Musclar System

Question 1

Three types of muscle in the body

Answer 1

1. caridac
2. smooth
3. skeletal

Question 2

Found only in the heart,
Consists of short, branching fibres that fit together at intercalated discs
Appears stripped or striated
Involuntary

Answer 2

Cardiac muscle

Question 3

Found in the digestive tract, blood vessels, bladder, airways and uterus
Nonstraited
Involuntary

Answer 3

Smooth muscle

Question 4

Attached to bone and causes movement of the body

Voluntary muscle cause it can be contracted

Answer 4

Skeletal muscle

Question 5

A skeletal muscle cell is

Answer 5

Muscle fibres

Question 6

Delicate connective tissue that covers each muscle fibres

Answer 6

Endomysium

Question 7

Muscle fibres are groups in bundle called

Answer 7

Fasiciles

Question 8

A sheath of tougher connective tissue is

Answer 8

Perimysium

Question 9

Connective tissue that surrounds the muscle as a whole and binds all the muscle fibres together

Answer 9

Epimysium

Question 10

Surrounds the muscle outside the piemysium

Answer 10

Fascia

Question 11

Muscle fibres merge with the periosteum of the bone forming a strong attachment

Answer 11

Direct attachment

Question 12

The epimysium extends past the muscle as a tendon and then the tendon merges with the periosteum

Answer 12

Indirect attachment

Question 13

Thin filament

Answer 13

Actin

Question 14

Thick filament

Answer 14

Myosin

Question 15

Where muscle contraction occurs

Answer 15

Sarcomeres

Question 16

To contract a skeletal muscle must be stimulated by

Answer 16

Motor neuron

Question 17

Connection between a motor neruron and muscle fibres is

Answer 17

Neuromuscular junction

Question 18

Form of food poisoning usually acquired from eating improperly canned foods

Answer 18

Botulism

Question 19

Body produces antibodies against receptors AcH

Answer 19

Myasthenia

Question 20

Causes motor neurons to fire excessively

Answer 20

Tetanus or lockjaw

Question 21

Anesthesthia to relax skeletal muscles

Answer 21

Curare

Question 22

Muscle contractions that shorten the muscle

Answer 22

Isotonic contractions

Question 23

Muscles contract by increasing tension while the length stays the same

Answer 23

Isometric conctractions

Question 24

Different ways muscle requires energy

Answer 24

1. aerobic respiration of fatty acids
2. creatine phosphate
3. anaerboric respiration of glucose
4. aerobic respiration of glucose

Question 25

At rest, muscles obtain most of their energy by

Answer 25

Metabolizing fatty acids | Aerobic respirtation to break down fatty acids for energy

Question 26

When beginning to exercise how does muscle obtain their energy

Answer 26

Oxygen levels drop so the muscles break down creatine phosphate (stored in the muscle)

Question 27

If exercise continues, CP is exhausted, so how does muscle get their energy supply

Answer 27

-anaerobic respiration of glucose | Can lead to muscle fatigue at the byproduct of Glycogen that's stored in the muscle, is lactic acid

Question 28

After 10 minutes of exercise how do the muscles receive energy

Answer 28

-switches back to aerobic respiration of glucose

Question 29

The extra oxygen used in the process of covereting lactic acid back to glucose is

Answer 29

Oxygen debt

Question 30

The role of muscle

Answer 30

Move a body part

Question 31

Referees to the end of the muscle that attaches to the more stationary bone

Answer 31

Origin of muscle

Question 32

The thick midsection of the muscle

Answer 32

Belly

Question 33

The end of the muscle that attaches to the more movable bone

Answer 33

Insertion

Question 34

The main muscle triggering the movement is called

Answer 34

Prime movers

Question 35

The muscle that assist are called

Answer 35

Synergistic

Question 36

Muscle balancing these movements are

Answer 36

Anatagonists

Question 37

What's the main role of the anatagoinst

Answer 37

It works to moderate the speed or range of movement, helping prevent joint injury

Question 38

When muscles enlarge due to strength training

Answer 38

Hypertrophy

Question 39

Muscles that have shrunk

Answer 39

Atrophy

Question 40

Muscles are name by their shape, size, location , number of origins

Answer 40

True

Question 41

A single muscle cell is called a

Answer 41

Muscle fibres

Question 42

What occurs when a muscle contracts

Answer 42

After forming cross bridges with the action myofilament, the myosin myofilament propels the action myofilament toward the centre of the sarcomere

Question 43

A continuous state of parietal muscle contraction in which muscles are at their optimal resting length is called

Answer 43

Muscle tone

Question 44

At rest, muscles obtain most of their energy by metabolizing

Answer 44

Fatty acids

Question 45

The end of a muscle that's attached to the more mobile bone is called

Answer 45

Insertion

Question 46

The prefix Bi means

Answer 46

Has two origins

Question 47

A tendon is an extension of what muscle component

Answer 47

Epimysium

Question 48

During the process of muscle contraction, the sarcoplasmic reticulum is stimulated to release which substance

Answer 48

Calcium

Question 49

Which muscle is often called the praying muscle

Answer 49

Sternocleidomatoid

Question 50

The prime mover for knee extension is the

Answer 50

Quadriceps femoris