Fundamentals of Anatomy & Physiology: A&P Chapter 10- pictures Flashcards

What is the contraction in graph (a) called?

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

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

Why is there partial relaxation in graph (c)?

What is the contraction in graph (d) called?

Identify the structure labeled "1."

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

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

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

What is released from the structure labeled "9"?

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

Where would calcium ions be predominately found?

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

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

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

Where are the myosin molecules located?

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

Which structure contains the motor end plate?

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

Identify the structure where ATP is produced.

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

Identify the structure(s) where ATP is consumed?

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