Question:

Myoglobin is present in

Updated On: Jul 6, 2022

all muscle fibres
white muscle fibres
red muscle fibres
both (b) & (c)

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The Correct Option is D

Solution and Explanation

Based upon the sarcoplasmic contents, situation of nuclei and number of formed elements, two types of fibres are recognised in striated muscles-white fibre and red fibre. White muscle fibres are fast muscle fibre which lack myoglobin and have fewer mitochondria. These muscles perform fast work for short duration as a result these muscle fibres get fatigued quickly. Eg.eye ball muscle,flight muscle of sparrow. Red muscle fibre are slow muscle fibre possessing red hemoprotein called myoglobin and abundant mitochondria. These muscles can perform slow sustained work over long period without getting fatigued. Eg. Extensor muscle at back and flight muscleinkites.

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Concepts Used:

Locomotion and Movement

Locomotion

The movement of a creature from one place to another is known as locomotion. During the process, there is the action of appendages such as wings, limbs, and flagella. In some animals, like fish, whales, and sharks, locomotion upshots from a wave-like series of muscle contractions. Locomotion helps an organism in finding their food, avoid harsh weather conditions, escape from their predators, etc.

Some examples of locomotion are walking, running, swimming, etc. Movement, on the other hand, refers to any type of motion that need not be localized.

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Movement

Movement is generally described as a state of changing the position from rest to motion or vice-versa. Movement can be both voluntary movement and involuntary movement. Movement helps an organism perform essential functions, such as pumping blood to the different parts of the body, etc.