Muscle

Question 1

skeletal muscle

Answer 1

strong, quick discontinous voluntary contraction, straited, nucleus are off to side

Question 2

cardiac muscle

Answer 2

strong quick continous, involuntary contraction, striated, multinucleated, nuclei are centered at intercalated disks

Question 3

smooth muscle

Answer 3

weak,slow involuntary contraction, not triated and nuclei are centered

Question 4

myoblasts

Answer 4

come to gether and fuse from mesenchymal cells to produce myotube which mature to form muscle fiber

Question 5

thin filament

Answer 5

made up of G actin and F actin in a double helix

Question 6

troponin I

Answer 6

inhibitor covers up the actin sites

Question 7

troponin T

Answer 7

binds actin

Question 8

troponin C

Answer 8

interacts with calcium to help uncover the actin sites

Question 9

thick filament

Answer 9

made up of heavy and light chains and myosin headsq

Question 10

what is the Z disk made up of?

Answer 10

alpha actinin

Question 11

what is the functional subunit of skeletal muscles

Answer 11

sarcomere

Question 12

the smooth Er is called what in skeletal muscle

Answer 12

sarcoplasmic reticulum

Question 13

where does the triad occur in skeletal muscle

Answer 13

AI junction

Question 14

what is the neurotransmitter for skeletal muscle ?

Answer 14

acetocholine

Question 15

around each muscle cells is ______________-. If we wrap 10-20 bundles of muscle this wrapping is called_________________________. The bundle is called ______________. The layer that wraps a bunch of fasicles is called ______________-

Answer 15

endomysium, perimysium, fasicle, epimysium

Question 16

muscle cell + neuron + neuron branches

Answer 16

motor unit

Question 17

Where is the T tubule (diad) in the cardiac muscle ?

Answer 17

Z disk

Question 18

What are at the intercalated disks

Answer 18

gap juntions and desmosomes

Question 19

what is the function of dense bodies in smooth muscle cell >

Answer 19

form achoring points all through the smooth muscle so when it contracts it just scrunches up

Question 19

Explain the location of the three types of muscle

Answer 19

Cardiac-wall of heart
Skeletal associated with bones
Smooth muscle-walls of hollow organs and blood vessels

Question 20

Explain the nuclei of the types of muscle

Answer 20

Skeletal many peripheral and flattened
Cardiac 1-2 corn trail pump
Smooth muscle-one central nucleus

Question 21

Explain the cell diameter of the muscle types

Answer 21

Skeletal largest, cardiac intermediate, smooth muscle smallest

Question 22

Which muscle types have striations

Answer 22

Skeletal and muscle

Question 23

Which muscle types have sarcoplasmic reticulum

Answer 23

Skeletal and cardiac

Question 24

Does smooth muscle have t tubules

Answer 24

NO

Question 25

Which muscle types are involuntary

Answer 25

Smooth and cardiac

Question 26

Which muscle type is slow in contraction

Answer 26

Smooth

Question 27

Capillary supply is highest in what type of muscle

Answer 27

Cardiac

Question 28

Which type of muscle stains soe basophilic in addition to eosinophilic

Answer 28

Smooth

Question 29

Which muscle type has the ability to synthesize collagen and elastin

Answer 29

Smooth