6215178
Description
Quiz by Nada Medhat, updated more than 1 year ago
|
|
Created by Nada Medhat
over 8 years ago
|
|
Question 1
Question
1) Characters of Local potential:
Answer
-
A) Cannot be graded.
-
B) Followed by ARP
-
C) Associated with decremental conduction.
-
D) Cannot be summated.
Question 2
Question
2) Alactic oxygen debt:
Answer
-
A) Uses greater amount of O2
-
B) Used to replenish ATP stores
-
C) Takes 1 hour or more
-
D) All of the above
Question 3
Question
3) Moderate training, long duration swimming:
Answer
-
A) Increase number of capillaries.
-
B) Increase myoglobin.
-
C) Increase number of mitochondria.
-
D) All of the above.
Question 4
Question
4) Isotonic Contraction:
Answer
-
A) Tension is constant.
-
B) Muscle length decreases.
-
C) Mechanical efficiency is Zero.
-
D) A + B.
Question 5
Question
5) Smooth muscle Contraction:
Answer
-
A) Needs Calmodulin.
-
B) Has Low ATPase activity
-
C) At first, Tension increases then decreases.
-
D) All of the above.
Question 6
Question
6) Nerve Excitability is increased by:
Answer
-
A) Hyperkalemia
-
B) Hypercalcemia
-
C) Hyponatremia
-
D) A + C.
Question 7
Question
7) During rest, Voltage gated Na channels:
Answer
-
A) m gate close, h gate close.
-
B) m gate close, h gate open
-
C) m gate open, h gate open
-
D) n gate open.
Question 8
Question
8) Skeletal muscle contraction:
Answer
-
A) Ca binds to Troponin T
-
B) Bending of Cross bridges donot need ATP.
-
C) A band shortens
-
D) Ca release from SR.
Question 9
Question
9) Smooth muscle contraction is enhanced by:
Answer
-
A) Acetyl choline
-
B) Progesterone
-
C) Norepinephrine
-
D) A + B
Question 10
Question
7) All are characteristics of single unit smooth muscle except:
Answer
-
A) Unstable RMP.
-
B) Spontaneous electric activity
-
C) Nonrhythmic
-
D) Obey all or None law
Want to create your own Quizzes for free with GoConqr? Learn more.