Locomotion and movement practice · Medium

Select the correct match.

Choose the correct statements for flagellar movements

Gout happens due to accumulation of is joints

Find the odd one out from the following

In Paramecium, cilia helps in

The contractile protein of skeletal muscle involving ATPase activity as

Skeletal muscles are closely associated with the …A… components of the body. They have …B… appearance under the microscope and hence are called …C… muscles
Choose the correct options to fill A, B and C, so as to complete the given NCERT statement

Muscle fatigue is due to

Statements about the mechanism of muscle contraction are given below.
I. Acetylcholine is released when the neural signal reaches the motor end plate.
II. Muscle contraction is initiated by a signal sent by CNS via a sensory neuron.
III. During muscle contraction isotropic band gets elongated.
IV. Repeated activation of the muscles can lead to lactic acid accumulation.
Identify the correct statement.

Which of the following statements are wrong with reference to muscles?
I. Cardiac fibres are branched with one or more nuclei
II. Smooth muscles are unbranched and cylindrical
III. Striated muscles never performs anaerobic respiration
IV. Cardiae muscles are non-striated
Correct option with all wrong statements is-

Which muscle band remains unchanged during the contraction and relaxation of the skeletal muscle?

Select the wrong set of statements with respect to muscles
I. Z-line is present in the centre of the light band
II. Thin filaments are firmly attached to the M-line
III. The central part of the thick filaments, not overlapped by thin filaments is called Z-band
IV. Light band contains only thin filaments 

Identify a mismatch from the following regarding skeleton in an adult human being

What will happen if ligaments are cut or broken?

Muscle A and Muscle B are of the same size, but muscle A is capable of much finer control than Muscle B. Which one of the following is likely to be true for muscle A?

Joints are the point of contact between
I. bones II. Cartilages and bones
III. bones and muscles IV. cartilage and muscles
Select the containing correct articles

Muscles of alimentary canal are mainly

Assertion: Calcium is required for skeletal muscle contraction.

Reason: Calcium influx releases acetylcholine at neuromuscular junction.

Ligament is mainly made up of

For how long, contraction of the muscles continues in sliding filament theory?

The thick filaments in the ‘A’ band are held together in the middle of this band by a thin fibrous membrane called –

In humans which of the following are similar in one factor

Which of the following would you not expect to find in both a skeletal muscle cell and a cardiac muscle cell?

Statement I: Locomotory structures need not be different from those affecting other types of movements.

Statement II: Locomotory strucutres are chiefly used for locomotion. They are also used for food collection, change in body postures, etc.

Read the following statements w.r.t. muscle contraction and choose the option that states all the correct statements.
a. Actin and myosin filaments do not get short but rather slide passes each other
b. The size of A-band reduces c. Length of H-zone decreases

Low level of $C{a^{2 + }}$ ions in muscles result in

The region at the ends of the A-band of two adjoining sarcomeres is called

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

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

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

Reason: Movement is the significant feature of living organisms.