Muscle

Question 1

plasmalemma of the mucks cells, external to this cell membrane is a well developed basement membrane

Answer 1

sarcolemma

Question 2

cytoplasm of muscle cells excluding myofibrils

Answer 2

sarcoplasm

Question 3

smooth endoplasmic reticulum of muscle cells

- calcium storage and release

Answer 3

sarcoplasmic reticulum

Question 4

thick layer of collagenous connective tissue that separates large bundles of muscle

Answer 4

epimysium

Question 5

collagenous connective tissue that separates smaller bundles of muscle cells called fascicles

Answer 5

perimysium

Question 6

bundle of muscle cells bounded by perimysium

Answer 6

fascicles

Question 7

thinner layer of connective tissue that separates individual muscle cells

Answer 7

endomysium

Question 8

voluntary muscle

Answer 8

skeletal muscle

Question 9

skeletal muscle is generally connected to bone via a piece of connective tissue called a

Answer 9

tendon

DICT

Question 10

another word meaning that each striated muscle cell contains multiple nuclei

Answer 10

syncytail

Question 11

each individual muscle cell is called a

Answer 11

muscle fiber

or myofiber

Question 12

actual contractile apparatus of muscles

Answer 12

sarcomere

Question 13

the sarcomeres contain filaments of _____ and _____ that interact to cause contraction of muscle cells

Answer 13

actin and myosin

Question 14

thin filaments

Answer 14

actin

Question 15

thick filaments

Answer 15

myosin

Question 16

area containing overlapping actin and myosin filaments except in H band region

Answer 16

A band
anisotropic band
dark

Question 17

area of myosin filaments where there is no over lap of actin filaments

Answer 17

H band

zone

Question 18

thin actin filaments + Z line

no myosin

Answer 18

I band
isotropic band
light

Question 19

where actin filaments of adjacent sarcomeres are anchored

Answer 19

Z line

Question 20

formed by connections between the central portions of adjacent myosin filaments

Answer 20

M line

Question 21

the action potential causes the sarcoplasmic reticulum to release

Answer 21

Ca +2 ions

Question 22

the muscle cells also contain ______ which is an oxygen binding protein similar to hemoglobin and has a high affinity for oxygen

Answer 22

myoglobulin

Question 23

cardiac muscle are different from skeletal in what ways

Answer 23

1 nucleus 
branched 
centrally located nucleus 
held together by intercalated disks
involuntary 
shorter in length

Question 24

specialized junctional complexes that bond cardiac muscle cells together

Answer 24

intercalated disks

Question 25

macula adherens

Answer 25

desmosomes: hold cells together

Question 26

where the myofilaments of the sarcomeres at the ends of myofibrils adhere to the sarcolemma. locate where myofilaments end at the muscle cell plasmamlemma

Answer 26

fascia (zonula) adherens

Question 27

connecting between muscle cells that allow transfer of ions between them

Answer 27

gap junctions

Question 28

smooth muscle cells are like fibroblasts in that they are able to synthesize

Answer 28

collagen, elastin and proteoglycans

Question 29

in smooth muscle, contraction is much ___ organized and occurs ______ ______ than it does in skeletal or cardiac

Answer 29

less organized

more slowly

Question 30

T/F: smooth muscles have a transverse tubule system

Answer 30

fasle

they don’t have one

Question 31

modified cardiac muscle cells mostly found in the ventricle that are specialized for conduction of electrical impulses.

Answer 31

pukinje fibers