Locomotion and Movement - Online Test
Q1. Sachin suffers from hypoparathyroidism. This can lead him to :
Answer : Option A
Explaination / Solution:
Hypoparathryrodism is the condition in which body secretes abnormally low level of parathyroid hormone. This deficiency may lead to hypocalcemia and tetany.
Q2. Which disorder is caused due to wild contractions in muscles?
Answer : Option C
Explaination / Solution:
Tetany is caused due to rapid spasms (wild contractions) in muscle due to low Ca++ inbody fluid.
Q3.
During vigorous exercise :
i. lactic acid accumulates in muscle cells to meet its energy needs immediately.
ii. lactic acid is formed by anaerobic respiration hence oxygen consumption by muscles is reduced.
iii. This reduction in oxygen consumption is called oxygen debt of muscle.
Answer : Option D
Explaination / Solution:
During vigorous exercise, lactic acid accumulates in muscles cells to meet the energy requirement of muscle cell. Lactic acid is formed due to insufficient availability of oxygen.
Q4. Myasthenia gravis leads to fatigue and weakness. It is not :
Answer : Option B
Explaination / Solution:
Myasthenia gravis is an auto immune disorder affecting neuromuscular junction leading to fatigue, weakening and paralysis of skeletal muscle.
Q5.
A 5 year old girl Sita and her grandmother, together met an accident. Her grandmother got her leg fractured but Sita didn’t suffer from any fractures :
i. At young age bones are more flexible and contain lots of organic matter.
ii. Sita’s has a more powerful immune system than her grandmother.
iii. In old people bones become hard and brittle.
Answer : Option B
Explaination / Solution:
Generally bones are flexible at young age and become hard and brittle at old age.
