HHP 3114 Exam 2 questions with correct
answers
Muscles |that |constrict |or |dilate |to |control |blood |flow |are |called |_______________ |- |CORRECT |
ANSWER✔✔-Smooth |Muscle
Which |of |the |following |is |also |referred |to |as |voluntary |muscle? |- |CORRECT |ANSWER✔✔-
Skeletal |Muscle
The |type |of |muscle |that |is |found |in |the |walls |of |most |internal |organs |is |________________ |- |
CORRECT |ANSWER✔✔-Smooth |Muscle
The |striated |appearance |of |skeletal |muscle |fiber |is |mainly |due |to |- |- |CORRECT |ANSWER✔✔-
The |arrangement |of |the |actin |and |myosin |filaments
Which |structure |within |the |skeletal |muscles |stores |and |releases |calcium? |- |CORRECT |
ANSWER✔✔-sarcoplasmic |reticulum
Calcium |ions, |responsible |for |turning |on |muscle |contraction |are |in |the |- |CORRECT |
ANSWER✔✔-Sarcoplasmic |reticulum
A |sarcomere- |- |CORRECT |ANSWER✔✔-is |the |smallest |functional |unit |of |skeletal |muscle, |found |
between |two |z-lines, |and |contains |actin |and |myosin
The |smallest |functional |unit |of |a |muscle |is |the |__________ |- |CORRECT |ANSWER✔✔-
Sarcomere
The |primary |contractile |proteins |in |the |muscle |are |_________________ |- |CORRECT |
ANSWER✔✔-actin |and |myosin
, A |single |motor |nerve |and |all |of |the |muscle |fibers |that |it |supplies |are |referred |to |as- |- |
CORRECT |ANSWER✔✔-motor |unit
What |substance |is |released |at |the |neuromuscular |junction? |- |CORRECT |ANSWER✔✔-
acetylcholine
What |is |the |trigger |mechanism |to |initiate |contraction |in |skeletal |muscle? |- |CORRECT |
ANSWER✔✔-calcium |binding |to |troponin
The |active |binding |sites |to |which |myosin |cross-bridges |attach |during |muscle |contractions |are |
found- |- |CORRECT |ANSWER✔✔-on |the |actin |filaments
Acetylcholine |is- |- |CORRECT |ANSWER✔✔-the |neurotransmitter |that |is |released |by |motor |
nerves
The |energy |required |for |muscle |contraction |is |supplied |by |______ |- |CORRECT |ANSWER✔✔-
ATP
Slow-twitch |(ST) |muscle |fibers |are |also |sometimes |referred |to |as- |- |CORRECT |ANSWER✔✔-
Type |I |fibers
When |a |muscle |fiber |is |stimulated |by |a |motor |nerve, |the |muscle |fiber |either |will |contract |
maximally |or |it |will |not |contract |at |all. |This |is |referred |to |as- |- |CORRECT |ANSWER✔✔-all |or |
none |principle
What |factors |influence |force |production? |- |CORRECT |ANSWER✔✔-Number |and |type |of |motor |
units |activated, |size |of |muscle, |muscles' |initial |length |when |activated, |and |angle |of |the |joint
answers
Muscles |that |constrict |or |dilate |to |control |blood |flow |are |called |_______________ |- |CORRECT |
ANSWER✔✔-Smooth |Muscle
Which |of |the |following |is |also |referred |to |as |voluntary |muscle? |- |CORRECT |ANSWER✔✔-
Skeletal |Muscle
The |type |of |muscle |that |is |found |in |the |walls |of |most |internal |organs |is |________________ |- |
CORRECT |ANSWER✔✔-Smooth |Muscle
The |striated |appearance |of |skeletal |muscle |fiber |is |mainly |due |to |- |- |CORRECT |ANSWER✔✔-
The |arrangement |of |the |actin |and |myosin |filaments
Which |structure |within |the |skeletal |muscles |stores |and |releases |calcium? |- |CORRECT |
ANSWER✔✔-sarcoplasmic |reticulum
Calcium |ions, |responsible |for |turning |on |muscle |contraction |are |in |the |- |CORRECT |
ANSWER✔✔-Sarcoplasmic |reticulum
A |sarcomere- |- |CORRECT |ANSWER✔✔-is |the |smallest |functional |unit |of |skeletal |muscle, |found |
between |two |z-lines, |and |contains |actin |and |myosin
The |smallest |functional |unit |of |a |muscle |is |the |__________ |- |CORRECT |ANSWER✔✔-
Sarcomere
The |primary |contractile |proteins |in |the |muscle |are |_________________ |- |CORRECT |
ANSWER✔✔-actin |and |myosin
, A |single |motor |nerve |and |all |of |the |muscle |fibers |that |it |supplies |are |referred |to |as- |- |
CORRECT |ANSWER✔✔-motor |unit
What |substance |is |released |at |the |neuromuscular |junction? |- |CORRECT |ANSWER✔✔-
acetylcholine
What |is |the |trigger |mechanism |to |initiate |contraction |in |skeletal |muscle? |- |CORRECT |
ANSWER✔✔-calcium |binding |to |troponin
The |active |binding |sites |to |which |myosin |cross-bridges |attach |during |muscle |contractions |are |
found- |- |CORRECT |ANSWER✔✔-on |the |actin |filaments
Acetylcholine |is- |- |CORRECT |ANSWER✔✔-the |neurotransmitter |that |is |released |by |motor |
nerves
The |energy |required |for |muscle |contraction |is |supplied |by |______ |- |CORRECT |ANSWER✔✔-
ATP
Slow-twitch |(ST) |muscle |fibers |are |also |sometimes |referred |to |as- |- |CORRECT |ANSWER✔✔-
Type |I |fibers
When |a |muscle |fiber |is |stimulated |by |a |motor |nerve, |the |muscle |fiber |either |will |contract |
maximally |or |it |will |not |contract |at |all. |This |is |referred |to |as- |- |CORRECT |ANSWER✔✔-all |or |
none |principle
What |factors |influence |force |production? |- |CORRECT |ANSWER✔✔-Number |and |type |of |motor |
units |activated, |size |of |muscle, |muscles' |initial |length |when |activated, |and |angle |of |the |joint
