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Biology > A2 Booklet 4- Muscles and Homeostasis > Flashcards

A2 Booklet 4- Muscles and Homeostasis Flashcards

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1
Q

What is homeostasis?

A

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2
Q

What is the structure of skeletal muscle?

A

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3
Q

What is the structure of a muscle fibre?

A

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4
Q

What is the ultrastructure of skeletal muscle?

A

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5
Q

How does a relaxed muscle fibre look?

A

jsry

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6
Q

How does a tensed muscle fibre look?

A

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7
Q

How do actin and myosin work together in muscle fibres?

A

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8
Q

What is the mechanism of muscle contraction?

A

rsrtj CYCLE

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9
Q

What is the structure of the neuromuscular junction?

A

trs

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10
Q

How does transmission across a neuromuscular junction happen?

A

hrts

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11
Q

What are the differences between slow twitch and fast twitch muscle fibres?

A

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12
Q

How is ATP provided during muscle contraction?

A

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13
Q

What is the phosphocreatine system?

A

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14
Q

Describe the graph with energy on the y axis, time on x, has ATP, Creatine phosphate, anaerobic and aerobiv metabolism.

A

sjry

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15
Q

Describe Anaerobic respiration and Aerobic respiration and why they are suited to specific exercise

A

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16
Q

What is meant by the term antagonistic?

A

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17
Q

What is antagonistic muscle action?

A

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18
Q

What different features are maintained in homeostasis?

A

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19
Q

Why is a stable core temperature important?

A

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20
Q

Why is a stable blood pH important?

A

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21
Q

Why is a stable blood glucose concentration important?

A

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22
Q

Why is a stable water potential of blood important?

A

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23
Q

How is an increase in blood glucose controlled?

A

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24
Q

How is a decrease in blood glucose controlled?

A

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25
Q

What is a negative feedback mechanism? What triggers it? Draw the diagram

A

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26
Q

How is adrenaline controlled?

A

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27
Q

What are the two types of diabetes? How do they differ? How are they treated?

A

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28
Q

How does osmoregulation work?

A

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29
Q

What parts of the kidney do what in osmoregulation?

A

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30
Q

What is ultrafiltration?

A

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31
Q

What is the function of the proximal convoluted tubule?

A

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32
Q

What is the function of the loop of Henle?

A

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33
Q

What happens at the distal convoluted tube and collecting duct?

A

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34
Q

What happens with a decrease if water potential in the blood?

A

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35
Q

What happens with a increase if water potential in the blood?

A

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36
Q

What is positive feedback?

A

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