Chapter 1

Question 1

How many types of muscles

Answer 1

3
skeletal
smooth
cardiac

Question 2

is skeletal muscle v or i

Answer 2

voluntary

Question 3

is smooth muscle v or I

Answer 3

involuntary

Question 4

is cardiac muscle v or I

Answer 4

involuntary

Question 5

what does skeletal muscle look like

Answer 5

striated

Question 6

what is skeleton muscle surrounded by

Answer 6

epimysium

Question 7

what is fasciculi

Answer 7

many bundles

Question 8

what surrounds fascicule

Answer 8

perimysium

Question 9

what is the muscle fiber surrounded by

Answer 9

endomysium

Question 10

what is muscle fiber made of

Answer 10

myofibrils divided into sarcomeres

Question 11

plasmalemma

Answer 11

cell membrane

Question 12

what does plhasmalemma do

Answer 12

fuse w tendon

Question 13

tendons connect

Question 14

ligaments limit

Answer 14

movement

Question 15

action potential

Question 16

what does plasmalemma maintain

Answer 16

pH and transports nutrients

Question 17

satellite cells

Question 18

what’s inside cytoplasm

Answer 18

organelles
mitochondria

Question 19

mitochondria

Answer 19

cellular respiration takes place
in the presence of oxygen

Question 20

mitochondria in muscle cells vs regular

Answer 20

bigger
more

Question 21

glycogen

Answer 21

sugar
chains of glucose put together
ready available energy source

Question 22

what produces more atp glycogen or glucose

Answer 22

glycogen

Question 23

where is glycogen stored

Answer 23

muscle
some stored in liver

Question 24

how much atp does fat produce

Answer 24

a lot
but not efficient

Question 25

T-tubes serve as

Answer 25

extension of plasmalemma

Question 26

what do t tubes carry

Answer 26

action potential deep into muscle fiber

Question 27

sarcoplasmic reticulum

Answer 27

calcium storage

Question 28

action potential =

Answer 28

all or nothing

Question 29

myofibrils

Answer 29

hundredds to thousands per fiber

Question 30

sarcomeres

Answer 30

basic contractile element

Question 31

z-disk in sarcomere

Answer 31

common boundary structure

Question 32

actin = thick or thin

Answer 32

thin

Question 33

myosin = thick or thin

Answer 33

thick

Question 34

I bands contain

Answer 34

actin

Question 35

h zone contains

Answer 35

myosin

Question 36

what band contains acting and myosin

Answer 36

a band

Question 37

what does titin act as

Answer 37

stabilizer

Question 38

actin composed of three proteins

Answer 38

actin tropomyosin troponin

Question 39

actin

Answer 39

myosin binding site

Question 40

tropomyosin

Answer 40

covers active site ate rest

Question 41

troponin (anchored to actin)

Answer 41

moves tropomyosin

Question 42

tropomyosin in the way =

Answer 42

relaxation bc myosin cant attach

Question 43

where is actin anchored at

Answer 43

z disk

Question 44

what is actin equally spaced out by

Answer 44

titin

Question 45

what does titin act like

Answer 45

spring keeps as rigid as can be helps w efficient movement

Question 46

what does titan stabilize

Answer 46

sarcomeres and centers myosinh

Question 47

what does titan prevent

Answer 47

overstretching

Question 48

stabilizer protein=

Answer 48

titan

Question 49

sliding filament theory

Question 50

motor unit

Answer 50

consists of single alpha motor neuron and all fibers it innervates

Question 51

more operating motor units=

Answer 51

more contractile force

Question 52

neuromuscular junction

Answer 52

consists of synapse between alpha motor neuron and muscle fiber

Question 53

nerve innervates

Answer 53

more than one muscle fiber

Question 54

large motor unit is

Answer 54

more power

Question 55

small motor unit helps w

Answer 55

small detail and precise

Question 56

neuromuscular junction serves as site for

Answer 56

communication between neuron and muscle

Question 57

neurotransmitter

Answer 57

released from nerve to cause contraction

Question 58

dendrites

Answer 58

rececive infö from other cells

Question 59

axons

Answer 59

send info

Question 60

where does action potential start

Answer 60

brain

Question 61

where does AP start

Answer 61

brain

Question 62

when the AP arrives at the axon terminal what does it release

Answer 62

ACh

Question 63

how do we relax the muscle

Answer 63

reabsorb calcium in sarcoplasmic reticulum

Question 64

where are calcium ions stored

Answer 64

sarcplasmic reticulum

Question 65

How does AP arrive at SR

Answer 65

from T tubule

Question 66

what happens in a relaxed state

Answer 66

no actin myosin interaction occurs at binding site

Question 67

what is the thinnest looking under a microscope

Answer 67

I band

Question 68

why do muscles get bigger when we exercise

Answer 68

more sarcomeres has to pull more filaments

Question 69

how come muscles don't get big quickly and easily

Question 70

what do we need for full muscle contraction

Answer 70

atp

Question 71

where do we make atp

Answer 71

mitochondria

Question 72

where do we get sugar from

Answer 72

carbohydrates generally from plants

Question 73

type 1 muscle fiber type

Answer 73

50% of fibers in avg muscle

Question 74

slow twitch =

Answer 74

type 1

Question 75

fast twitch

Answer 75

type 2

Question 76

gastrocnemius = fast or slow twitch

Answer 76

type 1 (slow) can walk all day w/ out getting tired