Tag: science & technology

Oncology is the branch of medicine that deals with the study and treatment of cancer. Ornithology studies birds, mammalogy studies mammals, and pedology studies soil.

Exobiology or astrobiology is the study of potential life beyond Earth. The prefix 'exo-' means 'outside' or 'external'.

Numismatics is the study of coins and currency, including their history and artistic design. This field focuses specifically on money rather than numbers (mathematics), stamps (philately), or space (astronomy).

Ornithology is the branch of zoology that studies birds, including their behavior, physiology, and classification. It is distinct from osteology (study of bones) or osmology (study of smells).

Normal human body temperature is 36.9°C (98.6°F), which is the standard baseline for human health. Option C (98.6°C) incorrectly uses the Fahrenheit numerical value but labels it as Celsius.

Vitamin K is essential for blood clotting as it helps produce clotting factors in the liver. Unlike B1, B2, or D, which have different roles (energy metabolism, skin health, calcium absorption), K directly enables coagulation.

A normal adult human has 5-6 liters of blood, which is approximately 7% of body weight. This volume supports oxygen transport and circulation; higher ranges (8-12L) would exceed normal physiological limits.

Red blood cells are formed in the bone marrow through erythropoiesis. This process occurs primarily in the spongy bone tissue of flat bones like the sternum, pelvis, and ribs, not in the liver, kidneys, or heart.

An adult human has 206 bones, compared to approximately 300 at birth. The reduction occurs because many bones fuse during growth and development, particularly in the skull and spine.

The pancreas secretes insulin, a hormone that regulates blood glucose levels. This is distinct from bile juice (produced by liver) or peptic juice (produced by stomach), highlighting the pancreas's unique endocrine function.