Brain
Neuron
Neurotransmitters
Eye
Photoreceptors
Retina
Heart
Myocardium
Lungs
Alveoli
Liver
Hepatocytes
Kidneys
Nephron
Glomerulus
Pancreas
Islets of Langerhans
Intesyines
Artery and arterial wall
Venous vessel
Venous Wall
Lymph node and vessels
Testes and Sperm
Uterus
Ovum