Ch10

Question 0

A connective tissue partition that separates adjacent fasciculi in a skeletal muscle.

Answer 0

Perimysium

Question 1

A dense layer of collagen fibers that surrounds a skeletal muscle and is continuous with the tendons/aponeuroses of the muscle and with the perimysium.

Answer 1

Epimysium

Question 2

A small bundle; usually refers to a collection of nerve axons or muscle fibers.

Answer 2

Fascicle

Question 3

A delicate network of connective tissue fibers that surrounds individual muscle cells.

Answer 3

Endomysium

Question 4

Byronic stem cells that function in the repair of damaged muscle tissue

Answer 4

Myosatellite Cells

Question 5

A collagenous band that connects a skeletal muscle to an element of the skeleton.

Answer 5

Tendon

Question 6

A broad tendinous sheet that may serve as the origin or insertion of a skeletal muscle.

Answer 6

Aponeurosis

Question 7

The plasma membrane of a muscle cell.

Answer 7

Sarcolemma

Question 8

The cytoplasm of a muscle cell.

Answer 8

Sarcoplasm

Question 9

The transverse, tubular extensions of the sarcolemma that extend deep into the sarcoplasm, contacting cisternae of the sarcoplasmic reticulum.

Answer 9

Transverse tubules

Question 10

Organized collections of myofilaaments in skeletal and cardiac muscle cells.

Answer 10

myofibrils

Question 11

A cytoskeletal filament in a skeletal or cardiac muscle cell; consists of actin, troponin, and tropomyosin.

Answer 11

Thin filaments

Question 12

A cytoskeletal filament in a skeletal or cardiac muscle cell; composed of myosin with a core of titin.

Answer 12

Thick filament

Question 13

A myosin head that projects from the surface of a thick filament and that can bind to an active site of a thin filament in the presence of calcium ions.

Answer 13

Cross bridge

Question 14

A synapse between a neuron and a muscle cell.

Answer 14

Neuromuscular junction

Question 15

A single stimulus contraction relaxation cycle in a skeletal muscle.

Answer 15

Twitch

Question 16

If tension rises in stages like the steps in a staircase; if a skeletal muscle is stimulated a second time immediately after the relaxation phase has ended, the resulting contraction will develop a slightly higer maximum tension.

Answer 16

Treppe

Question 17

Occurs when higher stimulant frequency eliminates the relaxation phase

Answer 17

Complete tetanus

Question 18

the muscle as a whole does not change length and the tension produces never exceeds the load

Answer 18

isometric contractions

Question 19

tension rises and the skeleton muscles length changes

Answer 19

isotonic contraction

Question 20

The smallest contractile unit of a striated muscle cell.

Answer 20

Sarcomeres

Question 21

A propagated change in the transmembrane potential of excitable cells, initiated by a change in the membrane permeability to sodium ions.

Answer 21

Action Potential

Question 22

A narrow space, separates the synaptic terminal of the neuron from the opposing sarcolemmal surface.

Answer 22

Synaptic Cleft

Question 23

A chemical neurotransmitter in the brain and peripheral nervous system.

Answer 23

Acetylcholine

Question 24

A high-energy compound in muscle cells; during muscle activity, the phosphate group is donate to ADP, regenerating ATP.

Answer 24

Creatine Phosphate

Question 25

The complete breakdown of organic substrates into carbon dioxide and water, via pyruvic acid; a process that yields large amounts of ATP but requires mitochondria and oxygen.

Answer 25

Aerobic Metabolsim

Question 26

Without oxygen; The anaerobic cytoplasmic breakdown of glucose into lactic acid by way of pyruvic acid, with a net gain of two ATP molecules.

Answer 26

Anaerobic Process/Glycolysis

Question 27

A compound produced from pyruvic acid under anaerobic conditions.

Answer 27

Lactic Acid

Question 28

The conditions in muscle fibers are returned to normal, preexertion levels.

Answer 28

Recovery Period

Question 29

The amount of oxygen required to restore normal, preexertion conditions.

Answer 29

Oxygen Debt

Question 30

Also called cardiocytes or cardiac myocytes, are found only in the heart.

Answer 30

Cardiac Muscle Cells

Question 31

Regions where adjacent cardiocytes interlock and where gap junctions permit electrical coupling between the cells.

Answer 31

Intercalated discs

Question 32

Muscle tissue in the walls of manny visceral organs; characterized as nonstriated, involuntary muscle.

Answer 32

Smooth Muscle tissue

Question 33

Muscle tissue within the heart. contracts without neural stimulation.

Answer 33

Cardiac Muscle Tissue