required), |triggered |by |a |lack |of |excitability. |2. |Interaction |between |thick |and |thin |
filaments |relax. |3. |Muscles |lengthen |and |relax.
What |is |a |parallel |fascicle |arrangement? |- |CORRECT |ANSWER✔✔-Fibers |run |parallel |to |the |
long |axis |of |the |muscle |(Ex: |Rectus |abdominis)
