Tag: science & technology

The lachrymal glands (also called lacrimal glands) are responsible for producing tears that lubricate and protect the eyes. These are located above each eye. The pituitary is the master gland, thyroid regulates metabolism, and pancreas produces insulin and digestive enzymes.

The pituitary gland is called the 'master gland' because it produces hormones that control other endocrine glands and regulates various bodily functions including growth, metabolism, and reproduction. It is located at the base of the brain. The thyroid regulates metabolism, pancreas produces insulin, and spleen is part of the immune system.

Malaria primarily affects the spleen as it filters out malaria-infected red blood cells, causing the spleen to enlarge (splenomegaly). The Plasmodium parasite infects and destroys red blood cells, which are then trapped by the spleen. Malaria does not directly target the heart, lungs, or kidneys as its primary organ.

The human body has three types of muscle tissue: skeletal (voluntary muscles attached to bones), smooth (involuntary muscles in organs and blood vessels), and cardiac (the heart muscle). Each has distinct structural and functional characteristics.

Blue eyes result from low melanin concentration in the iris. Less pigment allows light to scatter and reflect, creating the blue appearance. Brown eyes have more melanin, which absorbs light.

Alcohol is a diuretic that causes significant dehydration. The brain temporarily shrinks as it loses water, pulling away from the skull and causing the painful hangover headache. The brain doesn't actually swell.

Bones are classified into four types by shape: long bones (femur, humerus), short bones (carpals, tarsals), flat bones (skull, sternum), and irregular bones (vertebrae, pelvis). This classification is based on shape, not function.

The mandible (lower jawbone) is the largest and strongest facial bone. It must withstand the significant forces generated during chewing and biting. The maxillae are paired upper jaw bones, and the frontal bone forms the forehead.

This is TRUE. Regular horse riding can stimulate bone formation in the pelvis and femur due to repeated mechanical stress. This is Wolff's Law - bones remodel and strengthen in response to the forces placed on them.