Muscles

Question 1

Contractile

Answer 1

Muscle gets shorter creating a pulling force

Question 2

Voluntary

Answer 2

Conscious movement

Question 3

Involuntary

Answer 3

Not controlled by mental processing (subconscious)

Question 4

Striated

Answer 4

Strippy muscle

Question 5

Cardiomyocytes

Answer 5

Cardio = Heart
Myo = Muscles
Cytes = Cells

Question 6

Peristalsis

Answer 6

Rhythmic squeezing movement (Involuntary)

Question 7

Three types of muscle

Answer 7

Skeletal
Cardiac
Smooth

Question 8

Skeletal muscle (Location in body)

Answer 8

Whole body

Question 9

Cardiac muscle (Location in body)

Answer 9

Heart

Question 10

Smooth muscle (Location in body)

Answer 10

Digestive system
Internal organs

Question 11

Skeletal muscle (Function)

Answer 11

Locomotion

Question 12

Cardiac (Function)

Answer 12

Pump blood

Question 13

Smooth (Function)

Answer 13

To move things through the body

Question 14

Skeletal (Control)

Answer 14

Voluntary

Question 15

Cardiac (Control)

Answer 15

Involuntary.
Myogenic (self-generating)

Question 16

Smooth (Control)

Answer 16

Involuntary

Question 17

Striated muscle types

Answer 17

Skeletal
Cardiac

Question 18

Why are some muscles striated?

Answer 18

Gives the muscle strength

Question 19

Skeletal/Cardiac muscle differences

Answer 19

Heart cells interlink together resembling a mesh which gives additional strength to the heart walls

Question 20

Skeletal muscle (Speed of contraction)

Answer 20

Rapid

Question 21

Smooth muscle (Speed of contraction)

Answer 21

Slow, peristalsis

Question 22

Cardiac muscle (Speed of contraction)

Answer 22

Rapid

Question 23

Skeletal muscle (Speed of fatigue)

Answer 23

Rapid

Question 24

Smooth muscle (Speed of fatigue)

Answer 24

Slow

Question 25

Cardiac muscle (Speed of fatigue)

Answer 25

Slow

Question 26

Epimysium

Answer 26

Dense outer layer that holds the muscle together

Question 27

Perimysium

Answer 27

Connective tissue around fascicle to prevent them from breaking apart (protection)

Question 28

Blood vessel

Answer 28

Supplies blood to the organ

Question 29

Muscle fibre (function)

Answer 29

Cause constriction/relaxation of the muscle

Question 30

Fascicle

Answer 30

A bundle of muscle fibres

Question 31

Endomysium

Answer 31

Protects each muscle fibre in the fascicle

Question 32

Myofibril

Answer 32

Inside the muscle fibre. Contains 2 filaments. Contractile elements of the muscle fibre

Question 33

Sarcolemma

Answer 33

Plasma membrane, holds the myofibril in place, maintains the cells shape

Question 34

Sarcoplasmic reticulum

Answer 34

Smooth endoplasmic reticulum that stores and releases calcium ions (Ca⁺²)

Question 35

Sarcomere

Answer 35

1 section of a myofibril, like a single Lego piece. Repeats through the myofibril

Question 36

Two filaments inside the myofibril

Answer 36

Actin (Thin) Myosin (Thick)

Question 37

What is sliding filament theory

Answer 37

How the muscle is triggered to action. What causes muscle movement

Question 38

Action potential

Answer 38

Action potential is the electrical signals sent from the brain through the nerves Changes in voltage over a cell membrane