GIT Smooth Muscle Fibers at Batterjee Medical College | Flashcards & Summaries

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Lernmaterialien für GIT Smooth muscle fibers an der Batterjee Medical College

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TESTE DEIN WISSEN
Mechanism of smooth muscles contraction is similar to that of skeletal muscles


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TESTE DEIN WISSEN
 They contain parallel filaments of  actin  and  myosin  which  slide  over  each  other  during contraction.

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TESTE DEIN WISSEN
Smooth muscle fibers are


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TESTE DEIN WISSEN
spindle-shaped , non-striated
cells
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TESTE DEIN WISSEN
Source of calcium ions in the smooth muscles
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TESTE DEIN WISSEN
Extracellular fluid
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TESTE DEIN WISSEN
Smooth muscle fibers
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TESTE DEIN WISSEN
do not move the body, but they regulate most
of internal activities of the body


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TESTE DEIN WISSEN
Multiunit smooth muscle:

*Made up of ________ fibers.
* With OR without bridge?
*all or non law Obeys OR Does not obey?
*Under control of __________.
Ex:______and______.
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TESTE DEIN WISSEN
Multiunit smooth muscle:
*Made up of discrete (separate) fibers.
*without interconnecting bridges in between
(each fiber can contract independent to others)
*Does not obey all or non law.
*Under control of autonomic nervous system.
Ex: ciliary (eye) and erector pilae (skin).
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TESTE DEIN WISSEN
Single unit (visceral) smooth muscle:
*Made up of ________ fibers.
*With OR without bridge?
*all or non law Obeys OR Does not obey?
*Under control of __________.
Ex:______and______.
Lösung anzeigen
TESTE DEIN WISSEN
*Made up of large sheets of fibers.
*Have a functional syncytium
( low resistance bridges in between ).
*obey all or non law.
*Under control of Chemical (hormones).
Ex: walls of hollow viscera (the intestine, uterus and ureter..,) and many blood vessels.

Lösung ausblenden
TESTE DEIN WISSEN
*Made up of large sheets of  fibers.
*Have a functional syncytium 
( low resistance bridges in between ).
*obey all or non law.
*Under control of Chemical (hormones).
Lösung anzeigen
TESTE DEIN WISSEN
ciliary muscle, erector pilae (Multiunit)



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TESTE DEIN WISSEN
What Is the importance of tropomyosin?
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TESTE DEIN WISSEN
To cover the myosin binding site (actin active site) during rest
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TESTE DEIN WISSEN
calcium binding protein in skeletal muscle
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TESTE DEIN WISSEN
Troponin
Lösung ausblenden
TESTE DEIN WISSEN
In the skeletal muscle contraction the source of calcium ion ?
Lösung anzeigen
TESTE DEIN WISSEN
ECF (extracellular fluid)
Lösung ausblenden
TESTE DEIN WISSEN
Activation of Myosin Kinase
Lösung anzeigen
TESTE DEIN WISSEN
Transform ATP —-> ADP + phosphate
With releasing energy
which allow the myosin head to be tilting —-> sliding actin —-> contraction 
Lösung ausblenden
TESTE DEIN WISSEN
*Made up of discrete (separate) fibers.
*Each fiber can contract independent to others
( no interconnecting bridges in between).
*Does not obey all or non law.
*Under control of autonomic nervous system.


Lösung anzeigen
TESTE DEIN WISSEN
ciliary muscle, erector pilae (Multiunit)
Lösung ausblenden
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Q:
Mechanism of smooth muscles contraction is similar to that of skeletal muscles


A:
 They contain parallel filaments of  actin  and  myosin  which  slide  over  each  other  during contraction.

Q:
Smooth muscle fibers are


A:
spindle-shaped , non-striated
cells
Q:
Source of calcium ions in the smooth muscles
A:
Extracellular fluid
Q:
Smooth muscle fibers
A:
do not move the body, but they regulate most
of internal activities of the body


Q:
Multiunit smooth muscle:

*Made up of ________ fibers.
* With OR without bridge?
*all or non law Obeys OR Does not obey?
*Under control of __________.
Ex:______and______.
A:
Multiunit smooth muscle:
*Made up of discrete (separate) fibers.
*without interconnecting bridges in between
(each fiber can contract independent to others)
*Does not obey all or non law.
*Under control of autonomic nervous system.
Ex: ciliary (eye) and erector pilae (skin).
Mehr Karteikarten anzeigen
Q:
Single unit (visceral) smooth muscle:
*Made up of ________ fibers.
*With OR without bridge?
*all or non law Obeys OR Does not obey?
*Under control of __________.
Ex:______and______.
A:
*Made up of large sheets of fibers.
*Have a functional syncytium
( low resistance bridges in between ).
*obey all or non law.
*Under control of Chemical (hormones).
Ex: walls of hollow viscera (the intestine, uterus and ureter..,) and many blood vessels.

Q:
*Made up of large sheets of  fibers.
*Have a functional syncytium 
( low resistance bridges in between ).
*obey all or non law.
*Under control of Chemical (hormones).
A:
ciliary muscle, erector pilae (Multiunit)



Q:
What Is the importance of tropomyosin?
A:
To cover the myosin binding site (actin active site) during rest
Q:
calcium binding protein in skeletal muscle
A:
Troponin
Q:
In the skeletal muscle contraction the source of calcium ion ?
A:
ECF (extracellular fluid)
Q:
Activation of Myosin Kinase
A:
Transform ATP —-> ADP + phosphate
With releasing energy
which allow the myosin head to be tilting —-> sliding actin —-> contraction 
Q:
*Made up of discrete (separate) fibers.
*Each fiber can contract independent to others
( no interconnecting bridges in between).
*Does not obey all or non law.
*Under control of autonomic nervous system.


A:
ciliary muscle, erector pilae (Multiunit)
GIT Smooth muscle fibers

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