Explanation

• Approximately 7–8% of an adult’s body weight
• Approximately 8–9% of a child’s body weight
• Approximately 9–10% of an infant’s body weight

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Blood is a body fluid present in animals that consists of plasma, white blood cells, red blood cells, and platelets.

humans have around 5 liters of blood in their bodies.

The volume of blood is approximately 5.5 liters in each adult male and 4.5 liters in female.

Explanation

• High levels of cholesterol can lead to the buildup of plaques in the arteries.
• It causing atherosclerosis, which is a primary factor in heart attacks.

Explanation

• In the periodic table, a rows is considered to be a periods.
• Periods are the horizontal rows of elements in the periodic table.

Explanation

The hertz is the unit of frequency of one cycle per second. 

 symbol: hertz (Hz)

Hertz in honor of the German physicist Heinrich Hertz

hertz in the International System of Units (SI)

frequency is defined as one cycle per second

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Explanation

• A sphygmomanometer is a medical device used to measure blood pressure.
• It consists of an inflatable cuff and a pressure gauge.

Explanation

• Veins are the blood vessels that carry blood from other parts of the body back to the heart.
• They have one-way valves that prevent blood from flowing backwards and ensure it keeps moving towards the heart.

Explanation

We can measure our blood pressure on our own using a digital blood pressure monitor for automated readings or an instrument called a sphygmomanometer for manual readings.

A sphygmomanometer also known as a blood pressure monitor,  is a device used to measure blood pressure.

Explanation

• Most of our nutrient absorption takes place in the small intestine.
• Where specialized enzymes and absorptive cells (enterocytes) break down.
• It absorb nutrients from food into the bloodstream.

Explanation

When white light passes through a prism, it splits into 7 colors, forming a spectrum known as a rainbow:

1. Red
2. Orange
3. Yellow
4. Green
5. Blue
6. Indigo
7. Violet

The separation of visible light into its different colours is known as dispersion.

Explanation

• ECG (Electrocardiogram) is a test used to measure the electrical activity of the heart.

It is commonly used for the diagnosis of heart-related ailments, such as:

• Arrhythmias (irregular heart rhythms)
• Coronary artery disease
• Cardiac arrests
• Heart failure