1. Muscle fibers can contract continuously for an indefinite amount of time. Sel

Question

1. Muscle fibers can contract continuously for an indefinite amount of time.

Select one:

True

False

2. Lifting a dumbell at the gym is an example of isometric contraction.

Select one:

True

False

3. During the latent period of the muscle contraction, neurotransmitters are introduced into the synapse of the neuromuscular junction (the area where the nerve meets with the muscle) and actin and myosin go back to their resting positions.

Select one:

True

False

4. The burning sensation that you get during muscle fatigue is due to the build-up of lactic acid.

Select one:

True

False

5. The reason athletes warm up before a game is because it increases the availability of calcium in the muscle.

Select one:

True

False

6.

The wrist is made up of many tiny bones. What are these bones referred to as?

Select one:

a. carpals

b. tarsals

c. ulnar

d. radius

7.

Which cranial bone are you touching when you put your hand on your forehead?

Select one:

a. parietal bone

b. occipital bone

c. frontal bone

d. mandible

8.

The patellar (knee jerk) reflex is an example of a somatic reflex.

Select one:

True

False

9.

The phalanges are the bones found in the fingers and toes.

Select one:

True

False

10.

Which structure reduces friction within a synovial joint?

Select one:

a. articular capsule

b. synovial membrane

c. bursae

d. fibrocartilage

Explanation / Answer

1. true -------- heart muscles contract continously.

2. false , it is called concentric contraction. because biceps muscles shorten as the person lifts the dumbbell , this shortening of muscle is called concentric contraction.

3. true.

4. true , due to increased acidity in tissues

5. true : muscles will have increased rate of contraction due to increased availability of calcium.

6. wrist is made of eight bones called carpal bones.

7. frontal bone.

8. true , because somatic ones affect the muscles.

9. true.

10. synovial membrane

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