Chapter 10 & 11

Question 1

Zone of overlap is made up of what?

Answer 1

Where thick and thin filaments overlap

Question 2

What are the proteins found in a sarcomere?

Answer 2

Myosin, actin, titin, troponin and tropomyosin

Question 3

What is the largesst protein in the human body?

Answer 3

Titin

Question 4

When contraction occurs the _________ get smaller.

Answer 4

H zones and I bands

Question 5

Triad is made up of__________________________

Answer 5

One transverse tubue and two terminal cisternae

Question 6

F actin is made up of_____________

Answer 6

Two rows of G actin

Question 7

________ is the smallest functional unit of muscle fiber/cell

Answer 7

Sarcomere

Question 8

All of these are steps in muscle contraction except _________

• Excitation
• Extraction
• Contraction
• Excitation-contraction coupling

Answer 8

Extraction

Question 9

All of these are layers of connective tissue except _______

• Perimysium
• Epimysium
• Osteomysium
• Endomysium

Answer 9

Osteomysium

Question 10

What are the neurotransmitters inside the vesicles?

Answer 10

Acetylcline

Question 11

Dark bands are made up of _________

Answer 11

A band

Question 12

When calcium is inside this it is relaxed

Answer 12

Terminal cisternae

Question 13

When contraction occurs this increases

Answer 13

Zones or areas of overlap

Question 14

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

Answer 14

Thick filament

Question 15

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

Answer 15

G actin

Question 16

One tropomyosin contains how many active sites

Answer 16

7

Question 17

All of these are functions of muscles except?

• Movement
• Excretion
• Heat production
• Posture
• Guards entrances and exits.

Answer 17

Excretion

Question 18

All of these are components of thin filaments except

• F actin
• Myosin
• Tropomyosin
• Nebulin
• Troponin

Answer 18

Myosin

Question 19

What protein holds the tropomyosin molecules in place?

Answer 19

Troponin

Question 20

All of these are characteristics of skelteal muscles that permit them to function as they do except?

• Extensibility
• Exitability
• Flexibility
• Contractibility

Answer 20

Flexibility

Question 21

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

Answer 21

Neurotransmitter

Question 22

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

Answer 22

Neurotransmitter

Question 23

What is another name for cardiac muscle?

Answer 23

Striated involuntary

Question 24

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

Answer 24

Na/K ATPase pump

Question 25

What allows Na ions to move inside skeletal muscle?

Answer 25

nACH

Question 26

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

Answer 26

Muscle becomes Depolarized | Skeletal muscle becomes more positive.

Question 27

Whats another name for skeletal muscle?

Answer 27

Striated voluntary

Question 28

Whats another name for smooth muscle?

Answer 28

Nonstriated involuntary

Question 29

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

Answer 29

Epimysium

Question 30

This divides the muscle into compartments called fasicles

Answer 30

Perimysium

Question 31

This surrounds individual muscle cells and inerconnects adjacent muscle fibers

Answer 31

Endomysium

Question 32

Muscle fibers are also called

Answer 32

Muscle cell

Question 33

Each muscle has two attachment sites called

Answer 33

Origin and insertion

Question 34

This is surrounded by enomysium and made up of myofibrils.

Answer 34

Muscle fibers

Question 35

This is surrounded by perimysium and made up of muscle fibers

Answer 35

Muscle fascicle

Question 36

This is surrounded by epimysium and made up of muscle fascicles

Answer 36

Skeletal muscle

Question 37

This is surrounded by sarcoplasmic reticulum and made up of sarcomeres.

Answer 37

Myofibrils

Question 38

This is surrounded by sarcoplasmic reticulum and made up of sarcomeres.

Answer 38

Myofibrils

Question 39

This is made up of thick and thin filaments

Answer 39

sarcomeres

Question 40

The following are all parts of a uscle fiber except

Answer 40

sarcomeres

Question 41

Skeletal muscle can reach how many inches in length?

Answer 41

12

Question 42

During the embryonic stage, cells called _____ fuse together to form a single muscle fiber

Answer 42

Myoblasts

Question 43

This is passageways that carry electrical impulses from sarcolemma into cell sarcoplasm

Answer 43

Transverse tubule

Question 44

This is the cell membrane of muscle fiber that surrounds sarcoplasm

Answer 44

Sarcolemma

Question 45

This is responsible for skeletal muscle fiber contraction

Answer 45

Myofibrils

Question 46

Expanded chambers of sarcoplasmic reticulum are called

Answer 46

Terminal cisternae

Question 47

When contraction occurs the width of _______ remain constant

Answer 47

A bands

Question 48

A strand of ______ spirals between two rows of G actin holding F actin together

Answer 48

Nebulin

Question 49

This protein covers G actins "active site" preventing Actin/Myosin from interacting

Answer 49

Tropomyosin

Question 50

This has three subunits that bind to tropomyosin, G actin and calcium molecule

Answer 50

Troponin

Question 51

This is the area where nerve and muscle meet

Answer 51

Neuromuscular junction

Question 52

A motor neuron sends impulse down azon to end of nerve called _____

Answer 52

Synaptic terminal

Question 53

Another name for action potential is

Answer 53

Electrical impulse

Question 54

The gap between the muscle and neuron is called

Answer 54

Synaptic cleft

Question 55

The section of the muscle that holds the nACH receptors is called the

Answer 55

Motor end plate

Question 56

The motor neuron vesicles release ACH into the

Answer 56

Synaptic cleft

Question 57

The motor neuron vesicles release ACH into the

Answer 57

Synaptic cleft

Question 58

ACH floats across synaptic cleft to the muscle and binds to receptors on outside of muscle called

Answer 58

nACH receptors