NEET Biology Multiple Choice Questions – Muscular System

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NEET Biology Muscular System Multiple-Choice Questions

Question 1. Abductors Are Antagonists Of :

  1. Adductors
  2. Extensors
  3. Tlexois
  4. None Of These.

Answer: 1. Adductors

Question 2. The Non Striated Muscles are also referred to As The :

  1. Cardiac Muscle
  2. Voluntary Muscle
  3. Skeletal Muscle
  4. Involuntary Muscle.

Answer: 4. Involuntary Muscle.

Question 3. Fach Satvomcrc Consists Of Regularly Arranged Thick And Thin:

  1. Carbohydrate Filaments
  2. Fat Filaments
  3. Protein Filaments
  4. Vitamin Filaments.

Answer:  3. Protein Filaments

Question 4. The Dark Band Of The Protein Filament Is Called The :

  1. Anisotropic Band
  2. Isotonic Band
  3. Isometric Band
  4. Isotropic Band.

Answer: 1. Anisotropic Band

Read and Learn More NEET Biology Multiple Choice Question and Answers

Question 5. The Light Band Of The Protein Filament Is Called The :

  1. Isotaipic Band
  2. Isotonic Band
  3. Isometric Band
  4. Anisotropic Band.

Answer: 1. Isotaipic Band

Muscular System MCQs For NEET

Question 6. The Term ‘Refractory Period’ Concerning Muscle Tissue Refers To :

  1. A Period When Stimulation Does Not Lead To Contraction
  2. A Period When Maximal Contraction Occurs
  3. Time Gap Between Application Of Stimulus And Occurrence Of Contraction
  4. Loss Of Translucency In Muscle Fibres Due To Death Of Animal.

Answer: 1. A Period When Stimulation Does Not Lead To Contraction

Question 7. The Largest Muscle Of The Body Is :

  1. Biceps
  2. Gluteus Maximus
  3. Triceps
  4. Quadriceps.

Answer: 2. Gluteus Maximus

Question 8. Cori’s Cycle Operates In :

  1. Liver
  2. Liver And Muscles
  3. Nerve
  4. Muscles.

Answer: 2. Liver And Muscles

Question 9. The Muscle Used In Straightening A Limb Is Called :

  1. Elevator
  2. Flexor
  3. Extensor
  4. Depressor.

Answer: 3. Extensor

Question 10. Heart Beat Is Controlled By Specialized Muscles Whose Fibres Are Called :

  1. Purkinje Fibres
  2. Myonemes
  3. Telodendria
  4. Collagen Fibres.

Answer: 1. Purkinje Fibres

Muscular System MCQs For NEET

Question 11. Rigor Mortis Is Due To :

  1. Leakage Of Calcium Out Of The Sarcoplasmic Reticulum After Death
  2. Lack Of ATP
  3. Death Of The Motor Neuron
  4. Loss Of Electrical Potential Difference Across The Sarcolemma.

Answer: 2. Lack Of ATP

Question 12. The Extent Of Contraction Of A Mammalian Skeletal Muscle Is Controlled By :

  1. Interaction Of Excitatory And Inhibitory Nervous Input To Individual Fibres
  2. Contraction Of Some Sacromeres In A Muscle Fibre But Not Others
  3. Contraction Of Some Entire Muscle Fibres While Others Remain Relaxed
  4. All Of The Above.

Answer: 3. Contraction Of Some Entire Muscle Fibres While Others Remain Relaxed

Question 13. Krause’s Membrane Is:

  1. Z-Disc
  2. Sarcolemma
  3. T-System
  4. Neuromuscular Junction.

Answer: 1. Z-Disc

Question 14. Muscle Fatigue Is Due To Accumulation Of:

  1. Adp
  2. HCL
  3. 1actic Acid
  4. Creatine.

Answer: 3.  1actic Acid

Question 15. Which One Of The Following Proteins Is Both Structural And Enzymatic?

  1. Actin
  2. Troponin
  3. Myosin
  4. Trypsin.

Answer: 2. Troponin

NEET Biology Muscular System Questions

Question 16. Muscles Arc Derived From Embryonic :

  1. Endoderm
  2. Ectoderm
  3. Mesoderm
  4. All Of These.

Answer: 3. Mesoderm

Question 17. The Immediate Source Of Energy For Muscle Contraction Is:

  1. NADH2
  2. ATP
  3. Glucose
  4. Pyruvic Acid.

Answer: 2. ATP

Question 18. For Each Phase Below, Give The, Type (S) Of Muscle That Show The Characteristic :

A. Syncytial                                                           1. Cardiac

B. Innervated By Autonomic Nervous System      2. Skeletal

C. Can Contract Without Nervous Stimulation     3. Smooth

D. Typically Found In Sheets Rather In Bundles.

Select The Correct Combinations :

  1. A-2,  B-2,3,   C-1,   D-3
  2. A-2,  B-1,     C-3,    D-2
  3. A-2,  B-1,3   C-1,    D-3
  4. A-3,  B-1,     C-1,3   D-3.

Answer: 1. A-2,  B-2,3,  C-1,  D-3

Question 19. Striated Muscles Contract By :

  1. Sliding Of Actin Filament Upon Myosin Filaments
  2. Sliding Of Myosin Filaments Upon Actin Filaments
  3. Pulling Together Of Myosin’filaments
  4. Pulling Together Of Actin Filaments.

Answer: 1. Sliding Of Actin Filament Upon Myosin Filaments

Question 20. Heart Muscles Are Called :

  1. Skeletal
  2. Visceral
  3. Cardiac
  4. Smooth.

Answer: 3. Cardiac

NEET Biology Muscular System Questions

Question 21. A Striped Muscle Fibre Has:

  1. No Nucleus
  2. Many Nuclei
  3. Two Nuclei
  4. One Nucleus.

Answer: 2. Many Nuclei

Question 22. What Happens To The Muscle Due To Strenuous Exercise?

  1. Glucose Is Converted To Glycogen
  2. Fat Is Converted To Protein.
  3. Glucose Is Converted To Protein
  4. Pyruvic Acid Is Converted Intojuetic Acid.

Answer: 4. Pyruvic Acid Is Converted Intojuetic Acid.

Question 23. Strongest Muscles In Human Body Are Found In :

  1. Jaws
  2. Thighs
  3. Neck
  4. Hands.

Answer: 1. Jaws

Question 24. Cardiac Muscles Are Striped Muscles With Fibres Being :

  1. Syncytial And Voluntary
  2. Multinucleated And Involuntary
  3. Nucleated Aiul Voluntary
  4. Nucleated And Involuntary.

Answer: 1. Syncytial And Voluntary

Questions Question 25. Cardiac Muscles Contract :

  1. Slowly And Get Fatigued
  2. Quickly And Gel Fatigued
  3. Slowly And Do Not Get Fatigued
  4. Quickly And Do Not Gel Fatigue.

Answer: 4. Quickly And Do Not Gel Fatigued

NEET Biology Muscular System Questions

Question 26. The Muscles Which Bring About The Movements Of The Body Are :

  1. Smooth
  2. Striated
  3. Cardiac
  4. Smooth And Striated Both.

Answer: 2. Striated

Question 27. The Distance Or Length Of The Myofibril Between Two Adjacent Z-Bands Is Called :

  1. Sarcomere
  2. Sarcolemma
  3. Fibril
  4. Sarcoplasm.

Answer: 1. Sarcomere

Question 28. The Smallest Functional Unit Of Striated Muscles Is Called :

  1. Sarcomere
  2. Myosin
  3. Neurilemma
  4. ATP-Molecule.

Answer: 1. Sarcomere

Question 29. In A Relaxed Fibril, H-Zone—A Lighter Region Of Low Density Can Be Seen In The Centre Of:

  1. Anisotropic Or A-Band
  2. Isotropic Or I-Band
  3. Z-Band.
  4. Both In A And I-Bands.

Answer: 1.  Anisotropic Or A-Band

Question 30. The Myofilaments Which Make A Myofibril Are :

  1. Only Primary Or Thick
  2. Only Secondary Or Thin
  3. Both Primary And Secondary
  4. Medullated.

Answer: 3. Both Primary And Secondary

Question 31. The Number Of Secondary Filaments That Surround A Primary Filament In A Myofibril Is :

  1. 4
  2. 6
  3. 8
  4. 10.

Answer: 2. 6

Human Muscular System NEET MCQs

Question 32. The Dark Bands In A Myofibril Are Due To Overlapping Of:

  1. Only Thick Bands
  2. Only Thin Bands.
  3. Both Thick And Thin Bands
  4. None Of The Above.

Answer: 3. Both Thick And Thin Bands

Question 33. The Light Bands In A Myofibril Are Due To The Overlapping Of:

  1. Primary Bands
  2. Secondary Bands
  3. Both Primary And Secondary Bands
  4. None Of The Above.

Answer: 2. Secondary Bands

Question 34. The Special Contractile Protein Actin Is Found In :

  1. Thick Filaments Of A-Bands
  2. Thin Filaments Of I-Bands
  3. Both Thick And Thin Filaments
  4. Whole Of Myofibril.

Answer: 2. Thin Filaments Of I-Bands

Question 35. The Thick Filaments Of A-Bands Contain A Special Contractile Protein Called :

  1. Actin
  2. Myosin
  3. Ossein
  4. Both Actin And Myosin.

Answer: 2. Myosin

Muscle Locomotion and Movement Class Biology MCQ Question 36. The Cross-Bridges In A Myofibril Arise As The Heads Of Molecules Of:

  1. Lyosin
  2. Actin
  3. Tropomyosin
  4. Elastin.

Answer: 1. Lyosin

Question 37. The Lime Interval Between Two Subsequent Contractions Of A Muscle Fibre During Which A Muscle Fibre Does Not Respond To A Stimulus Is Called :

  1. Incubation Period
  2. Refractory Period
  3. Gestation Period
  4. Excitatory Period.

Answer: 2. Refractory Period

Human Muscular System NEET MCQs

Question 38. The Simple, Single Muscular Contraction Caused By A Single Short Stimulus Is Called :

  1. Tendon
  2. Twitch
  3. Refractory Period
  4. Tetanus.

Answer: 2. Twitch

Question 39. The Smooth Sustained Contraction Of A Muscle Due To the Fusion Of Many Twitches Is Called :

  1. Tendon
  2. Tetanus
  3. Muscular Fatigue
  4. Rigor Mortis.

Answer: 2. Tetanus

Question 40. The Contraction Of Muscles After Death Is Called :

  1. Rigor Mortis
  2. Tetanus
  3. Twitch
  4. Refraction.

Answer: 1. Rigor Mortis

Question 41. The Diminished Muscular Contraction Ability As A Result Of Prolonged Stimulation Is Called :

  1. Twitch
  2. Muscle Fatigue
  3. Tetanus
  4. Rigor Mortis.

Answer: 2. Muscle Fatigue

Question 42. The Muscular Contraction In Which The Tension Of The Muscle Increases Sharply, Length Of the Muscle Remains The Same And No Mechanical Work Is Done Is Called :

  1. Isotonic Contraction
  2. Tetanus
  3. Isometric Contraction
  4. Twitch.

Answer: 3. Isometric Contraction

NEET Previous Year Questions On Muscular System

Question 43. The Muscular Contraction In Which The Tension Remains The Same And The Mechanical Work Is Also Done Is Called :

  1. Isotonic Contraction
  2. Tetanus
  3. Isometric Contraction
  4. Single-Muscle Twitch.

Answer: 1. Isotonic Contraction

Question 44. The Muscular Fatigue Is Due To The :

  1. Lack Of ATP and Lactic Acid
  2. Lack Of Glycogen Atp And Lactic Acid
  3. Lack Of Lactic Acid And Glycogen
  4. Lack Of Glycogen, Atp And Excess Of Lactic Acid.

Answer: 4. Lack Of Glycogen, Atp And Excess Of Lactic Acid

Muscle Locomotion and Movement Class Biology MCQ Question 45. Polio Disease Is A Viral Disease Common In Children. It Affects :

  1. Skeleton
  2. Nervous System
  3. Muscles And Spinal Cord
  4. Skeleton And Nervous System.

Answer: 3. Muscles And Spinal Cord

Question 46. Which One Of The Following Acts As Phosphagen In The Vertebrates?

  1. Phosphocrcatinc
  2. Atp
  3. Phosphoric Acid
  4. Phosphoaigininc.

Answer: 1. Phosphocrcatinc

Question  47. The Total Weight Of Muscles In An Adult Male Is ;

  1. 10 Kg.
  2. 30 Kg
  3. 50 Kg.
  4. 70 Kg

Answer: 2. 30 Kg

NEET Previous Year Questions On Muscular System

Question 48. Minimum Strength Of Stimulus Required To Initiate Muscle Contraction Is :

  1. Twitch
  2. Threshold
  3. Tetany
  4. Rigor Mortis.

Answer: 2. Threshold

Question 49.  Biochemical Changes During Muscle Contraction Were Explained By :

  1. Huxley And Huxley
  2. Huxley. Huxley And Hansen
  3. Bohr
  4. Albert Szent-Gyorgi.

Answer: 4. Albert Szent-Gyorgi.

Question 50. Contraction Of Which Muscle Draws A Limb Towards Body Line?

  1. Abductor
  2. Hansen
  3. Adductor
  4. Triceps

Answer: 3. Adductor

Question 51. The Erect Posture Of A Man Against Gravity Is Constantly Maintained By :

  1. Back
  2. Biceps
  3. Red Muscles
  4. Triceps.

Answer: 3. Red Muscles

Question 52. The Fundamental, Repeating Unit Of Skeletal Myofibril Is The :

  1. Motor Unit
  2. Myosin Cross Bridge
  3. Sarcoplasmic Reticulum
  4. Sarcomeres

Answer: 4. Sarcomeres

Question 53. A Contraction Cycle (Muscle Twitch) Consists Of:

  1. A Latent Period
  2. A Contraction Period
  3. A Relaxation Period
  4. All The Above.

Answer: 4. All The Above.

NEET Previous Year Questions On Muscular System

Question 54. In Muscle Contraction, Sarcomeres Become Shorter. Which Of The Following Does Not Occur In This Process?

  1. Z Lines Come Closer
  2. A Bands Shorten
  3. I Bands Shorten
  4. H Zones Become Narrow.

Answer: 2. A Bands Shorten

MCQ on Muscular System Question 55. According To The Now Established Siiding Filamentmodel Of Muscle Contraction, The Molecules That Move To Shorteii A Muscle Are :

  1. Actin
  2. Myosin
  3. Collagen
  4. Creatine Phosphate

Answer: 1. Actin

Question 56. The Neurotransmitter Between A Motor Neuron And Muscle Cell Is :

  1. Serotonin
  2. Endorphin
  3. Dopamine
  4. Acetylcholine

Answer: 4. Acetylcholine

Question 57. During Muscle Contraction:

  1. Chemical Energy Is Changed Into Electrical Energy
  2. Chemical Energy Is Changed Into Mechanical Energy
  3. Chemical Energy Is Changed Into Physical Energy
  4. Mechanical Energy Is Changed Into Chemical

Answer: 2. Chemical Energy Is Changed Into Mechanical Energy

Question 58. The Ions That Help In Biochemical Events In Muscle Contraction Are :

  1. Na+ And K++
  2. Na+ And Ca++
  3. Ca++ And Mg4++
  4. Na+ And Mg++.

Answer:  3. Ca++ And Mg4++

NEET Previous Year Questions On Muscular System

Question 59. What  Is Not True Of The Primary  Or Thicker Myofilaments?

  1. Composed Of Myosin
  2. Confined To A Bunds
  3. Hem Cross Bridges
  4. Joined At Both Ends.

Answer: 4. Joined At Both Ends.

MCQ on Muscular System Question 60. The Ion That Must Lie Present For Binding Of Cross Bridges Is :

  1. Ca++
  2. Na+
  3. Fe++
  4. K+

Answer:  1. Ca++

Question 61. A Body Muscle Is Enclosed By A Sheath Called :

  1. Endomysium
  2. Perimysium
  3. Epimysium
  4. Fibroiis Capsule

Answer:  3. Epimysium

Question 62. When Muscle Remains In A Prolonged Contraction, It Is Called:

  1. Convulsion
  2. Muscle Twitch
  3. Tetanus
  4. Poliomyelitis.

Answer: 3. Tetanus

Question 63. Sliding Filament Theory Of’musclc Contraction Was Proposed By :

  1. Huxley
  2. Hansen
  3. Bohr
  4. Huxley, Huxley And Hansen

Answer: 4. Huxley, Huxley And Hansen

Question 64. Red Muscles Are Found On The Human

  1. Back
  2. Thorax
  3. Abdomen
  4. Head

Answer: 1. Back

NEET Chapter-wise MCQs On Muscles

Question 65. Fore Arm Is Brought Towards Upper Arm By

  1. Supinator Muscle
  2. Depress Or Muscles
  3. Biceps
  4. Triceps.

Answer: 3. Biceps

Question 66. The instrument Used To Record The Muscle Twitch Is :

  1. Myograph
  2. Kymograph
  3. Electrocardiograph
  4. Phonograph

Answer: 2. Kymograph

Question 67. Parapodia Are Locomotory Organs Of:

  1. Earthworm
  2. Lumbricus
  3. Leech
  4. Nereis

Answer: 4. Nereis

Question 68. Atlas-Axis Joint Is :

  1. Hinge Joint
  2. Pivot Joint
  3. Angular Joint
  4. Saddle Joint

Answer: 2. Pivot Joint

Question 69. Locomotion In Star Fish Occurs By :

  1. Tentacles
  2. Flagella
  3. Tube Feet
  4. Pseudopodia.

Answer: 3. Tube Feet

NEET Chapter-wise MCQs On Muscles

Question 70. Which Muscles Move The Fore’limb?

  1. Triceps Brachii
  2. Dorsal Scapularis
  3. Latis Sinus Dorsi
  4. Brachialis.

Answer: 4. Brachialis.

Question 71. In Birds Which Flight Muscle Is Well Developed?

  1. Alary
  2. Biceps
  3. Gastrocnemius
  4. Pectoralis Major.

Answer: 4. Pectoralis Major.

Question 72. Intercostal Muscles Are Found In :

  1. Fingers
  2. Thoracic Ribs
  3. Femur
  4. Radio-Ulna.

Answer: 2. Thoracic Ribs

Question 73. Skeletal Or Striped Muscles Art

  1. Multinucleated, Cylindrical
  2. Syncytial
  3. Having Large Number Of Sarcosomes
  4. All Of The Above.

Answer: 4. All Of The Above

Question 74. In Muscle Fibres The Endoplasmic Reticulum Is Known As:

  1. Sarcoplasmic Reticulum.
  2. Poorly Developed
  3. Irregular In Shape
  4. Seen Only During Protein Synthesis.

Answer: 1. Sarcoplasmic Reticulum

Question 75. Biceps Muscle Connects Humerus With :

  1. Radius
  2. Ulna
  3. Scapula
  4. Pectoral Girdle

Answer: 1. Radius

Question 76. Smooth Muscles Air Pirsent In The :

  1. Ciliary Body
  2. Dermis
  3. Iris
  4. All Of These

Answer: 4. All OF These

NEET Chapter-wise MCQs On Muscles

Question 77. The Functional Unit Of The Contiaetlle System In The Striped Muscle Is :

  1. 2-Hand
  2. A-Band
  3. Myofibrils
  4. Sarcomere.

Answer: 4. Sarcomere

Question 78. The Total Number Of Muscles In The Body Of Man Is:

  1. 409
  2. 439
  3. 539
  4. 639

Answer: 4. 639

Question 79. The Gastrocnemius Muscle Is Attached To :

  1. Fore Arm
  2. Chest
  3. Thigh
  4. Shank.

Answer: 4. Shank.

Question 80. Addition Of One Contraction To A Previous One To Produce More Shortening Is :

  1. Summation
  2. Tetany
  3. Fatigue
  4. Rigor-Mortis.

Answer: 1. Summation

Question 81. A Sustained Contraction Of Muscle Due To Fusion Of Many Twitches Following Each Other In Succession Is Termed :

  1. Tetany
  2. Summation
  3. Fatigue
  4. Rigor-Mortis.

Answer: 1. Tetany

Question 82. The Muscles Undergo Contraction After Death. This State Of “Dead-Rigor” Is Called :

  1. Rigor-Mortis
  2. Tetanus
  3. Summation
  4. Fatigue.

Answer: 1. Rigor-Mortis

Question 83. Cori Cycle Occurs In :

  1. Liver
  2. Muscles
  3. Kidney
  4. Both 1 And 2.

Answer: 4. Both 1 And 2.

Question 84. Cori Cycle Is Associated With :

  1. Pyruvic Acid
  2. Oxalic Acid
  3. Lactic Acid
  4. Acetic Acid.

Answer: 3. Lactic Acid

Question 85. Contractile Proteins Include :

  1. Troponin
  2. Tropomyosin
  3. Actin And Myosin
  4. All The Three.

Answer: 1. Troponin

Question 86. Ciliary Muscles Are Found In :

  1. Diaphragm Of A Mammal
  2. Eyes Of Vertebrates
  3. Heart Of Vertebrates
  4. Stomach Of Frog.

Answer: 2. Eyes Of Vertebrates

Question 87. Which Of The Following Structures takes part In Locomotion And As Well As Feeding?

  1. Cilia
  2. Tentacles
  3. Limbs
  4. All Of The Above.

Answer: 4. All Of Above.

Question 88. Amoeboid Movement Help In Food Capturing And Change Of Place. Which Of The Following Are Involved In Pseudopodial Locomotion?

  1. Microfilament
  2. Cytosol
  3. Plasma Membrane
  4. All Of The Above.

Answer: 1. Microfilament

Muscle Locomotion and Movement Class Biology MCQ Question 89. In Humans, Muscles Constitute About Percent Of Total Body Weight:

  1. 10 – 20
  2. 20 – 30
  3. 30 – 40
  4. 40 – 50.

Answer: 4. 40 – 50.

Question 90. Visceral Muscles Are Smooth And Involuntary Except:

  1. Gut Muscles
  2. Bronchial Muscles
  3. Heart Muscles
  4. Arterial Muscles.

Answer: 3. Heart Muscles

Question 91. Which Of The Following Is Not True?

  1. Troponin Is A Part Of Thick Filament.
  2. Head Of  Myosin Has ATPase Activity
  3. Actin Is Present In Thin Filament
  4. H-Zone Of Striated Muscle Fibre Represents Both Thick And Thin Filament

Answer: 4. H-Zone Of Striated Muscle Fibre Represents Both Thick And Thin Filament

Question 92. Match Column 1 With Column 2.

Muscular system Match The Column 1 And 2 Question 92

  1. A – 5, B – 1, C – 3, D – 4
  2. A – 4, B – 3, C – 2, D – 1
  3. A – 1, B – 2, C – 3, D – 4
  4. A – 5, B – 1, C – 2, D – 4.

Answer: 1. A – 5, B – 1, C – 3, D – 4

Muscular System MCQs For NEET

Question 93. Which Of The Following Is Not True?

  1. At The Centre Of A – Band, A Comparatively Less Dark Zone Called H – Zone Is Present
  2. In The Centre Of H – Zone, M – Line Is Present
  3. Z- Line Is Located At The Centre Of The I – Band
  4. The H – Zone Contains Only Thin Filaments.

Answer: 4. The H – Zone Contains Only Thin Filaments.

Question 94. Myosin Molecule Of Muscles Is Formed Of A Tail And Head. The Tail Is Formed Of:

  1. T- MM
  2. H-MM
  3. Both L – MM And H – MM
  4. IFs.

Answer: 2. H-MM

Question 95. Which Of The Following Is Not A Feature Of Myosin Molecule?

  1. Contractile Nature
  2. ATPase Like Action
  3. Formation Of Cross Bridge With Active Site Present In The Actin
  4. All Of The Above.

Answer: 4. All Of Above.

Question 96. Intercostal Muscles Are Found In :

  1. Digits
  2. Pectoral Girdle
  3. Pelvic Girdle
  4. Thoracic Ribs.

Answer: 4. Thoracic Ribs.

Question 97. If A Solution Of Actin Is Mixed With A Solution Of Myosin The Resulting Mixture Becomes Very Viscous. If Atp Is And Atp Is Hydrolysed To Adp And Inorganic Phosphate. The Mixture Regains Viscosity Tfttl The Atp Is Hydrolysed. These Observations Suggest That:

  1. Actin And Myosin Bind Together.
  2. The Complex Of Actin And Myosin (Actomyosin) In An ATPase
  3. Atp Seems To Alter The Binding Between Actin And Myosin
  4. All Of The Above.

Answer: 4. All Of Above.

Question 98. One Of The Following Is A Wrong Match.

  1. Cardiac Muscles – Maximum Atp, Mitochondria And Intercalated Disc Characteristic
  2. Striated – Syncytial
  3. Cardiac – Lack of Autonomic Nerve Supply
  4. Sifiooth – Controlled By the Autonomic Nervous System  Mainly.

Answer: 3. Cardiac – Lack Autonomic Nerve Supply

Question 99. Origin Of Muscular System In Vertebrates Is :

  1. Ectoderm
  2. Endoderm
  3. Mesoderm
  4. Both 1 And 2.

Answer:  3. Mesoderm

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