Biology 2 - The Muscular System

5 Written Questions

1. lasts 10 to 100 milliseconds
   Ca 2+ back to SR
2. epimysium
3. step 5
4. rigor mortis, 72 hours
5. tendonitits

5 Matching Questions

1. intercalated discs
2. sudden involuntary contraction of a muscle
3. the neurotransmitter produced and secreted at the synapse
4. clacium released from sarcoplasmic reticulum and floods the sarcoplasm
5. thin contractile fiber is called

1. a step 4
2. b actin
3. c spasm
4. d acetylcholine (ACh)
5. e cardiac

5 Multiple Choice Questions

1. cardiac
   1. viscera
   2. heart
   3. straited
   4. voluntary
2. skeletal
   1. straited
   2. a muscle tumor
   3. study of muscles
   4. attached to bones
3. skeletal
   1. heart
   2. involuntary
   3. viscera
   4. voluntary
4. step 6
   1. contraction
   2. contraction period
   3. heart
   4. a contractile unit
5. muscles will either fully contract or not contract at all. they will never partially contract.
   1. another word for an impulse
   2. fascia that covers fascicle
   3. explain the all or none principle
   4. fascia that covers myofibrils

5 True/False Questions

1. at what age do muscles begin to weaken → 30

   True        False

2. aerobic muscular activity → short periods of time, 15 seconds

   True        False

3. anaerobic muscular activity → longer periods of time, more than 30 seconds

   True        False

4. excitability → ability to respond to certain stimuli by producing impulses

   True        False

5. three components of a myogram → latent period, contraction period, relaxation period

   True        False