Evolution of brain is called cephalization. Worms are found to have the simplest brain mechanism and have simple straight forward nervous system i-e head to tail.
Neural Mechanisms refer to structures such as neurons (nerve cells), neural circuits and regions of the brain plus substances such as neurotransmitters and hormones. These regulate behaviour, voluntary and involuntary systems.
A cat is an animal.
Wind, water, animal, and mechanical
Yes, cerebral blood flow is regulated by intrinsic autoregulatory mechanisms in the brain. These mechanisms ensure a relatively constant blood supply to meet the brain's metabolic demands, even when there are fluctuations in systemic blood pressure. Autoregulation helps to maintain stable oxygen and glucose delivery to the brain, supporting its constant function.
The Animal with the largest brain is the Sperm Whale (Cachalot) (Physeter Macrocephalus)
Wind, water, animal, and mechanical
They are, indeed, the most simplest multi-cellular marine animal
W. Penfield has written: 'Speech and brain-mechanisms'
In addition to pain receptors in the brain, other mechanisms that can cause headaches include changes in blood flow, chemical imbalances, muscle tension, and nerve irritation.
yes.
starfish
Jellyfish