Lymph vessels carry lymph to the blood vessels, while lymph nodes are integral parts of the immune system.
This animation demonstrates the internal structure of the brain.
Glands of the endocrine system secrete hormones into the blood.
Scoliosis is a medical condition in which a person's spine has a lateral deviation.
Concave and convex lenses are used for the correction of shortsightedness and farsightedness.
Bones of the lower limbs are connected to the trunk by the pelvis.
The main parts of the human brain are the brain stem, the cerebellum, the diencephalon,...
The lesson presents the components of a healthy diet.
The topmost layer of our skin is the epidermis, which contains melanocytes.