Explanation

Calcium phosphate, specifically hydroxyapatite, is the main component of bones and teeth.

It is a calcium salt of phosphoric acid.

It is the primary mineral constituent of bone tissue, making up about 70-80% of bone dry weight.

Calcium phosphate gives bones and teeth their strength and rigidity.

Explanation

A sphygmomanometer is used to measure blood pressure and is typically applied to the upper arm.

The cuff inflates around the arm to measure systolic and diastolic blood pressure levels.

Explanation

The human body typically has 206 bones

At the time of birth, there are 270 bones which fuse with time to come to a total of 206 bones.

The total bones of our body can be divided into:

• the axial skeleton (80) 
• the appendicular skeleton (126)

The newborn child has 300 bones.

Longest bone: Femur (thigh bone)

Shortest: Stapes (one of the 3 small bones inside the ear)

The human head has 22 bones.

Explanation

Typhoid and Cholera are both waterborne diseases that can be caused by drinking contaminated water.

• Typhoid fever is a bacterial infection caused by Salmonella Typhi, which can be spread through contaminated food and water.
• Cholera is a diarrheal disease caused by Vibrio cholerae, which can be spread through contaminated food and water, as well as through person-to-person contact.

Explanation

Polio, or poliomyelitis, is a disabling and life-threatening disease caused by the poliovirus.

The virus spreads from person to person

and can infect a person's spinal cord, causing paralysis (can't move parts of the body).

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The Polio vaccine was invented by___?

 Jonas Salk

Which country launched a polio vaccine drive after 1988 in April 2022?

 Israel