Chapter 9 Muscles

Question 1

Describe blood supply in muscles

Answer 1

arteries deliver oxygen and nutrients to our muscles

veins carry waste away from the muscles

Question 2

Smooth muscle tissue

Answer 2

not striated

involuntary

Question 3

Skeletal muscle tissue

Answer 3

striations

voluntary

Question 4

Cardiac muscle tissues

Answer 4

striated

involuntary

Question 5

Contractility is the

Answer 5

ability to shorten

Question 6

Extensibility is the

Answer 6

ability to be extended or stretched

Question 7

Elasticity is the

Answer 7

ability to recoil

Question 8

what are the 3 things muscles maintain

Answer 8

posture

stabilize joints

generate heat

Question 9

Structure and Organization of skeletal muscles

Answer 9

Muscle is the organ

muscles is covered externally by the epimysium

we have hundreds of thousands of muscle cells

Question 10

What are the three conncective tissue sheaths

Answer 10

epimysium

perimysium

endomysium

Question 11

espimysium

Answer 11

epi means above or upon

dense regular connective tissue

surrounds the muscle

Question 12

perimysium

Answer 12

surrounds fascicle

fibrous connective tissue

Question 13

endomysium

Answer 13

surrounds muscle fibers

reticular fibers

Question 14

Be able to label identify:

thick filaments

think filaments

z discs/lines

M line

I band

A band

H zone

Question 15

what is the functions of the sarcoplasmic reticulum?

Question 16

where do the t tubules conduct impulse?

Answer 16

the conduct muscle impulses to the deepest region of the muscles

Question 17

What do t tubules impulses cause release of?

Answer 17

calcium

Question 18

explain step by step what happens when a stimulus or action potential is received by an axon terminal

(make sure to include how contradiction ends in explaination)

Question 19

What prevents continued muscle fiber contraction?

Answer 19

destroying ACh will prevent continued contraction

Question 20

Understand what happens if AChE is inhibited or blocked

Question 21

Understand what happens if there is a lack of ACh receptors

Answer 21

it will be harder to receive a contraction or it’s not going to contract at all

Question 22

Which disease is associated with a lack of ACh receptors?

Answer 22

myasthenia gravis

no cure or treatment to help

muscle weakness

double vision

droopiness of eyelids

difficult time swallowing/speaking

Question 23

mylofilaments

Answer 23

myosin and actin

Question 24

myosin is the

Answer 24

thick filament

Question 25

actin is the

Answer 25

thin filament

Question 26

myosin makes up the

Answer 26

A band

Question 27

actin makes up the

Answer 27

I band

Question 28

types of muscle differ in

Answer 28

structure location function means of activation

Question 29

skeletal and smooth muscle cells are both

Answer 29

elongated

Question 30

muscle contractions depend on

Answer 30

myofilaments myosin and actin

Question 31

Skeletal muscle tissue is packaged in skeletal musicles that

Answer 31

attach to and cover the bony skeleton

Question 32

skeletal muscle tissues are responsible for our

Answer 32

overall motility

Question 33

skeletal muscles contract rapidly but

Answer 33

tire easily

Question 34

cardiac muscle tissues are found

Answer 34

in the heart

Question 35

sarcolemma

Answer 35

is a plasma membrane of a muscle cell

Question 36

sarcoplasm

Question 37

cardiac muscle tissues contract

Answer 37

fairly steady rate set by the hearts pacemaker

Question 38

smooth muscle tissue is found in

Answer 38

the walls of hollow visceral organs (stomach, bladder, intestines, respiratory)

Question 39

smooth muscle tissues force

Answer 39

food and other substances through body canals

Question 40

functional characteristics of muscle tissues excitability

Question 41

functional characteristics of muscle tissues irrability

Answer 41

ability to receive and respond to stimuli

Question 42

functional characteristics of muscle tissues contractility

Answer 42

ability to shorten

Question 43

functional characteristics of muscle tissues extensibility

Answer 43

ability to be extended or stretched

Question 44

functional characteristics of muscle tissues elascisity

Answer 44

ability to recoil

Question 45

skeletal muscle function is responsible for

Answer 45

all locomotion

Question 46

cardiac muscle function is responsible for

Answer 46

pushing blood through the whole body

Question 47

smooth muscle function is to maintain

Answer 47

blood pressure and squeeze things through organs

Question 48

fascicle is

Answer 48

a portion of the muscle

Question 49

multiple fasciles make a

Answer 49

muscle

Question 50

fascicle is wrapped in

Answer 50

perimysium

Question 51

fasicle is made up of

Answer 51

muscle fibers

Question 52

a muscle fiber is a

Answer 52

cell

Question 53

a muscle cell is surrounded by the

Answer 53

endomysium

Question 54

muscle fibers are multi-

Answer 54

micleated

Question 55

muscle fibers have

Answer 55

stridations

Question 56

muscle fibers are made of

Answer 56

myofibril or fibril

Question 57

myofibril

Answer 57

is a rod like structure that plays a role in contractions

Question 58

muscle cells and muscle fibers

Answer 58

are the same thing

Question 59

sarcomere is the

Answer 59

a band and i band

Question 60

sarcomere make up striations

Answer 60

sacromere are the smallest

Question 61

sarcomere are the smallest

Answer 61

contractile unit

Question 62

thick filaments have

Answer 62

heads and tails

Question 63

tails are

Answer 63

polywoven

Question 64

heads are

Answer 64

two smaller poly

Question 65

two heads are referenced as

Answer 65

cross bridges

Question 66

thin filaments are composed of

Answer 66

actin

Question 67

tropomyosin and troponin are bound to

Answer 67

actin

Question 68

sarcoplasmic reticulum (p 287)

Question 69

synaptic cleft seperates

Answer 69

axon terminal and sarcoplasm of muscle fiber