Bio 256 Exam 3 Questions With Correct
Answers
What |is |the |major |function |of |the |sarcoplasmic |reticulum |in |muscle |contraction? |- |CORRECT |
ANSWER✔✔-Regulates |intracellular |calcium |levels
An |elaborate |network |of |membranes |in |skeletal |muscle |cells |that |functions |in |calcium |storage |
is |the? |- |CORRECT |ANSWER✔✔-Sarcoplasmic |Reticulum
A |motor |neuron |and |the |myofibers |it |innervates |is |known |as |a(n)? |- |CORRECT |ANSWER✔✔-
Motor |Unit
The |first |thing |that |stops |a |muscle |contraction |after |a |motor |neuron |stops |releasing |
acetylcholine |is? |- |CORRECT |ANSWER✔✔-Acetocholinesterase |destroys |the |acetylcholine |as |it |
is |removed |from |the |membrane |receptors
The |role |of |calcium |ions |in |muscle |contraction |is |to? |- |CORRECT |ANSWER✔✔-Bind |to |
regulatory |sites |on |troponin, |changing |the |configuration, |contraction
The |number |of |muscle |fibers |in |a |contracted |state |in |an |otherwise |relaxed |muscle |is |known |as
|its? |- |CORRECT |ANSWER✔✔-Muscle |Tone
In |an |isotonic |contraction, |the |muscle... |- |CORRECT |ANSWER✔✔-Changes |in |length |and |moves
|the |"load"
When |stimuli |bring |about |more |and |more |fibers |in |a |contracted |state, |this |is |called: |- |
CORRECT |ANSWER✔✔-Recruitment
Oxygen |is |stored |in |myofibers |on/in... |- |CORRECT |ANSWER✔✔-Myoglobin
, The |blood |vessel |type |removing |carbon |dioxide |and |wastes |from |the |tissues |is |the? |- |CORRECT
|ANSWER✔✔-Vein
The |mechanism |of |contraction |in |smooth |muscle |parallels |that |of |skeletal |muscle |in |the |
following |ways |EXCEPT |- |CORRECT |ANSWER✔✔-The |calcium-mediated |regulation |of |
contraction |differs
Most |Abundant |Plasma |Proteins |- |CORRECT |ANSWER✔✔-Albumins, |Globulins, |& |Fibriogen
Which |blood |protein |carries |blood |from |the |lungs |to |tissue? |- |CORRECT |ANSWER✔✔-
Hemoglobin
Oxygen |is |transported |by |red |blood |cells, |it |is |carried |by? |- |CORRECT |ANSWER✔✔-Attaching |to
|the |iron |ion |heme
Which |of |the |following |is |NOT |required |for |erythropoiesis? |- |CORRECT |ANSWER✔✔-
Production |of |vacuoles
If |a |person |has |hepatitis, |the |liver |may |not |convert |bile |pigments |normally |or |transport |them |
appropriately |to |the |gall |bladder. |Thus, |pigments |accumulate |in |the |blood; |this |is |called |
jaundice. |Which |bile |pigment |would |you |expect |to |be |in |highest |concentration |in |the |blood |of |
a |person |with |this |condition? |- |CORRECT |ANSWER✔✔-Billirubin
Which |would |be |associated |with |prematurely |ruptured |erythrocytes? |- |CORRECT |ANSWER✔✔-
Hemolytic |Anemia
Acute |leukemia |is |more |common |in |____ |persons; |chronic |leukemia |is |more |common |in |___ |
persons. |- |CORRECT |ANSWER✔✔-Younger, |Older
Answers
What |is |the |major |function |of |the |sarcoplasmic |reticulum |in |muscle |contraction? |- |CORRECT |
ANSWER✔✔-Regulates |intracellular |calcium |levels
An |elaborate |network |of |membranes |in |skeletal |muscle |cells |that |functions |in |calcium |storage |
is |the? |- |CORRECT |ANSWER✔✔-Sarcoplasmic |Reticulum
A |motor |neuron |and |the |myofibers |it |innervates |is |known |as |a(n)? |- |CORRECT |ANSWER✔✔-
Motor |Unit
The |first |thing |that |stops |a |muscle |contraction |after |a |motor |neuron |stops |releasing |
acetylcholine |is? |- |CORRECT |ANSWER✔✔-Acetocholinesterase |destroys |the |acetylcholine |as |it |
is |removed |from |the |membrane |receptors
The |role |of |calcium |ions |in |muscle |contraction |is |to? |- |CORRECT |ANSWER✔✔-Bind |to |
regulatory |sites |on |troponin, |changing |the |configuration, |contraction
The |number |of |muscle |fibers |in |a |contracted |state |in |an |otherwise |relaxed |muscle |is |known |as
|its? |- |CORRECT |ANSWER✔✔-Muscle |Tone
In |an |isotonic |contraction, |the |muscle... |- |CORRECT |ANSWER✔✔-Changes |in |length |and |moves
|the |"load"
When |stimuli |bring |about |more |and |more |fibers |in |a |contracted |state, |this |is |called: |- |
CORRECT |ANSWER✔✔-Recruitment
Oxygen |is |stored |in |myofibers |on/in... |- |CORRECT |ANSWER✔✔-Myoglobin
, The |blood |vessel |type |removing |carbon |dioxide |and |wastes |from |the |tissues |is |the? |- |CORRECT
|ANSWER✔✔-Vein
The |mechanism |of |contraction |in |smooth |muscle |parallels |that |of |skeletal |muscle |in |the |
following |ways |EXCEPT |- |CORRECT |ANSWER✔✔-The |calcium-mediated |regulation |of |
contraction |differs
Most |Abundant |Plasma |Proteins |- |CORRECT |ANSWER✔✔-Albumins, |Globulins, |& |Fibriogen
Which |blood |protein |carries |blood |from |the |lungs |to |tissue? |- |CORRECT |ANSWER✔✔-
Hemoglobin
Oxygen |is |transported |by |red |blood |cells, |it |is |carried |by? |- |CORRECT |ANSWER✔✔-Attaching |to
|the |iron |ion |heme
Which |of |the |following |is |NOT |required |for |erythropoiesis? |- |CORRECT |ANSWER✔✔-
Production |of |vacuoles
If |a |person |has |hepatitis, |the |liver |may |not |convert |bile |pigments |normally |or |transport |them |
appropriately |to |the |gall |bladder. |Thus, |pigments |accumulate |in |the |blood; |this |is |called |
jaundice. |Which |bile |pigment |would |you |expect |to |be |in |highest |concentration |in |the |blood |of |
a |person |with |this |condition? |- |CORRECT |ANSWER✔✔-Billirubin
Which |would |be |associated |with |prematurely |ruptured |erythrocytes? |- |CORRECT |ANSWER✔✔-
Hemolytic |Anemia
Acute |leukemia |is |more |common |in |____ |persons; |chronic |leukemia |is |more |common |in |___ |
persons. |- |CORRECT |ANSWER✔✔-Younger, |Older
