NEET Practice Questions (MCQs) with Answers & Solutions

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Which chemical is responsible to make skeleton muscle fatigue?

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Explanation

Lactic acid is produced during intense exercise when oxygen levels are low, leading to anaerobic respiration in muscles. This accumulation of lactic acid causes a decrease in pH within the muscle cells, leading to the sensation of muscle fatigue.

In which muscle amount of myoglobin is high?

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Explanation

Red muscles, also known as slow-twitch muscles, have a high myoglobin content. Myoglobin is a protein that binds oxygen, allowing red muscles to sustain prolonged aerobic activities.

Which muscle is known as an aerobic muscle?

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Explanation

Red muscles are referred to as aerobic muscles because they have a high capacity for aerobic metabolism. They contain many mitochondria and a high concentration of myoglobin, allowing them to generate energy through aerobic respiration efficiently.

The study of skeleton system is called as......

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Explanation

The study of the skeletal system is called osteology. The term 'osteology' is derived from the Greek words 'osteon' meaning bone and 'logos' meaning study. This field focuses on the structure, function, and diseases of bones.

How many bones are present in the structure of skeleton system of human?

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Explanation

The human skeletal system consists of 206 bones. This count includes all the bones in the adult human body, accounting for the axial skeleton (skull, vertebral column, and rib cage) and the appendicular skeleton (limbs and girdles).

How many bone are present in each middle ear of human?

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Explanation

Each middle ear of a human contains 3 bones: the malleus, incus, and stapes. These bones are collectively known as the auditory ossicles and are responsible for transmitting sound vibrations from the eardrum to the inner ear.

How many vertebrae are present in the structure of vertebral column of human?

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Which flat bone is present in the middle line of thorax region of human?

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Explanation

The sternum, also known as the breastbone, is a flat bone located in the center of the thorax (chest) region. It connects to the ribs via cartilage and forms the front part of the rib cage, helping to protect vital organs such as the heart and lungs.

How many pairs of ribs are found in human?

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Explanation

Humans have 12 pairs of ribs, making a total of 24 ribs. These ribs form the rib cage, which protects vital organs like the heart and lungs. The first seven pairs are known as true ribs, the next three pairs are false ribs, and the last two pairs are floating ribs.

Which are floating rib in human?

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Explanation

The human rib cage consists of 12 pairs of ribs. The last two pairs (11th and 12th) are called floating ribs because they are not attached to the sternum at all. They are only attached to the vertebrae at the back.

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