Muscles

Question 1

Attached to bones

Answer 1

Skeletal muscle

Question 2

Striated and voluntary

Answer 2

Skeletal muscle

Question 3

Located in the heart

Answer 3

Cardiac muscle

Question 4

Striated and involuntary

Answer 4

Cardiac muscle

Question 5

Located in the blood vessels, and hollow organs

Answer 5

Smooth muscle

Question 6

Involuntary and non-striated

Answer 6

Smooth muscle

Question 7

Responsible locomotion, facial
expressions, posture,respiratory movements, other types of body movement

Answer 7

Skeletal muscle

Question 8

The skeletal muscle is controlled by which system?

Answer 8

Nervous system

Question 9

The smooth muscle is controlled by which system?

Answer 9

Endocrine system and autonomic nervous system

Question 10

The smooth muscle is controlled by which system?

Answer 10

Endocrine system and autonomic nervous system

Question 11

Propels urine, mix food in digestive tract

Answer 11

Smooth muscle

Question 12

What muscles are autorhythmic?

Answer 12

Cardiac and Smooth muscles

Question 13

What are the general properties of muscle tissue?

Answer 13

Contractibility, Excitability, Extensibility, Elasticity

Question 14

Ability of the muscle to recoil to its original resting length after it has been stretched

Answer 14

Elasticity

Question 15

The ability to be strecthed beyond its normal resting length and still able to contract

Answer 15

Extensibility

Question 16

Capacity of muscle to respond to a stimulis

Answer 16

Excitability

Question 17

For skeletal muscles, the stimulis to contract is from ____?

Answer 17

nerves

Question 17

Ability of muscle to shorten forcefully or contract

Answer 17

Contractibility

Question 18

Muscle shortening is ___ while muscle lengthening is ____

Answer 18

Forceful; Passive

Question 19

When the skeletal muscles contract it causes ____ ?

Answer 19

movement

Question 20

When the smooth muscle and cardiac muscle contracts there is an ______

Answer 20

increase of pressure inside the organ it surrounds

Question 21

Skeletal muscles contribute to body weight by how many percent?

Answer 21

40%

Question 22

Another name for skeletal muscle

Answer 22

Striated muscle

Question 23

Give me the structure of muscle in order

Answer 23

1. Epimysium
   2.Muscle fasicles
   3.Perimysium
   4.Fasicle
2. Muscle fibers
3. Endomysium
4. myofibrils
   8.myofilaments
5. sarcollema
6. sarcoplasm

Question 24

Myofilaments are composed of 2 major protein fibers

Answer 24

actin and myosin

Question 25

Whole muscle is surrounded by a connective tissue sheath called?

Answer 25

Epimysium

Question 26

Each muscle is composed of _____, each of which is surrounded by a connective tissue layer

Answer 26

muscle fascicles and perimysium

Question 27

The fascicles are composed of

Answer 27

Muscle fibers/ muscle cells

Question 28

Each muscle fiber is surrounded by a connective tissue layer called

Answer 28

endomysium

Question 29

Muscle fibers contain groups of protein fibers called

Answer 29

myofibrils

Question 30

Myofibrils are composed of protein filaments

Answer 30

myofilaments

Question 31

Muscle fiber consists of a plasma membrane ____, cytoplasm ____, ____ and ____

Answer 31

Sarcolemma, sarcoplasm, nuclei and myofibrils

Question 32

The sarcoplasmic reticulum has enlarged sacs called

Answer 32

terminal cisternae

Question 33

Two terminal cisternae lie on either side of inward extensions of the sarcolemma called

Answer 33

Transverse tubules/ T tubules

Question 34

The two terminal cisternae plus the T tubule which forms a ?

Answer 34

Triad

Question 35

T OR F: Does the number of muscle fibers remain constant after birth?

Answer 35

True, it remains constant after birth so the enlargement of muscles result from an icnrease in the size of muscle fibers

Question 36

What are the general muscle property of contractility?

Answer 36

Myofibrils and myofilaments

Question 37

Thin filaments

Answer 37

Actin filaments

Question 38

Thick filaments

Answer 38

Myosin

Question 39

Structural and functional units of skeletal muscles

Answer 39

Sarcomeres

Question 40

Join end to end to create myofibrils

Answer 40

Sarcomeres

Question 41

Mainly composed of actin myofilaments and myosin myofilaments

Answer 41

Sarcomeres

Question 42

It anchors the actin myofilaments

Answer 42

Z disks

Question 43

It holds the myosin myofilaments in place

Answer 43

M place

Question 44

Each sarcomere consists of bands, what are they?

Answer 44

Light staining bond/ l-bond and dark-staining bond/A-bond

Question 45

What are the three componets that make up the actin myofilaments

Answer 45

Globular actin, troponin, tropomyosin

Question 46

It has an active site for myosin binding durign muscle contraction

Answer 46

Globular actin

Question 47

Long, fibrous protein that lies in the groove along the fibrous actin strand

Answer 47

Tropomyosin

Question 48

T or F: A muscle can contract until the tropomysoin moves to uncover the active site

Answer 48

False, the muscle cannot contract until...

Question 48

Subunit that prevents the tropomyosin from uncovering the G actin sites in relaxed muscles

Answer 48

Troponin

Question 48

It blocks the myosin binding sites on the actin filaments

Answer 48

Tropomyosin

Question 49

It has binding sites for Ca+

Answer 49

Troponin

Question 50

Resembles tiny golf clubs

Answer 50

Myosin

Question 51

Myosin heads have?

Answer 51

an ATP binding site, ATPase enzymes, attachment spots for actin

Question 52

What happens during the resting membrane potential?

Answer 52

Na+ closes, while the K+ some are open

Question 53

What happens during the depolarizaton

Answer 53

Na+ opens, while the K+ some are open

Question 54

What happens during repolarization

Answer 54

Na+ some are closed, K+ opens

Question 55

Point of contact of moton neuron axon that branches with the muscle fiber

Answer 55

Neuromuscular Junction

Question 56

A muscle that stimulates each other to contract

Answer 56

Smooth muscle

Question 57

A muscle that stimulates each other to contract is a process called?

Answer 57

Peristalsis

Question 58

Connects muscles to other muscles

Answer 58

Aponeurosis

Question 59

A neurotransmitter in synaptic vesicles

Answer 59

Acetylcholine

Question 60

An axon terminal

Answer 60

Presynaptic terminal

Question 61

Space between presynaptic terminal and the muscle fiber

Answer 61

Synaptic cleft

Question 62

Muscle plasma membrane in the area of the junction

Answer 62

Postsynaptic membrane

Question 63

Numerous mitochondria and many small spherical sacs

Answer 63

Synaptic vesicles

Question 64

What is the primary function of skeltal muscle fibers?

Answer 64

Generate force by contracting or shortening

Question 65

What are the 3 types of muscle contraction?

Answer 65

Isometric, isotonic, eccentric contractions

Question 66

There is a muscle tension and causes the muscle to lengthen

Answer 66

Eccentric contraction

Question 67

Increase in muscle tension and decrease in length of muscle

Answer 67

Isotonic contraction

Question 68

Increase in muscle tension but no change in length of muscle

Answer 68

Isometric contraction

Question 69

The heads of the myosin bind to the exposed attachment sites of actin to form a?

Answer 69

Cross bridge movement

Question 70

Cross bridge movement is for?

Answer 70

Muscle shortening