Question

1.A contraction that increases muscle tension without changing length is called?

b.Muscle cells can store the material they need for continuous workWhich of the following is FALSE ?

a)Glucose can be stored by muscle cells in the form of glycogen

b)ATP is stored by muscle fibers as creatine phosphate

c)Calcium is stored by muscle fibers in the sarcoplasmic reticulum

d)Oxygen is stored within muscle cells bound to hemoglobin

e)All of the statements are True

2.A nerve action potential triggers the release of what substance at a neuromuscular junction to stimulate muscle contraction?

all of the above

acetylcholinesterase (AChE)

calcium

adenosine triphosphate (ATP

) acetylcholine (ACh)

Answer 1

Ans 1:- Isometric contraction

Isometric muscle contraction is the production of muscle tension without a change in muscle length or joint angle.

ansb:-. d)Oxygen is stored within muscle cells bound to hemoglobin.

Is false because muscle store oxygen within muscle cells bound to MYOGLOBIN.

ALL OTHER OPTIONS ARE CORRECT STATEMENT.

ANS2:-:- acetylcholine (ACh)

ATP and Ca that are require for muscle contraction is present in the muscle it self. It is not provided by neurons.