Muscle Tissue

Question 1

Excitability

Answer 1

can be stimulated to conduct AP

Question 2

contractility

Answer 2

can shrink

Question 3

extensibility

Answer 3

can shrink back to starting point

Question 4

elasticity

Answer 4

can stretch beyond starting point

Question 5

Endomysium surrounds

Answer 5

muscle fiber (cell)

Question 6

Epimysium surrounds

Answer 6

Muscle

Question 7

Perimysium surrounds

Answer 7

Fasicle (cell bundle)

Question 8

Sarcolemma

Answer 8

cell membrane

Question 9

AP travels through it to sarcoplasmic reticulum

Answer 9

T-tubule

Question 10

muscle origin

Answer 10

more stationary

Question 11

muscle insertion

Answer 11

more mobile

Question 12

muscle fuses on top of bone

Answer 12

fleshy attachment

Question 13

flat tendon for flat muscle

Answer 13

aponeurosis

Question 14

individual organ

Answer 14

muscle

Question 15

individual cell

Answer 15

muscle fiber

Question 16

bundle of proteins

Answer 16

myofilaments

Question 17

contractile organelle

Answer 17

myofibrils

Question 18

bundle of muscle cells

Answer 18

fasicle

Question 19

Process of muscle contraction

Answer 19

AP flows along t-tubules in sarcolemma to get to sarcoplasmic reticulum. Cell floods with Ca2+, which binds to troponin, causing tropomyosin to move over. This allows myosin to attach to and pull on actin, causing the space between z-disks to contract, the sarcomere to contract, and the myofibril, fiber, fasicle, and muscle to follow suit.