Locomotion and movement practice · Mixed difficulty

Which of the following is not the feature of red muscle fibres?

How many features given below in box are present in skeletal muscles?
Voluntary, Uninucleate, Attached to bones, Striations, Intercalated discs.

Select the correct statements
I. During muscle contraction, chemical energy changes into mechanical energy
II. Muscle fatitue occurs due to lactic acid formation
III. The reaction time is different to different muscle
IV. Muscle contraction don’t need ATP
Choose the option with the correct statements

Human adult vertebral formula is -

Select the option which contains only the incorrect statements w.r.t sliding filament theory of muscle contraction.

a. Acto-myosin cross bridge breaks as a new ATP binds to the myosin head

b. Binding of ${Ca}^{++}$to troponin results in masking of myosin binding site on actin

c. A-bands get reduced during shortening of the sarcomere

d. Actin filaments slide past myosin filaments

Rapid spasms in muscle due to hypocalcemia leads to

Which of the following is important for muscle contraction and nerve impulse transmission?

Deltoid (shoulder) muscle functions as a/an

Assertion: All locomotions are movements but all movements are not locomotion.

Reason: Movement is the significant feature of living organisms.

Why is the sternum known to be bicephalic?

Assertion: Amoeba shows simple form of movement
Reason: Streaming of protoplasm is found in amoeba

Assertion (A): Red muscles fibres depend on anaerobic process for energy
Reason (R): Red muscles fibres have more number of mitochondria in them

Microfilaments are involved in movement of

Three of the following pairs of the disorder of muscular or skeletal system are correctly matched with their respective description. Select the non-matching pair.

Striped muscles are characterized by

Assertion: The locomotion of unicellular organisms and multicellular animals show similarities.

Reason: Ciliary, flagellar and amoeboid movements occur only in unicellular organisms.

Select the option that holds w.r.t. contraction of skeletal muscles.

ATPase of the muscle is located in

Total number of bones found in right upper limb is

Pick out the correct match.

Each of the following options has a pair of equal number of bones. Which one doesn't?

Actin and myosin filaments of muscles are also called

How many ear ossicles you have?

Select the correct statement with reference to muscle structure
I. Each myosin is a polymerized protein
II. Many meromyosin constitutes one thick filament (myosin)
III. Each meromyosin’s tail is called heavy meromyosin (HMM) and head is called light meromyosin (LMM)
IV. The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for actin
Choose the option with correct statements

Which of the following statements about the striated muscles is false?

I. Thick filaments in the 'A' band are also held together in the middle of this band by a thin fibrous membrane called 'M' line

II. In the centre of each 'I' band is an elastic fibre called 'Z' line which bisects it

III. The thin filaments are firmly attached to the 'Z' line

IV. This central part of thick filament, not overlapped by thin filaments is called the 'H'

Which of the following is a simple form of movement?

Which of the following joints is incorrectly matched between the given articulating bones w.r.t. humans?

Statement I: Prolonged activation of striated muscles lead to fatigue in all striated muscles.

Statement II: Prolonged activation causes accumulation of lactic acid in a striated muscle.

Assertion: The joint between atlas and axis is
an example of gliding joint.

Reason: Gliding joint allows movement primarily
in one plane.

Which of the following is an example of movement?