Muscle Tissue

Question 1

voluntary muscle(s)

Answer 1

skeletal

Question 2

involuntary muscle(s)

Answer 2

cardiac and smooth

Question 3

resting tension in skeletal muscle

Answer 3

tone

Question 4

ability of muscles to be stimulated be nervous system

Answer 4

excitability

Question 5

ability of muscles to contract

Answer 5

contractility

Question 6

ability of muscles to relax/extend

Answer 6

extensibility

Question 7

ability of muscles to return to original shape

Answer 7

elasticity

Question 8

myo = ____

Answer 8

muscle

Question 9

sarco = ____

Answer 9

flesh (muscle cell)

Question 10

sarcomere = ____

Answer 10

muscle cell (repeating units)

Question 11

sarcolemma = ____

Answer 11

muscle cell membrane

Question 12

skeletal muscles consist of ____

Answer 12

muscle fascicles

Question 13

muscle fascicles consist of ____

Answer 13

muscle fibers

Question 14

muscle fibers consist of ____

Answer 14

myofibrils

Question 15

myofibrils consist of ____

Answer 15

sarcomeres

Question 16

sarcomeres consist of ____

Answer 16

myofilaments

Question 17

myofilaments consist of ____

Answer 17

actin and myosin

Question 18

two main myofilaments in skeletal muscle tissue

Answer 18

myosin and actin

Question 19

a muscle cell

Answer 19

sarcomere

Question 20

the cell membrane of a muscle cell

Answer 20

sarcolemma

Question 21

connective tissue surrounding whole muscle

Answer 21

epimysium

Question 22

connective tissue surrounding muscle fascicle(s)

Answer 22

perimysium

Question 23

connective tissue surrounding muscle fiber(s)

Answer 23

endomysium

Question 24

temporarily stores calcium to release into cells whenever needed

Answer 24

sarcoplasmic reticulum

Question 25

Electrical stimulation of a muscle cell triggers the release of calcium from the ____.

Answer 25

sarcoplasmic reticulum

Question 26

scaffolding throughout sarcomere allowing simultaneous stimulation

Answer 26

T-tubules

Question 27

chemical interaction between a neuron and a muscle fiber; nerve cell stimulating muscle cell

Answer 27

neurotransmitter junction (NMJ)

Question 28

neurotransmitter used for muscles

Answer 28

acetylcholine (ACh)

Question 29

The neurotransmitter ____ is released into the NMJ to stimulate a muscle cell.

Answer 29

ACh

Question 30

pouches in nerve containing neurotransmitter

Answer 30

synaptic vesicles

Question 31

binding site on opposite cell (on sarcolemma)

Answer 31

ACh receptor site

Question 32

microscopic space between cells; no actual contact between cells; space neurotransmitter empties into

Answer 32

synaptic cleft

Question 33

enzyme that breaks up acetylcholine causing relaxation

Answer 33

acetylchoinesterase

Question 34

The molecule ____ causes myosin to release from its actin-binding site.

Answer 34

ATP

Question 35

Lack of electrical stimulation causes muscle to ____.

Answer 35

atrophy

Question 36

Under what circumstance does myosin not release from its actin-binding site?

Answer 36

death

Question 37

a number of muscle fibers supplied by one neuron

Answer 37

motor unit

Question 38

easily fatigued skeletal muscle fibers

Answer 38

fast (white)

Question 39

not easily fatigued skeletal muscle fibers

Answer 39

slow (red - more myoglobin)

Question 40

The term for a short muscle is ____.

Answer 40

brevis

Question 41

The term biceps femoris indicates a muscle located on the ____.

Answer 41

thigh