Muscular System

Question 0

Voluntary and responsible for movement of the body

Answer 0

Skeletal muscles

Question 1

3 types of muscle tissue

Answer 1

Skeletal
Smooth
Cardiac

Question 2

Involuntary, the intestines, blood vessels, organs, gall bladder and uterus

Answer 2

Smooth muscles

Question 3

Only in the heart

Answer 3

Cardiac muscle

Question 4

What are the 4 principal characteristics.

Answer 4

Excitability
Contractiliy
Extensibility
Elasticity

Question 5

The ability of muscle tissue to receive and respond to stimuli

Answer 5

Excitability

Question 6

The ability of the muscle tissue to actively generate force to shorten and thicken

Answer 6

Contractility

Question 7

The ability of muscle tissue to be stretched

Answer 7

Extensibility

Question 8

The ability of muscle tissue to return to its original shape

Answer 8

Elasticity

Question 9

What are the three functions of the muscular system

Answer 9

Motion-reflexive and voluntary
Maintenance of posture
Heat production

Question 10

Is a single cylindrical muscle cell

Answer 10

Muscle fiber

Question 11

Connective tissue sheath surrounding the muscle

Answer 11

Epimysium

Question 12

A bundle of muscle fibers

Answer 12

Fasicle

Question 13

Connective tissue surrounding bundles of muscles fibers.(fasicles)

Answer 13

Perimysium

Question 14

Connective tissue surrounding each little muscle fiber

Answer 14

Endomysium

Question 15

Skeletal Muscles that use oxygen to contract (long distance running)

Answer 15

Slow twitch

Question 16

Skeletal Muscles that work using anaerobic metabolism (short burst of energy sprinting)

Answer 16

Fast twitch

Question 17

Responsible for muscle contraction. Muscle fibers composed of cylindrical organelles and composed of thin and thick filaments

Answer 17

Myofibrils

Question 18

Thin- light bands contain only actin and are called I bands

Answer 18

Actin

Question 19

Thick- dark bands, these are A bands and are only located in the H zone

Answer 19

Myosin

Question 20

The contractile unit- z line to z line

Answer 20

Sarcomere

Question 21

Where the nerve attaches to the muscle fiber to contract.

Answer 21

Neuromuscular junction

Question 22

At rest there is a slightly negative charge inside the cell membrane as compared to the outside the cell membrane

Answer 22

Resting potential

Question 23

When a muscle contracts and the distance between the end of the muscle changes

Answer 23

Isotonic contractions

Question 24

When a muscle contracts and the ends of the muscle do not move or the body part that the muscle affects does not move

Answer 24

Isometric contractions

Question 25

A sustained partial contraction of portions of a skeletal muscle

Answer 25

Muscle tone

Question 26

A state of wasting away of muscles

Answer 26

Muscular atrophy

Question 27

The reverse of atrophy it is an increase in diameters of muscle fibers more forceful contractions produce hypertrophy new fibers are not created after birth

Answer 27

Muscular hypertrophy

Question 28

A reddish pigment which store oxygen until needed for muscle contraction

Answer 28

Myoglobin

Question 29

When muscles become depleted of oxygen due to excessive use. the respiratory system cannot keep up. - an increased heart rate and breathing

Answer 29

Oxygen debt

Question 30

a sustained partial contraction of of portions of a skeletal muscle

Answer 30

Muscle tone

Question 31

A condition of prolonged muscle contraction where oxygen debt becomes extreme - excessive activity, malnutrition , cardio vascular disturbances, respiratory disturbances

Answer 31

Muscle fatigue

Question 32

Is a system of sensory and motor nerve activity that provides information as to the position and rate of movement of different body parts to the central nervous system

Answer 32

Proprioception

Question 33

Are cells that are distributed throughout the belly of the muscle. - they send information to the nervous system about the muscles length

Answer 33

Muscles spindles

Question 34

Transmits information regarding the tension in the muscle to the brain and spinal cord

Answer 34

Golgi tendon organs

Question 35

The attachment of a muscle tendon to the stationary Bone (only moves a little)

Answer 35

Origin

Question 36

The attachment of the other muscle tendon to the more mobile bone - I move

Answer 36

Insertion

Question 37

When isolated and specific actions occurs, the muscle is responsible for the action (prime mover)

Answer 37

Agonist

Question 38

When the prime mover contracts, there is a muscle that causes an opposite action

Answer 38

Antagonist

Question 39

Muscles that assists the prime mover

Answer 39

Synergist

Question 40

What are the 7 different naming criteria for understanding the muscles

Answer 40

Location, shape, relative size, direction, origins/insertions, number of origins, actions

Question 41

Muscle consists of skeletal muscle tissue, connective tissue and nerve tissue and blood

Answer 41

Vascular tissue

Question 42

Muscle shortens as it contracts

Answer 42

Concentric

Question 43

Muscle lengthens as it contracts

Answer 43

Eccentric