NEET Zoology Locomotion And Movement Class 11 Questions

Sliding filament theory can be best explained as:

Which one of the following are the incorrect match

Cells of the human body exhibit three main types of movements, namely, amoeboid, ciliary and muscular. Which of the following given example correct for such movement? (i) Some specialised cells in our body like macrophages and leucocytes in blood exhibit amoeboid movement. (ii) Cytoskeletal elements like microfilaments are also involved in amoeboid movement. (iii) Muscular movement occurs in the trachea help us in removing dust particles and some of the foreign substances inhaled along with the atmospheric air. (iv) Passage of ova through the female reproductive tract is also facilitated by the ciliary movement. (v) Movement of our limbs, jaws, tongue, etc., require muscular movement. (vi) The contractile property of muscles is effectively used for locomotion and other movements by human beings and majority of multicellular organisms.

Select the correct statement regarding the specific disorder of muscular or skeletal system:

Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Osteoporosis is characterised by decreased bone mass and increased chance of fractures. Reason (R): Common cause of osteoporosis is increased levels of estrogen. In the light of the above statements, choose the most appropriate answer from the options given below :

Fill in the blank spaces and select option which contain true answer of blanks: (A) All mammals (except a few) have ________ 1 ________ cervical vertebra. (B) The number of phalanges in each limb of human is ________ 2 ________. (C) Thin filament of myofibril contains 2 'F' actions and two other proteins namely, ________ 3 ________ and ________ 4 ________. (D) In a muscle fibre Ca²⁺ is stored in ________ 5 ________.

Select the correct option :-

Between the atlas and axis, what type of movable joint is present?

The accumulation of uric acid crystals in the region of joints resulting in painful movement causes

What is the location of the ATPase of muscle?

The characteristic and an example of a synovial joint in humans is

From given characters about structure of contractile proteins myosin which option contain only true characters? (i) Each filament is made of two 'F' (filamentous) protein helically wound to each other. (ii) Many monomeric proteins called meromyosins constitute one thick filament. (iii) Two filaments of another protein, troponin also run close to the 'F' actins throughout its length. (iv) Each meromyosin has two important parts, a globular head with a short arm called the heavy meromyosin (HMM) and a tail, called the light meromyosin (LMM). (v) In the resting state a subunit of tropomyosin masks the active binding sites for myosin on the actin filaments. (vi) Each 'F' protein is a polymer of monomeric 'G' (Globular) protein. (vii) The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for thin filament.

Choose the correct statements regarding muscle contraction. A. A motor neuron carries a signal sent by the Central Nervous System (CNS) to the sarcolemma of the muscle fibre. B. The neural signal generates an action potential which causes the release of Ca⁺⁺ into sarcoplasm. C. Increase in Ca⁺⁺ inactivates the actin for breaking cross bridges. D. Actin binds to the myosin head to form a cross bridge. E. Shortening of sarcomere takes place, by pulling actin filaments towards the centre of 'A' band.

Which of the following statements are correct with reference to human endoskeleton? A. Human skull is monocondylic. B. The joint between any two adjoining vertebrae is a cartilaginous joint. C. In human beings, the number of cervical vertebrae is seven. D. All ribs except the last 2 pairs are bicephalic. E. The occipital bone of skull is articulated with atlas vertebra.

Match List I with List II related to muscular/skeletal system:

Which of the following are Autoimmune disorders? A. Myasthenia gravis B. Rheumatoid arthritis C. Gout D. Muscular dystrophy E. Systemic Lupus Erythematosus (SLE) Choose the most appropriate answer from the options given below :

Three types of muscles are given as a, b and c. Identify the correct matching pair along with their location in human body:

Match List I with List II:

Match List I with List II.

Which of the following statements are correct regarding skeletal muscle?

Which of the following is present between the adjacent bones of the vertebral column?

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Osteoporosis is characterised by decreased bone mass and increased chances of fractures. Reason (R): Common cause of osteoporosis is increased levels of estrogen. In the light of the above statements, choose the most appropriate answer from the options given below:

Which of the following is a correct match for disease and its symptoms?

Chronic auto immune disorder affecting neuro muscular junction leading to fatigue, weakening and paralysis of skeletal muscle is called as :

Which of the following statements wrongly represents the nature of smooth muscle ?

Match List - I with List - II.

During muscular contraction which of the following events occur?

Which of the following muscular disorders is inherited?

Calcium is important in skeletal muscle contraction because it

The pivot joint between atlas and axis is a type of

Glenoid cavity articulates

Sliding filament theory can be best explained as

Select the correct matching of the type of joint with the example in human skeletal system.

Select the correct statement with respect to disorders of muscles in humans: