Chapter 1

Question 0

Smooth muscles are controlled by what nervous system

Answer 0

Autonomic

Question 1

What are the three types of muscle

Answer 1

Smooth
Cardiac
Skeletal

Question 2

Where are smooth muscles located

Answer 2

Walls of blood vessels

Throughout internal organs(digestion, urinary, birth canal)

Question 3

What nervous system controls cardiac muscles

Answer 3

Autonomic and endocrine systems

Question 4

Where are cardiac muscles located

Answer 4

The heart

Question 5

What nervous system controls skeletal muscles

Answer 5

Somatic nervous system

Question 6

There are more then ______ different skeletal muscles

Answer 6

600

Question 7

What is the outer connective tissue covering that surrounds the entire muscle

Answer 7

Epimysium

Question 8

What are small bundles of fibers wrapped in a connective sheath

Answer 8

Fasciculi

Question 9

What is the sheath of connective tissue that covers each muscle fiber

Answer 9

Endomysium

Question 10

A muscle fiber is also known as a what

Answer 10

Muscle cell

Question 11

What is the membrane that surrounds each muscle fiber

Answer 11

Plasmalemma

Question 12

What are the functions of the Plasmalemma

Answer 12

• transports metabolites from capillaries into the muscle fiber
• assists with transmission of an action potential
• helps maintain acid-base balance

Question 13

Plasmalemma and basement membrane make up what

Answer 13

Sarcolemma

Question 14

What is the site of energy production

Answer 14

Mitochondria

Question 15

What is inside the Plasmalemma, a cytoplasm, a gelatin like substance that fills the spaces between myofibrils

Answer 15

Sarcoplasm

Question 16

What are the functions of the transverse tubules( T tubules)

Answer 16

• extension of the Plasmalemma

- helps deliver impulses to myofibrils

Question 17

What the the function of the sarcoplasmic reticulum (SR)

Answer 17

The storage and release of CA+

Question 18

What are the contractile elements of the muscle fiber

Answer 18

Myofibril

Question 19

What is the functional unit of the myofibrils

Answer 19

Sarcomere

Question 20

What band is the light zone

Answer 20

I band

Question 21

What band is the dark zone

Answer 21

A band

Question 22

What zone is in the middle of the A band

Answer 22

H zone

Question 23

What line is in the middle of the H zone

Answer 23

M line

Question 24

What is in the center of the I band

Answer 24

Z disc

Question 25

What band only contains thin filaments (actin)

Answer 25

I band

Question 26

What band contains both thick filaments (myosin) and thin filaments (actin)

Answer 26

A band

Question 27

What only contains thick filaments (myosin)

Answer 27

H zone

Question 28

What serves as an attachment site for thick filaments, assists in stabilizing the sarcomere

Answer 28

M line

Question 29

What at the end of the sarcomere is the point if attachment for thin filaments stability

Answer 29

Z disc

Question 30

What is made up of 2 twisted strands where each strand has a globular head

Answer 30

Myosin

Question 31

Each thick filament contains many heads which form _______ to interact with the thin filaments

Answer 31

Cross bridges

Question 32

Thin filaments are composed of what three things

Answer 32

Actin Tropomyosin Troponin

Question 33

Where are thin filaments located

Answer 33

Between the thick filaments

Question 34

What is the protein that twists around the actin

Answer 34

Tropomyosin

Question 35

What protein that attaches to both actin and tropomyosin

Answer 35

Troponin

Question 36

The action potential arrives at the ______ and travels down the axon to the axon ________

Answer 36

Dendrites | Terminal

Question 37

What are the two types of muscle fibers

Answer 37

Slow twitch fibers (type 1) | Fast twitch fibers (type 2)

Question 38

The proportion of type 1 and type 2 fibers in an individuals _____ and _____ muscles are usually similar

Answer 38

Arm | Leg

Question 39

The order of motor unit recruitment is directly related to the _____ ______ size

Answer 39

Motor neuron

Question 40

What kind of contraction force is developed while the muscle is shortening

Answer 40

Concentric

Question 41

What kind of contraction force in generated while the muscle is lengthening

Answer 41

Eccentric

Question 42

What kind of contraction force is generated but the muscle of the muscle is unchanged

Answer 42

Isometric

Question 43

what type of fibers play a major role in high intensity exercise

Answer 43

type 2a

Question 44

what types of fibers are activated when the force demanded of a muscle is high

Answer 44

type 2x

Question 45

Motor units give what kind of response

Answer 45

all or nothing response