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

The transparent lens in the human eye is held in its place by

Calcium is important in skeletal muscle contraction because it

Match the following columns and select the correct option.

Chronic autoimmune disorder affecting neuromuscular 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?

During muscular contraction which of the following events occur? $\newline$(a) ‘H’ zone disappears$\newline$(b) ‘A’ band widens$\newline$(c) ‘I’ band reduces in width$\newline$(d) Myosine hydrolyzes ATP, releasing the ADP and Pi$\newline$(e) Z-lines attached to actins are pulled inwards$\newline$Choose the correct answer from the options given below.

$\newline$Given below are two statements: $\newline$ $\newline$Assertion (A): Osteoporosis is characterized by decreased bone mass and increased chance of fractures. $\newline$Reason (R): A common cause of osteoporosis is increased levels of estrogen. $\newline$ $\newline$In the light of the above statements, choose the most appropriate answer from the options given below:

Given below are two statements: $\newline$Statement I: Ligaments are dense irregular tissue. $\newline$Statement II: Cartilage is dense regular tissue. $\newline$Choose the correct answer from the options given below:$$

Match List I with List II

Which of the following statements are correct regarding skeletal muscle? $\newline$A. Muscle bundles are held together by collagenous connective tissue layer called fascicle. $\newline$B. Sarcoplasmic reticulum of muscle fibre is a storehouse of calcium ions. $\newline$C. Striated appearance of skeletal muscle fibre is due to the distribution pattern of actin and myosin proteins. $\newline$D. M line is considered as the functional unit of contraction called sarcomere. $\newline$Choose the most appropriate answer from the options given below:$$

Which of the following are Autoimmune disorders? $\newline$ A. Myasthenia gravis $\newline$ B. Rheumatoid arthritis $\newline$ C. Gout $\newline$ D. Muscular dystrophy $\newline$ E. Systemic Lupus Erythematosus (SLE)