Module 7

Question 1

What type of muscle tissue is considered voluntary?

Answer 1

Skeletal

Question 2

What two types of muscle tissue are considered involuntary?

Answer 2

Smooth

Cardiac

Question 3

Which Muscle tissues have striatations?

Answer 3

Cardiac

Skeletal

Question 4

Does a muscle push?

Answer 4

No!

It pulls

Question 5

What are the four characteristics of muscles?

Answer 5

Generates heat
Movement
Posture
Stability

Question 6

What is an aponneurosis?

Answer 6

A broad flat tendon

Question 7

What are the cord-like structures that attach skeletal muscle to bone?

Answer 7

Tendons

Question 8

What is the more proximal or attached part of a muscle that is immoveable or less moveable on the bone?

Answer 8

Origin

Question 9

What is the more distal, more moveable attachment of the muscle?

Answer 9

Insertion

Question 10

What is an isotonic contraction?

Answer 10

The muscle changes in length and moves the load

Question 11

What is an isometric contraction?

Answer 11

The load is greater then the tension that the muscle is able to develop, the muscle never shortens or lengthens

Question 12

What are the two subdivisions of an isotonic contraction?

Answer 12

Concentric- shortening when contracting

Eccentric- lengthening when contracting

Question 13

What type of contraction is it when you pick up a glass?

Answer 13

Concentric

Question 14

What type of contraction is it when you are lowering a glass?

Answer 14

Eccentric

Question 15

When you are holding the glass, what kind of contraction is it?

Answer 15

Isometric

Question 16

What is a Sarcolemma, Sarcoplasm and the sarcoplasmic reticulum?

Answer 16

Sacrolemma- plasma membrane of muscle cells
Sarcoplasm- Cytoplasm of muscle cell
Sarcoplasmic reticulum- The endoplasmic reticulum of muscle cells

Question 17

Skeletal muscles has __ connnective tissue sheaths. The innermost sheath consistening of _____ connective tissue surrounds individual muscle fibers and is called ______.

Answer 17

3
Areolar
Endomysium

Question 18

The _____ is an individual connective tissue sheath surrounding groups of muscle fibers called ______.

Answer 18

Perimysium

Fascicles

Question 19

The outermost sheath called ______ wraps around the entire muscle to help transfer force generated by _______. It consists of _________ tissue

Answer 19

Epimysium
contraction
Dense regular

Question 20

What is a fascicle wrapped by?

Answer 20

Perimysium

Question 21

What is the difference between a sacrolemma and an endomysium?

Answer 21

Sacrolemma- cell membrane

Endomysin- what wraps around the cell membrane or sarcolemma

Question 22

What are myrofibirils?

Answer 22

Rod-like strands in a sarcomere

Question 23

What is a sarcomere?

Answer 23

The space between two Z Discs

Question 24

The smallest or ______ unit of a muscle fiber is called a ______. It is defined as a region between two successive _______

Answer 24

functional
sarcomere
Z Disc

Question 25

What is a thick filament made of in a sarcomere?

Answer 25

Myosin

Question 26

What is a thin filament made of in a sarcomere?

Answer 26

Actin

Question 27

What does the A band contain?

Answer 27

Thin and Thick filaments

Question 28

What does the I band contain?

Answer 28

Thin filaments ONLY

Question 29

What does the Z disc contain?

Answer 29

Thick and Thin filaments

Question 30

What happens to the length of the Actin and the Myosin when a muscle contracts?

Answer 30

Length does not change! | They only slide past each other

Question 31

What is contained in the center of the A band? What is this also known as?

Answer 31

only myosin | H-zone

Question 32

The dark line running down the H zone is made of ______ and is also known as ______.

Answer 32

Myosin | M-line

Question 33

What part of the Sarcomere can disappear or get smaller?

Answer 33

H-zone

Question 34

How does skeletal muscle contract?

Answer 34

Stomatic motor innervation direct to each fiber of the cell

Question 35

What is a neuromuscular junction?

Answer 35

where the nerve ending and the fiber meets

Question 36

What is a motor unit?

Answer 36

Motor neruon and all the fibers it innervates

Question 37

Which would be considered a large motor usage? A slap, or a touch?

Answer 37

Slap

Question 38

Does a large or small motor unit recruit less muscle cells?

Answer 38

small

Question 39

What is the gap between motor neurons and muscle fibers at the neuromuscular function?

Answer 39

Synaptic cleft

Question 40

What does ACh stand for?

Answer 40

Acetylcholine

Question 41

Epimysium of muscle is fused to the periosteum of a bone or cartilage

Answer 41

Direct attachment

Question 42

Connective tissue wraps extending beyond the muscle as a rope like tendon or sheet known as an aponeurosis

Answer 42

Indirect attachment

Question 43

Perfectly aligned repeating series of A bands and light I bands

Answer 43

Striations

Question 44

Coin-shaped sheet of proteins that anchor the thin filaments and connect myrofibrils to eachother

Answer 44

Z disc

Question 45

Lighter midregion were filaments do not overlap

Answer 45

H zone

Question 46

Line of protein myomesin that holds thick filaments together

Answer 46

M Line

Question 47

Thick filaments

Answer 47

Run the entire length of an A band

Question 48

Thin Filaments

Answer 48

Runs the entire length of the I band and into the pathway of the A band.

Question 49

A network of mooth endoplasmic reticulum surrounding each myofibril

Answer 49

Sarcoplasmic Reiculum

Question 50

A metabolic pathway that take ADP and a P and creates ATP

Answer 50

Direct phosphorlation

Question 51

A type of metabolic pathway that uses pyrubates and glycolosis and end in lactic acid

Answer 51

Anaerobic respiration

Question 52

A type of metabolic pathway that burns glucose using O2

Answer 52

Aerobic respiration

Question 53

What is it called when you reach the minimal stimulus in a muscle twitch?

Answer 53

Threshold stimulus

Question 54

What is a compound from ADP to ATP?

Answer 54

creatine phosphate

Question 55

A metabolic pathway that produces ATP and lactic acid

Answer 55

anaerobic respiration

Question 56

Metabolic pathway that produces water and C02 with ATP

Answer 56

Aerobic respiration

Question 57

Which muscle fiber is responsible for posture and for running long races?

Answer 57

slow oxidative

Question 58

What muscle fiber is responsible for sprinting a race?

Answer 58

fast oxidative

Question 59

What muscle fiber is responsible for lifting a heavy load for a short time?

Answer 59

fast glycolytic

Question 60

Where is smooth muscle found?

Answer 60

walls of hollow organs

Question 61

What makes smooth muscle different from skeletal muscle?

Answer 61

smooth is uninuclei and involuntary

Question 62

What is T tubule and 2 terminal cisternae?

Answer 62

Triad

Question 63

What is the part of the sarcolemma that carries action potential?

Answer 63

T Tubules

Question 64

What is the part of the sarcoplasmic reticiulum that stores calcium ions?

Answer 64

terminal cisternae

Question 65

Which band is dark and which is light?

Answer 65

A band | I band

Question 66

What is the name of the condition where you become rigid after death?

Answer 66

Rigor Mortis

Question 67

What causes you to seeze during rigor mortis?

Answer 67

Lack of ATP after death