Abductor muscles is antagonist of
1.Adductor
2.Rotator
3.Flexor
4.Pronator
Cartilaginous joints
1.permit free movement
2.Are not found in symphysis
3.Are found in the bodies of vertebrae
4.All
Elbow joint is a type of which joint?
1.Planar joint
2.Condyloid Joint
3.Hinge joint
4.Ball and Socket joint
Hinge joints
1.are cartilaginous joints
2.Permit movements in multi direction
3.Not found in knee
4.None
In old age stiffness of joints is due to the
1.Decrease in synovial fluid
2.Hardening of bones
3.Decrease in Calcium
4.None
Joints between carpals are
1.Fibrous joints
2.Cartilaginous joints
3.Gliding joints
4.Planar joints
Locomotory organs in starfish are
1.Lungs
2.Appendages
3.Skin
4.Tube feet
The only movable bone in the skull is
1.Maxilla
2.Mandible
3.Frontal
4.Occipital
According to the sliding filament theroy
1.Actin ( thin filament ) moves on myosin ( thick filament
2.Myosin moves on actin
3.Both myosin amd actin moves each other
4.None of these
An individual sarcomere consists of
1.A stack of actin fibres
2.A stack of myosin units
3.Overlapping actin and myosin
4.None
Anaerobin work becomes painful due to accumulation of
1.Ca++ ions
2.Myosin
3.Lactic acid
4.Creatine phosphate
At rest when muscle is relaxed the thin filaments interdigiate with the thick filaments only
1.Outside A - band
2.Outside H - band
3.Inside A - band
4.Inside M - line
Contractile fibrils of muscle are called-
1.Neurofibrils
2.Yellow fibres
3.Red fibres
4.Myofibrils
Contractile unit the muscle is part of myofibril between
1.Z - line and I - band
2.Z- line and I - line
3.Z- line and A - band
4.A - bond and I - band
Coronary process is a part of
1.cranium
2.heart
3.upper jaw
4.lower jaw
During resting stage the binding site of action for myosin remains masked by
1.HMM
2.Troponin
3.LLM
4.None
Each fasciculus of skeleetal muscle fibre is surrounded by
1.Epimycium
2.Perimycium
3.Endomycium
4.Sarclemma
Foramen magnum and occipital condyles are found in
1.Occipital bone
2.Incus bone
3.Parital bone
4.Squamosal bone
Functional unit of a muscle fibre is
1.Thick filament
2.Sarcomere
3.Thin filament
4.Myofibrils
Heart muscles are
1.Branched
2.Not fatigued
3.Striated and involuntary
4.All
In a contracted skeletal muscle fibre
1.M line disappears
2.H- zone elongates
3.I - band remains constant
4.A- band disappears
Light bands contain actin and are called-
1.A-bands of isotropic
2.A-bands or Anistropic bands
3.I-bands or isotropic bands
4.I-bands of Anisotropic
Mark the correct statement?
1.All cells have mitochondria
2.All non striated muscles are involuntary
3.Cardiac muscles are not striated
4.Animal cell contains chloroplast
Mark the incorrect statement in the following
1.Microfilaments are involved in amoeboid
2.All movement lead to locomotion
3.Cilliary movement help in passage of ova
4.None of the above/ More than one of the above
Motor end plate is a
1.Neuromuscular junction
2.Plate of motor neuron
3.Dendron of motor neuron
4.Gradient of proton motive force
Muscle that bends one part over another is called
1.Overlaping
2.Contraction
3.Flexor
4.Abduction
Muscle that brings the limbs towards midline of body is known as
1.Abductor
2.Extensor
3.Adductor
4.Flexor
Myofibrils show alternate dark and light bands in
1.Cardia muscles
2.Striped muscle
3.Smooth muscles
4.a and b
One myosin filament in the myofibril of skeletal muscale fibre is surrounded by how many actin filaments
1.Two
2.Four
3.Six
4.Eight
One myosin filament in the myofibril of skeletal muscle fibres is surrounded by how actin filaments
1.6
2.9
3.6
4.5
Relaxation of muscle is due to
1.Pumping of ca++ into sacroplasmic cisternea
2.Prasense of ATP ml
3.Confirmational change in troponin and masking if actin filaments
4.All
Sarcomere is the area between
1.2 H-zones
2.2 M-lines
3.2 A-zones
4.2 Z-lines
Skeletal system consists of
1.Olny bones
2.Only cartilage
3.A framework of bones and a few cartilage
4.A framework of cartilage and a few bones
Streaming of cytoplasm is seen in
1.Amoeba
2.Leucocytes
3.Macrophages
4.All
Sutures present between various bones of skull are ___ joint ?
1.Planar
2.Cartilaginous
3.Saddle
4.Fibrous
The action potential that triggers a muscle contraction travels deep within the muscle cell by means of
1.Sarcoplasmic reticulum
2.Transverse tubules
3.Synapse
4.Motor and plates
The connective tissue on the outer surface of a bone is called as
1.Periosteum
2.pericardium
3.peritoneum
4.None
The constraction of muscle of shortest duration is seen in
1.Jaws
2.Eye lide
3.Heart
4.Intestine
The cross arm that forms the cross bridges during muscle contraction is formed by
1.HMM
2.Troponin
3.LLM
4.Both A and C
The energy for muscle contraction is most directly obtained from
1.ATP
2.Anaerobic respiration
3.Aerobic respiration
4.Phosphocreatine
The fascia surrounding a muscle is made up of-
1.Cartilage
2.Collagenous connective tissue
3.Adipose tissue
4.Blood vessels
The ion that must be present in adequate amount for binding of cross bridges with actin is
1.Ca ++
2.Na +
3.K+
4.Mg ++
The macrophages in human body exhibit
1.No movement
2.movement with blood
3.peristalsis movement
4.Amoeboid movement
The muscle band that remains unchanged during muscle of contraction and relaxation of the skeletal muscle is
1.I
2.A
3.H
4.Z- line
The muscle fatigue occurs due to accumulation of
1.CO2
2.Lactic period
3.Creatine phosphate
4.Myosin ATpase
The number of thick myofilaments surrounding single thin myofilament ( actin ) are
1.2
2.3
3.6
4.4
The region between the ends of the A-bands of 2 adjoining sarcomeres is called
1.The Z-bands
2.The I-bands
3.The T-tubule
4.The H-bands
The source of Ca++ for the muscle is
1.Sarcolemma
2.T-tubule
3.Sarcosome
4.Sarcoplasmic reticulum
Time taken by a singal muscle twitch is
1.1 second
2.0.1 second
3.10 seconds
4.2 seconds
Tropomysin is moved by which of following protiens
1.Calmodulin
2.Troponin
3.Actin
4.None
Type of movement shown by paramecium is
1.Amoeboid
2.Cillary
3.Flagellar
4.Muscular
What types of muscles are found in the reproductive system in human?
1. involuntary muscles
2.smooth muscles
3.voluntary muscles
4.both A and B
When a skeletal muscle shortens during contraction which of these statements is fales
1.The I - band shortens
2.The A - band shortens
3.The H - zone becomes narrow
4.The sarcomeres shorten
Which o the following statement about the skeletal muscles is correct?
1.They are striated muscles
2.They are voluntary muscles
3.They are primarily involved in locomotory actions
4.All
Which of the following can be taken as a character of skeletal muscle fibre
1.Excitability
2.Extensibility
3.Contractibility
4.All of these
Which of the following is not the feature of red muscle fibres
1.They have plenty of mitochondria
2.They have high content of Myoglobin
3.They have high amount of Sarcoplasmic reticulum
4.They are called aerobic muscles
Which of the following is the regulatory muscle protein having double chain structure
1.Troponin
2.Actin
3.Myosin
4.Tropomyosin
Which of the following statements is correct?
1.Locomotion is not a voluntary movement
2.Cytoplasmic streaming is caused by contracting microfilament
3.Cytoplasmic streaming helps in pseudopodia formation
4.B and C
which one the smallest one?
1.muscle fibres
2.myofibril
3.Actin
4.sarcomere
Z-line divides the myofibrils into-
1.Sarcomere
2.Microtubules
3.Sarcolemma
4.Sarcosome