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Viewing:

A&P Chapter 10- pictures

front 1

What is the contraction in graph (a) called?

back 1

Treppe

front 2

What is thought to happen in a muscle during the response shown in graph (a)?
(Treppe contraction graph)

back 2

There is a gradual increase in calcium ion concentration in the sarcoplasm

front 3

To produce a contraction similar to the one in graph (b), the muscle _________.

back 3

Must be stimulated again before it has relaxed from the previous stimulation

front 4

Why is there partial relaxation in graph (c)?

back 4

Nerve stimulation frequency is below maximum

front 5

What is the contraction in graph (d) called?

back 5

Complete tetanus

front 6

Identify the structure labeled "1."

  1. mitochondria
  2. glycogen
  3. ATP
  4. myofibril
  5. synaptic vesicle

back 6

mitochondria

front 7

Which of the following are found in the structure labeled "3"?

  1. actin
  2. myosin
  3. titin
  4. tropomyosin
  5. all of the answers are correct

back 7

All of the answers are correct.

front 8

What physiological process occurs in the structure labeled "7"?

  1. release of neurotransmitter
  2. conduction of the actin potential into the cell interior
  3. activity of acetylcholinesterase
  4. release of protein and calcium ions into the muscle fiber
  5. opening of sodium channels and subsequent influx of sodium

back 8

conduction of the actin potential into the cell interior

front 9

What is released from the structure labeled "9"?

  1. sarcoplasm
  2. acetylcholine
  3. protein
  4. calcium ions
  5. acetylcholinesterase

back 9

calcium ions

front 10

Where would calcium ions be predominately found?

  1. 1
  2. 2
  3. 4
  4. 8
  5. 9

back 10

9

front 11

Which structure has pumps to remove calcium ions from the sarcoplasm to produce relaxation?

  1. 6
  2. 7
  3. 1
  4. 3
  5. 2

back 11

6

front 12

Where are the myosin molecules located?

  1. 4
  2. 5
  3. 6
  4. 7
  5. 8

back 12

5

front 13

Which structure contains the motor end plate?

  1. 1
  2. 2
  3. 3
  4. 5
  5. 8

back 13

2

front 14

Identify the structure where ATP is produced.

  1. 6
  2. 7
  3. 1
  4. 3
  5. 2

back 14

1

front 15

Identify the structure(s) where ATP is consumed?

  1. 3
  2. 6
  3. 3 and 6
  4. 7
  5. 3 and 7

back 15

3 and 6