D fish as sponges don't exact have brains, hydra don't have brains and flatworms do not have brains.
Depression is the most common mental health diagnosis
<span>The
Factors that control the rate and depth of breathing is Voluntary cortical control,
thalamic control stretch receptors in the alveoli voluntary cortical control
temperature of alveolar air. Ventilation
perfusion coupling means that more blood flows past functional alveoli than
past non-functional alveoli.</span>
Bacterial flagella is used for locomotion
but euglenoid flagellate are protoctistas