Question

Lower part of the brain which contains the reflex centre

Answer 1

The brain is the most complex part of the body. It controls our movements, communication, decisions and emotions, as well as our organs. Neuroscientists from Duke University write that the human brain is composed of six basic parts: the medulla oblongata, the pons, the midbrain, the cerebellum, the diencephalon and the cerebrum.
Different brain parts often work together to control the body's actions. Large areas are devoted to complex functions, such as the ability to have thoughts and feelings, to express them using language and to store them in memory. Neuroscientists are still working on deciphering which parts of the brain work together to accomplish such functions.
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Medulla Oblongata

The medulla oblongata controls the lungs, the heart and blood pressure and contains reflex centers involved in vomiting, coughing, sneezing and swallowing.
Pons

"Pons" means "bridge" in Latin, and the pons functions as a bridge between different parts of the brain. It also controls sleep and consciousness, breathing, bladder control, hearing, equilibrium, taste, swallowing, eye movement and the secretion of saliva and tears.
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Midbrain

The midbrain, together with the pons and the medulla, builds the brainstem, and contains several parts. The tectum controls eye movement, auditory and visual reflexes and processing. The tegmentum controls reflexes. The cerebral peduncles influence voluntary motor functions. The Substantia negra produces dopamine, which controls many functions in the brain, including behavior, cognition, voluntary movement, sleep, mood, attention and learning