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Muscle Flashcards

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1
Q

WHAT ARE THE ORGANIZATION OF SKELETAL MUSCLE?

A
  1. Epimysium
  2. Perimysium
  3. Endomyium
  4. Tendon
  5. Myofibrils
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2
Q

OUTMOST OF THE SKELETAL MUSCLE?

A

EPIMYSIUM

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3
Q

INNERMOST OF THE SKELETAL MUSCLE?

A

ENDOMYSIUM

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4
Q

CONNECTIVE TISSUE COVERING THE SKELETAL MUSCLE?

A

EPIMYSIUM

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5
Q

CONNECTIVE TISSUE COVERING THE MUSCLE BUNDLE/FISCICLE

A

PERIMYSIUM

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6
Q

CONNECTIVE TISSUE COVERING THE MUSCLE FIBER?

A

ENDOMYSIUM

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7
Q

COMBINATION OF THE ALL CONNECTIVE TISSUES AT THE END?

A

TENDON

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8
Q

WHAT THE PRESENT OIN MYOFIBRILS?

A

SARCOMERE AND MYOFILAMENTS

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9
Q

PORTION BETWEEN 2 Z DISCS?

A

SARCOMERE

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10
Q

FUNCTIONAL CONTRACTILE UNIT OF THE MUSCLE

A

SARCOMERE

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11
Q

WHAT ARE THE PARTS OF SARCOMERE?

A

A. ACTIN
B. MYOSIN
C. I BAND
D. A BAND
E. M-LINE
F. H ZONE

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12
Q

ATTACHED TO THE Z DISC?

A

ACTIN

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13
Q

THICK BAND LOCATED IN THE MIDDLE?

A

MYOSIN

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14
Q

PART OF THE ACTIN?

A

I BAND

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15
Q

DOES NOT OVERLAP WITH MYOSIN?

A

I BAND

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16
Q

PORTION OF THE MYOSIN?

A

A BAND

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17
Q

IT OVERLAPS IN ACTIN?

A

A BAND

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18
Q

IMAGINARY LINE?

A

M-LINE

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19
Q

PARASAGITTAL LINES?

A

H ZONE

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20
Q

WHAT HAPPENED TO THE H ZONE DURING MUSCLE CONTRACTION?

A

DISAPPEARS

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21
Q

WHAT HAPPENED TO THE I BAND DURING MUSCLE CONTRACTION?

A

NARROWS

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22
Q

WHAT HAPPENED TO THE A BAND DURING MUSCLE CONTRACTION?

A

NOTHING HAPPENS

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23
Q

AKA T SYSTEM?

A

SARCOTUBULAR SYSTEM

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24
Q

AKA TRIAD?

A

SARCOTUBULAR SYSTEM

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25
WHAT ARE THE OTHER NAME OF SARCOTUBULAR SYSTEM?
T SYSTEM/TRIAD
26
WHAT ARE THE COMPONENTS OF THE SARCOTUBULAR SYSTEM/ T SYSTEM/TRIAD?
1. 1 TRANSVERSE TUBULE 2. 2 SARCOPLASMIC RETICULUM
27
CONVEYS AP INSIDE THE MUSCLE FROM THE NEUROMUSCULAR JUNCTION?
1 TRANSVERSE TUBULE
28
STORES CALCIUM WITHOUT AP?
2 SARCOPLASMIC RETICULUM
29
RELEASES CALCIUM WITH AP?
2 SARCOPLASMIC RETICULUM
30
2 TYPES OF MYOFILAMENTS?
1. THIN FILAMENTS 2. THICK FILAMENTS
31
3 PROTEIN STRUCTURES?
A. ACTIN B. TROPOMYOSIN C. TROPONIN
32
MADE UP FOR DOUBLE STRANDED F ACTIN PROTEIN MOLECULES?
ACTIN
33
SPIRAL OVER THE ACTIN THAT COVERS THE ACTIN BINDING SITES TO PREVENT MUSCLE CONTRACTION?
TROPOMYOSIN
34
PROTEIN THAT HAS 3 SUBUNITS?
TROPONIN
35
WHAT ARE THE 3 SUBUNITS OF TROPONIN?
i. TROPONIN I ii. TROPONIN C iii. TROPONIN T
36
A COMPLEX SO THAT THE TROPONIN AND TROPOMYOSIN WILL NOT BE SEPARATED?
TROPONIN-TROPOMYOSIN
37
IT ALSO COVERS THE ACTIN BINDING SITE?
i. TROPONIN I
38
IT FORMS A COMPLEX CALLED TROPONIN-TROPOMYOSIN?
iii. TROPONIN T
39
HAS HIGH AFFINITY WITH CALCIUM?
ii. TROPONIN C
40
MYOFILAMENTS HAS MYOSIN?
THICK FILAMENTS
41
MYOFILAMENTS HAS 3 PROTEIN STRUCTURES?
THIN FILAMENTS
42
ONLY ONE HEAD MUST HAVE AN ATTACHMENT AT A TIME?
THICK FILAMENTS
43
ATP+MYOSIN HEAD?
RELAXATION
44
ACTIN+MYOSIN HEAD?
MUSCLE CONTRACTION?
45
MAJOR NEUROTRANSMITTER OF THE NEROMUSCULAR JUCTION?
ACETYLCHOLINE (Ach)
46
ACETYLCHOLINE RECEPTORS FOUND IN SKELETAL MUSCLE?
NICOTINIC RECEPTORS
47
ACETYLCHOLINE RECEPTORS FOUND IN SMOOTH MUSCLE?
MUSCARINIC RECEPTORS
48
WHERE APs ARRIVE?
PRESYNAPTIC TERMINAL
49
IN SEQUENCE OF MUSCLE CONTRACTION, THE OPENING CALLED?
VOLTAGE-GATED CALCIUM CHANNELS
50
CALCIUM INFLEX TRIGGERS THE RELEASE OF ACETYLCHOLINE INTO THE?
SYNAPTIC CLEFT
51
ACETYLCHOLINE BINDS WITH ACETYLCHOLINE RECEPTORS WHICH PROMOTES OPENING OF?
LIGAND-GATED SODIUM CHANNELS AND SODIUM INFLUX
52
APs WILL CONVEYED BY?
TRANSVERSE TUBULES
53
CONVEYED BY T-TUBULES INSIDE THE MUSCLE AND DELIVER THEM TOWARDS THE?
SARCOPLASMIC RETICULUM
54
SARCOPLASMIC RETICULUM RELEASES?
CALCIUM
55
CALCIUM PRESENT IN THE?
SARCOMERE
56
CALCIUM BINDS WITH?
TROPONIN C
57
IT LEADS TO EXPOSURE OF ACTIN BINDING SITES AND PROMOTES ATTRACTION OF?
MYOSIN HEADS
58
MYOSIN HEAD BINDS WITH ____________ AND RELEASES ITS ATP?
ACTIN BINDING SITE
59
MYOSIN HEAD TILTS ITS HEAD TO PULL THE ACTIN INWARD?
POWER STROKE (MUSCLE CONTRACTION?
60
ATTACHMENT OF NEW ATP TO THE MYOSIN HEAD?
MUSCLE RELAXATION
61
FACTORS THAT TERMINATE MUSCLE CONTRACTION?
1. DECREASED LEVELS OF INTRACELLULAR CALCIUM IONS. 2. REMOVAL OF ACETYLCHOLINE BY ACETYLCHOLINEESTERASE 3. ATTACHMENT OF ATP TO THE MYOSIN HEAD
62
AT WHAT LENGTH CAN BE MUSCLE GENERATE THE HIGHEST TENSION?
RESTING LENGTH
63
ACTIN AND MYOSIN ARE TOO CLOSE TO THE POINT THERE TO STICK TOGETHER RIGHT AWAY?
LOW TENSION IF FULLY SHORTENED
64
ACTIN THE MYOSIN ARE TOO FAR APART TO THE POINT THAT IF THERE IS MUSCLE CONTRACTION, IT IS HARD FOR THEM TO STICK TOGETHER RIGHT AWAY?
LOW TENSION IF FULLY LENGTHENED
65
ENOUGH SPACE FOR CONTRACTION?
RESTING LENGTH
66
AT WHAT VELOCITY CAN MUSCLE GENERATE THAT HIGHEST TENSION?
FAST ECCENTRIC
67
FROM HIGHEST TO LOWEST TENSION?
FAST ECCENTRIC>SLOW ECCENTRIC>ISOMETRIC>SLOW CONCENTRIC> FAST CONCENTRIC
68
FAST ECCENTRIC?
LENGTHEN
69
ISOMETRIC
SAME LENGHT
70
SLOW CONCENTRIC?
SHORTEN

Physiology (2 decks)

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