Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Meat Science > Ch.2 > Flashcards

Ch.2 Flashcards

1
Q

3 components of carcass

A

Muscle
Bone
Fat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Skeletal muscle is how much of carcass weight

A

35-65%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What kind of muscle has a striated banding pattern

A

Skeletal muscle

Transverse banding pattern

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Blood vessels and intestines

Involuntary

A

Smooth muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Striated

Involuntary

A

Cardiac muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What muscle is attached directly or indirectly to bones by ligaments, fascia, cartilage, skin

A

Skeletal muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Skeletal muscle specialized for:

A

Shapes, sizes, and characteristics based on functions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Connective tissue sheath

A

Epimysium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Extends into the interior of the muscle

A

Perimysium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Nerve fibers and blood vessels enter and exit muscle through what connective tissues

A

Epimysium and perimysium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Muscle fiber=myofiber=muscle cell

A

Make up 79-92% total muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Remaking muscle volume

A

Connective tissue
Blood vessels
Nerve fibers
Extra cellular fluid (outside muscle)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Mammalian and again muscle fibers

A 
Long
Threadlike 
Multinucleated 
Unbranched
Taper on each end
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Cell membrane surrounding a muscle fiber

A

Sarcolemma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Sarcolema is composed of

A

Protein and lipid
Bilayer phospholipid cell membrane
Cholesterol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Elastic and can endure great distortion during contraction, relaxation, and stretching

A

Sarcolema

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Invaginations of the sarcolemma

A

Transverse tubules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Myoneural junction

A

Termination of motor nerve fiber endings on sarcolemma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Motor end plate

A

Small raised mound on the muscle formed by structures on the myoneural junction junction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Special to muscles
Cytoplasm of muscle cells
Contains organelles and inclusions
Made mostly of water

A

Sarcoplasm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Multinucleated
# of nuclei related to fiber length
Nuclei higher in the vicinity of motor end plate and tendinous attachment

A

Skeletal muscle fibers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Mammalian myofibers

A

Nuclei beneath sarcolemma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Ellipsodial shape and long axis parallel to fiber

A

Nuclei

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q 
Organelle unique to muscle tissue 
Long thin rods
Long axis parallel to muscle fiber
Extend length of muscle 
Bathed in sarcoplasm
A

Myofibril

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Two filaments in myofibrils

A

Thick and thin myofilaments

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Thick myofilament

A

Myosin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Thin myofilaments

A

F-actin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Thick filament surrounded by how many thin filaments

A

6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Singly refractive when viewed with polarized light

Isotropic

A

I-band

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Double refractive
Anisotropic
Dense

A

A-band

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Isotropic
Thin filament
Actin only

A

I band

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

Anisotropic
Thick filaments
Myosin and actin

A

A band

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

Proteins holding the myofilaments in 3 dimensional array

Actin filament

A

Z disk

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

Extends from z line to z line

Contracting unit

A

Sarcomere

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

Myofibril within 2 z disks
Repeating structural unit
Contractile unit

A

Sarcomere

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

H band contains

A

Myosin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

Myosin

Constitute a band of sarcomere

A

Thick filament

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

Constitute I band of sarcomere
Actin filaments
Extend into a band

A

Thin filaments

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

Actin filaments connect to how many z filaments

A

4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

How many proteins associated with myofibril

A

20

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

6 proteins of total myofibrillar protein

A 
Myosin
Actin
Titin
Tropomyosin
Troponin
Nebulin
42
Q

Actin and myosin

A

Contractile

43
Q

Tropomyosin and troponin

A

Regulatory

Regulate actin and myosin

44
Q

Titin and nebulin

A

Cytoskeketal

45
Q

20% myofibrillar proteins

46
Q

Globular (spherical)

Monomeric form actin

47
Q

Fibrous actin

Pearl necklace

48
Q

Long fibrous protein
45% myofibrillar protein
Elongated rod shape

49
Q

Myosin heads functionally active surges of thick filaments form

A

Cross bridges with actin filaments

50
Q

Myosin heads attach to g-actin molecules

A

Muscle contraction

51
Q

5% myofibrillar protein
In the groove
Close contact with actin

A

Tropomyosin

52
Q

5% myofibrillar protein
Troponin complex
Three blocking proteins

53
Q

Most active protein

54
Q

Largest protein
Most abundant
Binds to the outside shaft of thick filaments and protein (c protein)

55
Q

May anchor actin to z disk

Extends longitudinally along entire thin filament

56
Q

7 bands encircle thick filament on both sides of H zone

57
Q

Endoplasmic reticulum equivalent of other cells

Membranous system of rubles and cisternae

A

Sarcoplasmic reticulum

58
Q

Relatively thin tubules
Form a fenestrated collar
Form terminal cisternae
Longitudinal tubules extend both directions

A

Sarcoplasmic reticulum

59
Q

Run transversely across sarcomere
A-I band junction
Encircles myofibril

60
Q

Oblong organelles located in sarcoplasm
Powerhouse of cell
Capture energy

A

Mitochondria

61
Q

Small vesicles in sarcoplasm
Contain enzymes
Cathepsins

62
Q

Near nuclei

Located in sarcoplasm

A

Golgi complex

63
Q

Walls of arteries and lymph vessels
Reproductive tract
Communication

A

Smooth muscle

64
Q

Rhythmic contractile
Centrally located nucleus
Contains glycogen granules
Mitochondria are large and numerous

A

Cardiac muscle

65
Q

SR less developed

Not organized

A

Cardiac muscle

66
Q

Transect the fiber
Provides link among fibers of myocardium
Facilitate contractile force

A

Intercalated disks

67
Q

Molecular, biochemical,morphological events occur during muscle fibers
Hormone control

A

Myogenesis

68
Q

Muscle precursor cells

69
Q

Myoblasts fuse and donate nuclei to single immature muscle fiber

70
Q

Contributes least out of tissue types
Forms lining covers the surface of the body and organs
Classified by cell shape and number

A

Epithelial tissues

71
Q

Protection, secretion, excretion, transport, absorption, sense perception

A

Epithelial tissues

72
Q

central nervous system

A

Central consists of brain and spinal cord

73
Q

Peripheral

A

Nerve fibers in other parts of the body

74
Q

BSE

A

Bovine spongiform encephalopathy

75
Q

Bulk of nervous tissue

Consists of polyhedral shaped cells and long cylindrical structure called axon

76
Q

Encased within neuron

A

Neuroplasm (cytoplasm)

77
Q

Branched structures that radiate from a centrally placed nucleus within neuroplasm

78
Q

Groups of neuronal axons

A

Nerve fibers

79
Q

Groups of fibers

A

Nerve trunks

80
Q

Nerve impulse

A

Depolarization of cell membrane

81
Q

Formed when an axon ending of one cell interdigItatesnwith dendrite of another cell

82
Q

Large fibers enveloped in myelin sheaths

Small fibers devoid myelin sheath

A

Schwan cells

83
Q

Serves as barrier against infective agents and important in wound healing

A

Connective tissue

84
Q

Specialized connective tissue of fat storage cells

A

Adipose tissue

85
Q

Structureless mass called ground substance plus embedded cell dabs extra cellular fibers

A

Collagen and elastin

86
Q

Most abundant tissue in body

A

Connective tissue

87
Q

Protein attached to a sugar

A

Glycoproteins

88
Q

Large molecules composed of core protein with attached glucosaminoglycans

A

Proteoglycans

89
Q

Collagen

A

Tropocollagen

90
Q

Elastin

A

Tropoelastin

91
Q

Hyaluronic acid and chondrotin sulfates

A

Lubricate intercellular cementing substances and structural matter

92
Q

Dense irregular connective tissue

A

Fibers are densely interwoven but in random arrangement

93
Q

Dense regular connective tissue

A

Fibers arranged in bundles parallel to each other

94
Q

Most abundant protein in body

95
Q

Most abundant amino acid in collagen and compose 33% of amino acid

96
Q

Another 33% of amino acids

A

Hydroxyproline and proline

97
Q

Structural unit of collagen fibril

A

Tropocollagen

98
Q

Less abundant connective tissue protein

99
Q

Rubbery protein

100
Q

Large cable like strand of elastin fibers

A

Cervical ligament

Ligamentum nuchae

101
Q

HRI

A

Hotels, restaurants, institutions

Meat Science (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions