Muscle Anatomy

Question 1

Agonistic

Answer 1

muscle contracts

Question 2

antagonistic

Answer 2

muscle relaxes or lengthens

Question 3

What are the 2 connective tissue’s

Answer 3

tendons and ligaments

Question 4

what are tendons

Answer 4

connective tissue’s that link muscles to bone

Question 5

what are ligaments

Answer 5

connective tissue’s that link bone to bone

Question 6

what are 3 types of muscles cells

Answer 6

cardiac skeletal and smooth

Question 7

where are cardiac muscles found

Answer 7

only found in heart covering the walls

Question 8

how many nuclei do cardiac muscles have

Answer 8

1

Question 9

what are cardiac muscles like

Answer 9

tubular , striated (have stripes), branched

Question 10

cardiac muscles are _____ controlled

Answer 10

involuntarily

Question 11

whats cardiac muscles controlled by

Answer 11

involuntary control , controlled by autonomic nervous system

Question 12

what is a autonomic nervous system

Answer 12

a system that regulates involuntary physiological processes

Question 13

where are smooth muscles found

Answer 13

lined inside blood vessels, tubes and walls of internal organs

Question 14

ex of where smooth muscles are found

Answer 14

esophagus, stomach , hollow organs

Question 15

how many nuclei do smooth muscles have

Answer 15

1

Question 16

what are smooth muscles like

Answer 16

non-striated and spindle shaped

Question 17

smooth muscles are _____ contracted

Answer 17

involuntarily

Question 18

what are smooth muscles controlled by

Answer 18

autonomic nervous system

Question 19

What are Flexor muscles

Answer 19

antagonistic muscle that bend a limb

Question 20

what are extensors muscles

Answer 20

antagonistic muscles that straightened a limb

Question 21

antagonistic muscles are muscles that _____

Answer 21

cause movement in opposite directions

Question 22

Where are skeletal muscles found

Answer 22

all over body attached to bones

Question 23

what are skeletal muscles

Answer 23

muscles found all over body that are attached to bones that aid in movement

Question 24

How many nuclei do skeletal muscles have

Answer 24

many

Question 25

what are skeletal muscles like

Answer 25

tubular and striated , very long

Question 26

skeletal muscles are have ____ contractions

Answer 26

voluntary

Question 27

what are skeletal muscles controlled by

Answer 27

central nervous system

Question 28

what di skeletal muscles do

Answer 28

support the body and aid in locomotion (movement)

Question 29

components of skeletal muscles biggest to smallest

Answer 29

muscle > muscle fibre bundle> muscle fibre > myofibril> myofilaments

Question 30

what are muscles made up of

Answer 30

bundles of muscle fibres

Question 31

what are muscle fibre bundles made of

Answer 31

muscle fibres

Question 32

what are muscle fibres made up of

Answer 32

myofibril

Question 33

what are myofibrilles made up of

Answer 33

myofilaments

Question 34

where are skeletal muscles enclosed

Answer 34

within a membrane called sarcolemma

Question 35

whithin the muscle fibres are tiny ____ bundled together

Answer 35

myofilaments

Question 36

what are myofilaments

Answer 36

threadlike structures of contractile proteins found within the muscle, smallest building block of muscles

Question 37

what are the two kinds of myofilaments

Answer 37

thin and thick

Question 38

what are thin myofilaments composed of

Answer 38

actin

Question 39

what are thick myofilaments composed of

Answer 39

myosin

Question 40

thin and thick myofilaments _____

Answer 40

overlap to produce a striped apperance = sarcomere

Question 41

whats a sarcomere

Answer 41

basic , repeating unit of a muscle cell , functional/ contractile unit , building block of muscles

Question 42

Whats a Z line

Answer 42

the length of the muscle fibres that anchors the actin fibres , sides of sarcomere

Question 43

What does a Z line to a Z line measure

Answer 43

one sarcomere

Question 44

Whats a A band

Answer 44

full length of the thick myosin filaments including the overlapped part with actin filaments (dark band)

Question 45

whats a I band

Answer 45

thin actin filaments (light band)

Question 46

Whats a H zone

Answer 46

in middle of A band where only thick filaments are found

Question 47

Whats a M line

Answer 47

center of H zone where thick filaments are bound in the center , mid of sarcomere

Question 48

What happens in M line

Answer 48

cross-bridges where thick n thin myofilaments overlap and attach to eachother, myosin (thick) heads attach onto actin (thin) filaments

Question 49

what does myo infer

Answer 49

muscle