EASY
Earn 100

Rigor mortis (stiffness after death) occurs due to muscle contraction. However, it lasts for hours and then disappears. This is because
(a) channels in the sarcoplasmic reticulum are closed after hrs
(b)Contraction is an energy requiring process. since synthesis ceases after .death, contraction
also ceases
also ceases
(c)Proteolytic enzymes from lysosomes digest the cross linkages between myosin and actin
(d)All of the aboe

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Important Questions on Muscular and Skeletal System
MEDIUM
Match the following columns and select the correct option:-
Column-I | Column-II | ||
(a) | Gout | (i) | Decreased levels of estrogen |
(b) | Osteoporosis | (ii) | Low ions in the blood |
(c) | Tetany | (iii) | Accumulation of uric acid crystals |
(d) | Muscular dystrophy | (iv) | Autoimmune disorder |
(v) | Genetic disorder |

EASY
Chronic autoimmune disorder affecting neuromuscular junction leading to fatigue, weakening and paralysis of skeletal muscle is called as:

EASY
Match the following
List - I | List - II | ||
(a) | Uric acid crystals in joints | (i) | Arthritis |
(b) | Inflammation of joints | (ii) | Autoimmune disorder |
(c) | Myasthenia gravis | (iii) | Tetany |
(d) | Prolonged contraction of muscle | (iv) | Osteoporosis |
(v) | Gout |
The correct answer is

EASY
In emergency of severe seizures of tetany, magnesium and calcium should be given. Explain the reason.

EASY
Explain a condition called Myasthenia gravis.

MEDIUM
Consider the following statements each with one or two blanks.
(i) | Each pectoral girdle consists of a (A) and a (B) |
(ii) | (C) is a condition of rapid spasms (wild contractions) in muscle due to low in body fluid. |
(iii) | Each organized skeletal muscle in our body is made of a number of (D) held together by a common collagenous connective tissue layer called (E). |
Which one of the following options correctly fills the blanks in any two of the statements?

EASY
An autoimmune disease is

MEDIUM
How is tetany caused?

MEDIUM
Select the correct combination of statements regarding Myasthenia gravis
It is an auto immune disorder.
It causes insufficient acetylcholine binding that effects muscular contraction.
Antibodies are developed against acetylcholine.
Antibodies are developed against acetylcholine receptors.
It causes drooping of eyelids.

MEDIUM
Did you ever feel tickling in muscles?

HARD
You must have heard of Sachin Tendulkar suffering from 'tennis elbow', a cricketer suffering from a disorder named after another game. Can common people suffer from this disorder? Find out more information about this disorder.

HARD
Write about two disorders of muscular and skeletal system.

MEDIUM
Which tissue is afflicted by Myasthenia gravis? What is the underlying cause?

MEDIUM
Predict the effect of less concentration in extracellular fluid on bones.

MEDIUM
Represent the union of two sets by Venn diagram for each of the following.
is a prime number between and
is an odd number between and

MEDIUM
Muscular tetany can be caused by deficiency of

EASY
Lack of relaxation between successive stimuli in sustained muscle contraction is known as:-

MEDIUM
Correctly match column-I with column-II.
Column-I | Column-II |
(A) Tetany | (i) Autoimmune disorder |
(B) Osteoporosis | (ii) Progressive degeneration of skeletal muscle |
(C) Muscular dystrophy | (iii) Inflammation of joints |
(D) Arthritis | (iv) Rapid spasms in muscle |
(E) Myasthenia Gravis | (v) Bone mass decreased |

HARD
Why do muscles show spasms after rigorous contraction?

EASY
Cotyledons are also called-

