Essay On Brainstem

Brainstem is a part of human brain connects the cerebrum with the spinal cord .it has many functions such as : it control autonomic functions of the peripheral nervous system that happen if the human wake up or sleepy ,control several important functions of the body through sending signals and messages from brain to the human body this functions like alertness ,blood pressure ,breathing ,digestion, swallowing , coughing, vomiting and heart rate. brainstem contain most of the cranial nerves (nerves exist inside the human brain and in other places in the body ,it help in the movement and sense)there are inside the brainstem from the third cranial nerve until the twelfth nerve. the brainstem consists of three main parts midbrain ,pons and medulla oblongata. the imbalance that injury brainstem cause partial

nucleus of Trigeminal nerve CN.V is consist of three parts : spinal trigeminal nucleus, main trigeminal nucleus ,mesencephalic trigeminal nucleus

Abducens nerve CN.VI is a motor nerve and reach the eye its function control movement only one muscle in the eye called Lateral Rectus muscle .

Facial nerve its function is control muscles of face expression and control taste of the tongue and inside the mouth .there exist some disease related to this part of pons paralysis of the facial nerve ,causes muscle weakness in one side of the face caused by a viral infection or medical error such as putting dental drug incorrectly .

Vestibulocochlear nerve is a sensory nerve its function is transfer the sound from the inner ear to the brain through transmit nerve signals from the cells that inside the ear to the brain .it consists of two parts : cochlear nerve that transmit information from hearing , vestibular nerve . when happen imbalance in this nerve causes that hearing loss, dizziness , loss of equilibrium .

medulla