The Brain and Cranial Nerves
One of the most complex and fascinating things in the human body is the brain. The body is “capable of almost everything, but it would not be possible, without the brain receiving information, and analyzing the information.”
The brain is aware of its surroundings, via input from the spinal cord and cranial nerves. Cranial nerves with sensory functions allow us to smell and see. Nerves with both motor and sensory functions are responsible for everything from tasting and chewing, to breathing and the heating of your heart. Many of the little things we take for granted are also made possible by cranial nerves.
Solving problems, feeling hungry, laughing. Each of these activities occurs in a different region of the brain. The portion of the central nervous system is contained in the cranium. About one hundred billion neurons and ten to fifty trillion neuralgia make up the brain. In adults, the brain has a mass of about three pounds.
The four major parts of the brain are the Brain Stem, Cerebellum, Diencephalons, and the Cerebrum.
The brain stem is continuous with the Spinal Cord and consists of the Meclulla Oblongata, Pons, and the Mid Brain.
Posterior to the Brain Stem is the Cerebellum. Superior to the Brain Stem is the Diencephalon. The Diencephalons consists mainly of the Thalamus and Hypothalamus.
Supported on the Diencephalon of the Brain Stem, the Cerebrum which is the largest part of the brain.
Since the brain does not store oxygen, it needs a constant flow to prevent it shutting down.
Blood flows to the brain mainly via, the internal Caroticl and Vertebral Arteries. The internal Tugular Veins return blood from the head to the heart.
In adults, the brain is only two percent of the total body weight, but it consumes about two percent of the oxygen and glucose used at rest.
When activity of neurons and neuralgia increases in a region of the brain, blood flow to that area also increases. Even a brief slowing of brain blood flow may cause unconsciousness.
Typically an inter...
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... parts of the external surface of the thypanic member and the pharynx.
The special sensory provides task sensation from the epiglottic region.
Cranial Nerve XI – the Accessory Nerve. The accessory nerve has a cranial root and a spinal root, both of which consist of branchial motor fibers.
The Branchial motor cranial root supplies muscles of the larynx and pharynx.
The Branchial motor spinal root supplies the trapezius and sternoclerclomastoid muscles, helping to move the head.
Cranial Nerve XII – The Hypoglossal Nerve. This nerve has two components. The sensory portion controls muscles in the tongue. The somatic motor is responsible for supplying muscles in the tongue to help with speech and swallowing.
As you can tell from reading this report, this information just scratches the surface of how in depth and complex we are. I hope you now have a better understanding of the brain and the twelve cranial nerves, as well as, an understanding of all the things we take for granted.
Although the brain only weighs about three pounds, it is a very powerful and essential organ in the body (Brain Structures and Their Functions). The cerebrum, cerebellum, and the brain stem are the three main parts of the brain. The cerebrum fills up most of the skull, its main functions are for remembering, problem solving, thinking, and feeling (Bellamy 23). It also controls movement throughout the body. The cerebellum is located towards the back of the head. It controls mostly just coordination and balance (Brain Structures and Their Functions). The brain stem is underneath the cerebrum and in front of your cerebellum. It attaches the brain to the spinal cord and controls functions like breathing, digestion, heart rate and blood pressure (Carter 12). The brain is also divided into halves. The left side of the brain controls the right side of the body, while the right side of the brain, controls the left side of the body (Bellamy 17).
Another locate area referred to the brain stem that has inside pons, medulla, and celebellum. Pituitary gland was attached to our braine. Cingulate Gyrus, Lateral ventrice, fornix, septum pellucidum, cerebral acqueduct. and tegmentum are part we can see in the dissection of sheep braine.
cortex, the thinking part of the brain, id dead. The brain stem, the part of the
A person cannot live without a brain stem. A person 's heartbeat, blood pressure and breathings all originate from the brain stem. The parts of the brain that make up the brain stem are the mid brain, pons and the medulla. The mid brain, which is also known as the mesencephalon are comprised of the tegmentum and the tectum. These parts regulate body movement, vision and hearing. The pon 's portion of the brain stem is in the hind brain and it connects the cerebellum to assist with posture and other body movements. The pon 's also gives a person a level of consciousness necessary for sleeping. The last section might be the most important piece. The medulla is the section of the brain stem that maintains the vital body functions such as a person 's heart rate and breathing.
Separating the brain into the three main parts gives a much better idea as to how the brain functions. These three parts are the cerebral cortex, the brain stem and the cerebellum. The brain stem is the terminal from the brain to the body. This is where the brain will receive information from the body and then send out signals back to the body to tell it the correct response. When it comes to everyday reaction and natural bodily functions, the cerebral cortex will kick in, made up of pretty much all “grey matter.” The cerebral cortex is the hub for most of your reactions and memories. The cerebellum is mainly responsible for regulating the levels in the body, organizing the information and memories the brain receives and it also controls with the “thought process.”(brains and interactions, NP BBCsci.)
Almost all animals have a nervous system. Neurons bundle together to form nerves. The purpose of the nervous system is to coordinate all activities of the body, and enables the body to respond and adapt to changes both inside and outside. The central nervous and the peripheral nervous systems are very similar but different at the same time. The CNS is made up of the brain and spinal cord and functions mainly to process information and determine the appropriate responses. The central nervous system receives sensory information, figures out a response, and initiates a motor response if appropriate. The CNS is protected by the skull, vertebral column, and a membrane. The spinal cord provides communication between the brain and the peripheral nerves
The brain has many different parts to it which help one function through daily life; parts such as the cerebrum which controls voluntary movement and regulates functions such as thinking, speaking and the ability to recall information. The cerebellum controls the balance and coordination and finally the brain stem, which consists of the medulla oblongata and the spinal cord which controls all involuntary functions such as breathing, heart rate and blood pressure. The brain stem is also able to carry out these actions even when someone is asleep. To fully understand how crucial the brain is to survival one must understand the functions of the brain stem.
The brain has many different parts to it which help one function through daily life; parts such as the cerebrum which controls voluntary movement and regulates functions such as thinking, speaking and the ability to recall information. The cerebellum controls the balance and coordination and finally the brain stem, which consists of the medulla oblongata and the spinal cord which controls all involuntary functions such as breathing, heart rate and blood pressure. The brain stem is also able to carry out these actions even when someone is asleep. To fully understand how crucial the brain is to survival one must understand the functions of the brain stem.
Purpose- To identify the functions of the cranial nerve of the peripheral nervous system such as the olfactory, optic, oculomotor, trochlear, trigeminal, abducens, facial, vestibulocochlear, glossopharyngeal, vagus, accessory, and the hypoglossal nerves. I will examine these functions with a series of behavior tests on my partner who is Jazmine Cooley to see if all nerves are functioning properly and if they are not, then this will be considered an identified dysfunction of a cranial nerve which is a diagnosis.
The brain is one of the most interesting yet the most complex part of the body. Since no one can really see what’s inside, it’s a big question for most people on how it works. The brain is made up of more than 100 billion neurons that communicate through the synapse. It controls all the function of the body, receive and interprets information and process thoughts and emotions (Hines, 2016). It is one of the most important part of the body. How we remember, how we think, do and etc. is made possible because of the brain. The brain is divided into three main parts: cerebellum, cerebrum and brainstem. Each part has its own specialised area on the body in order to function well (Hines, 2016).
In the conclusion, many people opinion would disagree say the heart was the most important part of the body. They didn’t know the only way the heart will working is by the brain, and the neurons are sending signals. Our body are like light switch your turn back on and off, plus you could even restart your body. In other cases, the brain is the most tangled part of the human body. It is the center of alertness and also rules all voluntary and involuntary movement and bodily functions. It can communicates with each part of the body throughout the nervous system, is a network of channels that carry electrochemical signals.
The cerebrum consists of two hemispheres, separated by a deep fissure called the Corpus Callosum, the hemispheres are divided into four lobes; the frontal, partials, occipital and temporal.
The Central NS is broken down by two parts the brain and the spinal cord. The brain is protected by the scull and has a mushroom like shape. The bain has four main parts: the brain stem, cerebrum, cerebellum, and the diencephalon. The brain I the main organ
The brain and spinal cord make up the central nervous system. The brain doesn't just control your organs, but also can think and remember. That part of the brain is called the mind.
Central nervous system: MedlinePlus Medical Encyclopedia. (n.d.). U.S National Library of Medicine. Retrieved May 22, 2014, from http://www.nlm.nih.gov/medlineplus/ency/article/002311.htm