Animal and Human Physiology: Scientific Figures & Vector Diagrams

An alveolus is a air sac found in the bronchi of the lungs. The alveoli are surrounded by a capillary bed. The type I pneumocytes allow gas exchange, while the type II pneumocytes produce surfactant to prevent the collapse of the alveolus.

The gastrointestinal tract, also called the digestive tract, alimentary canal, or gut, is the system of organs within multicellular animals that takes in food, digests it to extract energy and nutrients, and expels the remaining waste.

Nephron, Diagram of the urine formation. The number inside tubular urin concentration in mOsm/l - when ADH acts

Hemoglobin is an allosteric heterotetrameric (α₂β₂) metalloprotein in red blood cells that transports oxygen from respiratory surfaces to peripheral tissues.

Diagram describing the phases of the human cardiac cycle. Vectorization of File:2027 Phases of the Cardiac Cycle.jpg. Created upon request.

The eukaryotic cytoskeleton is a dynamic filament lattice composed of actin microfilaments, microtubules, and intermediate filaments.

This image was provided to Wikimedia Commons as a contribution from an art & design school thanks to a collaboration between Serra i Abella and Amical Wikimedia .

This image was provided to Wikimedia Commons as a contribution from an art & design school thanks to a collaboration between Serra i Abella and Amical Wikimedia .

Drawing showing the relationship between villi and microvilli of the small intestine. The luminal surface of the enterocytes have microvilli (1 micrometer long) while the cell layer itself is folded to form villi (0.5-1.6 millimeters long) and crypts. Both serve to increase the total absorption surface of the intestine.

Comprehensive scientific illustration showing Hormons feedback - Sprzężenie zwrotne hormonow in molecular and cellular detail for biology scholars.

A diagram ، that shows the motor end plate with synaptic vesicles and mitochondria as well as the ACh receptors of the muscle cell.