Explanation

The medulla oblongata is part of the hindbrain and plays a key role in transmitting messages between the brain and the spinal cord.

It also controls essential functions such as breathing, heart rate, and blood pressure.

Explanation

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• Human sex chromosomes are known as X and Y, and their aggregate determines someone's intercourse. normally, human girls have  X chromosomes at the same time as adult males own an XY pairing.
• This XY sex-willpower device is determined in maximum mammals in addition to a few reptiles and flora

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Explanation

Bowman’s capsule is the part of the nephron where filtration of waste materials and excess water from the blood occurs.

The filtered fluid, called glomerular filtrate, then moves into the renal tubule for further processing.

Explanation

The pancreas secretes pancreatic juice, which contains enzymes like trypsin (for protein digestion) and amylase (for sugar digestion).

It helps in breaking down proteins into amino acids and sugars into simpler forms for absorption.

Explanation

Both senses detect chemicals—smell through the nose and taste through the tongue.

They work together to enhance flavor perception.

Explanation

Enzymes act as biological catalysts, speeding up chemical reactions in the body without being consumed in the process.

They are essential for various physiological processes, including digestion and metabolism.

Explanation

The primary function of the digestive system is to:

Ingest food: Food is taken into the body through the mouth.

Break down food: Mechanical and chemical processes break down food into smaller molecules that can be absorbed.

Absorb nutrients: The small intestine absorbs nutrients such as carbohydrates, proteins, fats, vitamins, and minerals into the bloodstream.

Eliminate waste: Undigested food and waste products are removed from the body through defecation.

Explanation

AB negative is the rarest of the eight main blood types

A universal donor has the blood group is "O"

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The rarest blood types are:

Explanation

About 40-50% of the body's weight is due to muscles.

Muscles are the largest component in terms of body mass after bones.

The remaining body weight is distributed between bones, skin, organs, and other tissues.

Explanation

The lachrymal gland, also known as the tear gland.

It is responsible for secreting tears in the human body.

It is located above the outer corner of each eye.

It helps keep the eyes moist and protected.