Explanation

• Blood pressure readings use two numbers: systolic (top) and diastolic (bottom).
• An ideal normal reading is less than 120/80 mm Hg.
• Cardiac output: More blood pumped by the heart → higher BP.
• Blood volume: Increased blood volume → increased BP.

Last updated 25-07-2026 by NA

Explanation

• Germs are microorganisms that can cause disease.
• When germs enter a wound, they may cause an infection.
• Keeping germs out of wounds helps prevent infection.

Last updated 24-07-2026 by NA

Explanation

• The Aorta is the largest artery in the human body.
• It carries oxygen-rich blood from the left ventricle of the heart to the rest of the body.
• It is the main artery of the systemic circulatory system.
• The aorta branches into smaller arteries to supply blood to all body organs except the lungs.

Additional information:

• Arterioles are the smallest branches of arteries.
• They carry oxygenated blood from arteries to the capillaries.
• Arterioles regulate blood flow and blood pressure by constricting or dilating.

Last verified on 21-07-2026

Explanation

• First Polio Vaccine Introduced: 1955
• Developer: Dr. Jonas Salk
• Type: Inactivated Polio Vaccine (IPV)
• Oral Polio Vaccine (OPV): 1961
• Developer of OPV: Dr. Albert Sabin

Last verified on 20-07-2026

Explanation

• Malaria is caused by the parasite Plasmodium.
• It is transmitted to humans through the bite of an infected female Anopheles mosquito.
• Malaria is a parasitic disease.
• It mainly affects the liver and red blood cells.
• Common symptoms include fever, chills, headache, and sweating.

Last verified on 11-07-2026