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Veterinary Terminology > Muscular System > Flashcards

Muscular System Flashcards

1
Q

3 Kinds Of Muscle Tissue

A

Skeletal - Striated
Cardiac - Striated
Smooth

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2
Q

4 Properties Of Muscle Tissue

A

Contractility
Excitability
Extensibility
Elasticity

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3
Q

Skeletal Muscles That Do Not Move The Skeleton

A

External Sphincter Of The Bladder

Diaphragm

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4
Q

Satellite Cells

A

Lie Between Endomysium & Muscle Fibers

Function In Repair Of Damaged Muscle Tissue

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5
Q

Epimysium

A

Sheath of connective tissue surrounding the muscle

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6
Q

Fascicle

A

A small bundle or cluster of muscle fibers

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7
Q

Perimysium

A

Sheath of connective surrounding each fascicle

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8
Q

Sarcolemma

A

Plasma Membrane Of A Muscle Cell

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9
Q

Myofibril

A

Threadlike structure, running longitudinally through a muscle fiber consisting of thick filaments (myosin)
and thin filaments (actin, troponin and tropomyosin) (myofilaments) which are arranged in sarcomeres

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10
Q

Sarcomere

A

Basic contractile unit of striated muscle fibers

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11
Q

Intercalated Discs

A

Special areas of contact between adjacent cells which are characteristic of heart muscle

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12
Q

Gap Junctions

A

Couple myocardial cells together mechanically and electrically

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13
Q

Pacemaker

A

Specialized Group Of Cells Where Cardiac Action Potentials Originate

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14
Q

Transverse (T) Tubules

A

Small cylindrical invaginations of sarcolemma of striated muscle fiber that conduct muscle action potentials towards the center of the muscle fiber

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15
Q

Intercalated Disc

A

Cell-to-cell attachment with gap junctions that aid in the conduction of muscle action potentials and desmosomes that hold the cardiac muscle fibers together

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16
Q

Smooth Muscle Myofilaments

A

Myosin, Actin, & Tropomyosin

17
Q

Dense Bodies

A

Points Of Attachment For Actin Filaments In Smooth Muscle

18
Q

3 Ways To Initiate Action Potentials

A

Pacemaker Cells
Hormones
Neurotransmitters

19
Q

Multiunit Smooth Muscle Examples

A

Large Arteries, Bronchioles, Arrector Pili Muscles, And Radial & Circular Muscles Of Iris

Veterinary Terminology (6 decks)

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