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Flashcards in Chapter 10 & 11 Deck (58)
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1

Zone of overlap is made up of what?

Where thick and thin filaments overlap

2

What are the proteins found in a sarcomere?

Myosin, actin, titin, troponin and tropomyosin

3

What is the largesst protein in the human body?

Titin

4

When contraction occurs the _________ get smaller.

H zones and I bands

5

Triad is made up of__________________________

One transverse tubue and two terminal cisternae

6

F actin is made up of_____________

Two rows of G actin

7

________ is the smallest functional unit of muscle fiber/cell

Sarcomere

8

All of these are steps in muscle contraction except _________
-Excitation
-Extraction
-Contraction
-Excitation-contraction coupling

Extraction

9

All of these are layers of connective tissue except _______
-Perimysium
-Epimysium
-Osteomysium
-Endomysium

Osteomysium

10

What are the neurotransmitters inside the vesicles?

Acetylcline

11

Dark bands are made up of _________

A band

12

When calcium is inside this it is relaxed

Terminal cisternae

13

When contraction occurs this increases

Zones or areas of overlap

14

This has a head, a tail and when it binds it forms a cross bridge.

Thick filament

15

What has an active site that can bind to a thick filament?

G actin

16

One tropomyosin contains how many active sites

7

17

All of these are functions of muscles except?
-Movement
-Excretion
-Heat production
-Posture
-Guards entrances and exits.

Excretion

18

All of these are components of thin filaments except
-F actin
-Myosin
-Tropomyosin
-Nebulin
-Troponin

Myosin

19

What protein holds the tropomyosin molecules in place?

Troponin

20

All of these are characteristics of skelteal muscles that permit them to function as they do except?
-Extensibility
-Exitability
-Flexibility
-Contractibility

Flexibility

21

When nerve impulses reach the end of a motor neuron fiber, small vesicles release what substances across the synapitc cleft.

Neurotransmitter

22

When nerve impulses reach the end of a motor neuron fiber, small vesicles release what substances across the synapitc cleft.

Neurotransmitter

23

What is another name for cardiac muscle?

Striated involuntary

24

What causes the inside of muscle cells to become more negative as compared to the ECF?

Na/K ATPase pump

25

What allows Na ions to move inside skeletal muscle?

nACH

26

What is the result of Na ions entering the skeletal muscle?

Muscle becomes Depolarized
Skeletal muscle becomes more positive.

27

Whats another name for skeletal muscle?

Striated voluntary

28

Whats another name for smooth muscle?

Nonstriated involuntary

29

This surrounds the entire muscle and has a dense layer of collagen fibers

Epimysium

30

This divides the muscle into compartments called fasicles

Perimysium