ตระกร้าสินค้าว่างเปล่า
Eukaryotic cells with nuclei measuring only a few micrometres may contain nearly 2 metres of DNA, coiled multiple times.
Neurons are cells specialised for transmitting electric signals.
Systemic circulation carries oxygenated blood from the heart to the body, while pulmonary circulation carries oxygenated blood from the lungs to the heart.
The urinary system serves for the removal of harmful and useless materials from the body.
Bones of the lower limbs are connected to the trunk by the pelvic girdle.
The bones of the upper limbs form the pectoral girdle and the arms.
The two main parts of the central nervous system, the brain and the spinal cord are protected by the skull and the spinal column.
NAD⁺ is a coenzyme that plays an important role mainly in catabolic processes, while NADP is important in anabolic processes as hydrogen carriers.
A hollow digestive organ with a muscular wall, located between the oesophagus and the small intestine.
The reproductive system is a series of organs working together for the purpose of reproduction.
The reflex triggered by the stretching of the thigh extensor muscle is the patellar reflex.
Synovial joints can be categorised by the direction of movement they allow.
Surface epithelia cover the external and internal surfaces of the body.
The reproductive system consists of organs which work together for the purpose of reproduction.
Common ciliated eucaryotic unicellular organisms widespread in freshwaters.
