U5L3 - Lecture Presentation - Skeletal Muscle Activity

Unit 5

Muscular System

Skeletal Muscle Activity

Poll

I can explain how a muscle contracts.

• 0 - Clueless

• 1 - Basic Knowledge - Need some tutoring

• 2 - Advanced Knowledge - Can apply it

• 3 - Expert - Can tutor others

Poll

I can explain how oxygen debt develops and how a muscle may become fatigued.

• 0 - Clueless

• 1 - Basic Knowledge - Need some tutoring

• 2 - Advanced Knowledge - Can apply it

• 3 - Expert - Can tutor others

Multiple Select

Which of the following are specialized functional properties of skeletal muscle?

• Irrititability

• Contractility

• Extensibility

• Elasticity

Multiple Choice

The association site of the axon terminal of the motor neuron and sarcolemma of a muscle is called a ...

• synaptic cleft

• neuromuscular junction

• motor end plate

• neurotranmitter

Multiple Select

Graded responses can be produced by changing...

• frequency of muscle contraction

• number of muscle cells being stimulated at one time

• duration of muscle contraction

Multiple Choice

Which of these is a twitch?

Multiple Choice

True or False:

Muscle fiber contraction is "all of none".

• True

• False

Multiple Choice

What is the fastest way to generate ATP?

• Direct phosphorylation of ADP by Creatine Phosphate

• Anaerobic glycolysis and lactic acid formation

• Aerobic respiration

Multiple Choice

Which requires oxygen?

• Direct phosphorylation of ADP by Creatine Phosphate

• Anaerobic glycolysis and lactic acid formation

• Aerobic respiration

Multiple Select

Which of the following are causes of muscle fatigue

• ionic imbalances

• lactic acid accumulation in muscle

• decrease in ATP supply

• too much calcium

Poll

I can explain how a muscle contracts.

• 0 - Clueless

• 1 - Basic Knowledge - Need some tutoring

• 2 - Advanced Knowledge - Can apply it

• 3 - Expert - Can tutor others

Poll

I can explain how oxygen debt develops and how a muscle may become fatigued.

• 0 - Clueless

• 1 - Basic Knowledge - Need some tutoring

• 2 - Advanced Knowledge - Can apply it

• 3 - Expert - Can tutor others