human lungs and diaphragm with brain s shown here

medical anatomy cardiovascular nervous skeletal system muscular lungs diaphragm brain science human organ respiratory diagrams body health biology detail trachea alveoli bronchi bronchioles cerebrum cerebellum lobes gyri sulci cortex neurons synapse neurology parietal frontal temporal occipital medulla pons brainstem thalamus hypothalamus pituitary hippocampus amygdala diagram healthcare educational