Review Game Zone
Flash Cards
(current)
Games
Teachers
Search
Muscular System
Test Description: Muscular System
Instructions: Answer all questions to get your test result.
1) Muscle tissue has all of the following properties except ________.
A
secretion
B
extensibility
C
contractibility
D
excitibility
2) Hypothetically, if a muscle were stretched to the point where thick and thin filaments no longer overlapped, ________.
A
ATP consumption would increase because the sarcomere is trying to contract
B
no muscle tension could be generated
C
cross bridge attachment would be optimum because of all the free binding sites on actin
D
maximum force production would result because the muscle has a maximum range of travel
3) Smooth muscle is characterized by all of the following except ________.
A
there are noncontractile intermediate filaments that attach to dense bodies within the cell
B
it appears to lack troponin
C
there are no sacromeres
D
there are more thick filaments than thin filaments
4) What is the role of calcium ions in muscle contraction?
A
form hydroxyapatite crystals
B
bind to regulatory sites on troponin to remove contraction inhibition
C
increase levels of myoglobin
D
reestablish glycogen stores
5) Rigor mortis occurs because ________.
A
sodium ions leak out of the muscle
B
no ATP is available to release attached actin and myosin molecules
C
the cells are dead
D
proteins are beginning to break down, thus preventing a flow of calcium ions
6) In an isotonic contraction, the muscle ________.
A
rapidly resynthesizes creatine phosphate and ATP
B
does not change in length but increases tension
C
changes in length and moves the load
D
never converts pyruvate to lactate
7) Immediately following the arrival of the stimulus at a skeletal muscle cell there is a short period called the ________ period during which the events of excitation-contraction coupling occur.
A
contration
B
relaxation
C
latent
D
refractory
8) Which muscle cells have the greatest ability to regenerate?
A
cardiac
B
skeletal
C
no muscle can regenerate
D
smooth
9) What structure in skeletal muscle cells functions in calcium storage?
A
intermediate filament network
B
sarcoplasmic reticulum
C
mitochondria
D
myofibrillar network
10) Myoglobin ________.
A
is a protein involved in the direct phosphorylation of ADP
B
produces the end plate potential
C
breaks down glycogen
D
stores oxygen in muscle cells
11) A sarcomere is the distance between two ________.
A
Myosin
B
I bands
C
two Z-discs
D
A bands
12) The ________ contains only the actin filaments.
A
A band
B
z disc
C
I band
D
myosin
13) The thicker filaments are the ________ filaments.
A
myosin
B
actin
C
troponin
D
tropin
14) The stimulus above which no stronger contraction can be elicited, because all motor units are firing in the muscle.
A
Wave summation
B
Tetanus
C
Maximal Stimulus
D
Threshold Stimulus
15) Continued sustained smooth contraction due to rapid stimulation.
A
Treppe
B
Tetanus
C
Maximal Stimulus
D
Wave Summation
16) Serves as the actual trigger for muscle contraction by removing the inhibition of the troponin molecules.
A
Acetylcholine
B
Acetylcholinase
C
Calcium ions
D
Creatine Phosphate
17) Used to convert ADP to ATP by transfer of a high-energy phosphate group. A reserve high-energy compound.
A
Creatine Phosphate
B
Acetylcholine
C
Calcium ions
D
Acetylcholinase
18) Contractures are a result of a total lack of
A
Calcium
B
creatine phosphate
C
acetylcholine
D
ATP
19) The situation in which contractions become stronger due to stimulation before complete relaxation occurs.
A
Maximal Stimulus
B
Threshold stimulus
C
Tetanus
D
Wave Summation
20) Only ____________ muscle cells are always multinucleated
A
cardiac
B
smooth
C
skeletal
D
none of these
*select an answer for all questions
Check Results & Get Answers
Play Games with the Questions Above
Teachers: Create FREE classroom games with your questions
Click for more info!
©2007-2024
ReviewGameZone.com
|
About
|
Privacy
|
Contact
|
Terms
|
Site Map
WAIT! Find what you needed?
×
Still Looking for the Answers?
Have Another Question?
Play a Review Game with These Questions?
Want to Make Your Own Test Like This One?