Human Biology and Anatomy Quiz

The femur, or thigh bone, is the longest, heaviest, and strongest bone in the human body, extending from the hip to the knee.

Human blood is slightly basic, with a normal pH range of approximately 7.35 to 7.45, making 7.4 the correct representative value.

Hemoglobin is an iron-containing oxygen-transport metalloprotein in the red blood cells of almost all vertebrates. Each subunit contains a heme group with an iron atom at its center.

Although banana plants can grow very tall and are often mistaken for trees, they are technically giant herbaceous plants (herbs) because they lack a true woody trunk.

Speaking is a complex motor task that requires the coordinated effort of about 70 different muscles, including those in the face, tongue, larynx, and respiratory system.

The inner ear contains the semicircular canals and vestibule, which detect head movement and position, playing a critical role in maintaining balance and equilibrium.

Mitosis is the process of cell division by which a single cell divides into two genetically identical daughter cells, maintaining the chromosome number.

'On the Origin of Species', published in 1859, was written by Charles Darwin and introduced the scientific theory of evolution by natural selection.

O-negative (O-) blood is known as the universal donor type because its red blood cells lack A, B, and Rh antigens, meaning it can be transfused to patients of any blood type without triggering an immune reaction.

Scurvy is a disease resulting from a lack of Vitamin C (ascorbic acid), which is essential for the synthesis of collagen in humans.

The human heart has four valves: the tricuspid valve, the pulmonary valve, the mitral (or bicuspid) valve, and the aortic valve, which ensure one-way blood flow through the heart.

An adult human skeleton consists of 206 bones, whereas infants are born with around 270 bones, some of which fuse together as they grow.

Vitamin D is synthesized in the skin when it is exposed to ultraviolet B (UVB) radiation from sunlight, which is why it is often called the 'sunshine vitamin.'

The stapes (misspelled here as 'Staples') is a stirrup-shaped bone in the middle ear and is the smallest and lightest bone in the human body.

Diabetes mellitus is a metabolic disease characterized by high blood sugar levels, resulting from a deficiency in the production or action of the hormone insulin, which is secreted by the pancreas.