Study Guide - Chapter 8 Anatomy

Question 1

what chemical helps to regenerate ATP?

Answer 1

creatine phosphate

Question 2

Skeletal muscles are responsible for moving:

Answer 2

bones

Question 3

Muscles fibers are made of individual fibers (not filaments) are called

Answer 3

myofibrils

Question 4

Connective tissue that surrounds fascicles is

Answer 4

perimysium

Question 5

Poisons such as botulism that prevents the release of acetylcholine would cause muscles to:

Answer 5

stay relaxed

Question 6

what type of muscles are primarily voluntary?

Answer 6

skeletal muscles

Question 7

what type of muscles are found in the heart?

Answer 7

cardiac muscles

Question 8

What type of muscles are found in the digestive tract?

Answer 8

smooth muscles

Question 9

What neurotransmitter is associated with the muscles?

Answer 9

acetylcholine

Question 10

what cell organelle provides the ATP needed for muscle activity?

Answer 10

mitochondria

Question 11

The gap between the nerve and the muscle is called the:

Answer 11

synaptic cleft

Question 12

what is hypertrophy?

Answer 12

makes muscles big

Question 13

what is atrophy?

Answer 13

makes muscles small

Question 14

a person who has a disease the inhibits the production of cholinesterase would have what kind of symptoms?

Answer 14

muscles that stay contracted

Question 15

Cholinesterase is an enzyme that breaks down

Answer 15

acetylcholine

Question 16

during a muscle contraction, cross-bridges form between what two structures?

Answer 16

actin and myosin

Question 17

In a sarcomere, the i-band is made of:

Answer 17

actin

Question 18

In a sarcomere, the a-band is made of:

Answer 18

myosin

Question 19

The dark and light fibers of the muscles give cells a ___ appearance

Answer 19

striated

Question 20

The energy source for muscle contraction is:

Answer 20

ATP

Question 21

Vesicles in the motor neuron store what substance?

Answer 21

acetycholine

Question 22

When recruitment occurs, the number of motor units being activated increase or decrease?

Answer 22

increase

Question 23

Sustained contraction of individual fibers, even when muscle is at rest is known as:

Answer 23

muscle tone

Question 24

The immovable ends of the muscle is the

Answer 24

origin

Question 25

Muscle fatigue is likely due to a buildup of:

Answer 25

lactic acid

Question 26

a sacromere is defined as the region between two

Answer 26

2- Z lines

Question 27

The condition where a body becomes stuff after death is called

Answer 27

rigor mortis

Question 28

When ATP has been used, it becomes

Answer 28

ADP and phosphate

Question 29

What is a motor unit?

Answer 29

motor neuron and muscle fiber cell

Question 30

What type of tissue surrounds the entire muscle?

Answer 30

epimysium

Question 31

Which type of connective tissue surrounds fascicles (bundles)?

Answer 31

perimysium

Question 32

The substance that crosses the gap between a neuron and a muscle fiber is the

Answer 32

neurotransmitter

Question 33

Tendons connect ____ to _____

Answer 33

muscles to bones

Question 34

Bundles of muscle fibers are called

Answer 34

fasicles

Question 35

The minimum amount of stimulus required for a muscle contraction to occur is the

Answer 35

threshold stimulus

Question 36

what model explain how muscles contract?

Answer 36

sliding filament theory

Question 37

are a-bands dark or light?

Answer 37

dark

Question 38

are i-bands dark or light?

Answer 38

light

Question 39

the muscle fiber membrane is called the:

Answer 39

sarcolemma

Question 40

the transport network of the muscle is called the:

Answer 40

sarcoplasmic reticulum