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