Each of these hemispheres contains four major lobes. The three most important parts of the brain are the frontal lobe, parietal lobe, and the temporal lobe. The first major lobe in the brain is the frontal lobe. The frontal lobe is the largest part of the brain. This lobe has a major contribution that deals with a person’s emotions, thoughts, and even their personality.
The midbrain consists of the tectum and tegmentum. The hindbrain is made of the cerebellum, pons, and medulla. Often the midbrain, pons, and medulla are referred to together as the brainstem. The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action. The cerebral cortex is divided into four sections which called lobes.
Human sensory perception is facilitated by a number of extremely complex systems that are responsible for relaying sensory information to the brain. Two such systems are the visual system and the auditory system. The human visual system can be broken down into three major components: the retina, the visual pathway, and the visual cortex.197 Each of these three components house complex systems within themselves comprised of many small, yet significant, parts that work together to allow the processing of visual information. In order to understand visual processing, one must begin with the retina. The retina is a layered network of cells whose nuclei are grouped into three different sections.
“Protected within the skull, the brain is composed of mostly of the cerebrum, cerebellum, and brainstem.” (“Anatomy of the Brain, mayfieldclinic.com”) The cerebrum is the biggest part in the human brain, and is divided into lobes including the frontal lobe, parietal lobe, occipital lobe, and temporal lobe. Each lobe has its own tasks. For example, “the frontal lobe is associated with reasoning, planning, parts of speech, movement, emotions, and problem solving, the parietal lobe is associated with movement,
The Limbic System The brain is a very complicated organ consisting of two halves known as hemispheres. There is a left hemisphere, which controls the right side of the body, and a right hemisphere which controls the left side of the body. Another way that the brain is classified in is lobes. There are four lobes that the brain consists of, the frontal lobe, the parietal lobe, the occipital lobe, and the temporal lobe. Most of the action that happens in the brain that is related to sleep is in the hypothalamus, which is located in the Limbic System next to the temporal lobe.
The diencephalon, alongside the cerebrum make up the two major divisions of the forebrain. The main structures of the diencephalon include the hypothalamus, thalamus, epithalamus (including the pineal gland), and also the subthalamus. Moreover, located within the diencephalon is found the third ventricle, which is one of the four brain ventricles or cavities filled with cerebrospinal fluid. The function of the diencephalon is to relay sensory information between brain regions and control many autonomic functions of the peripheral nervous system. Furthermore, it connects structures of the endocrine system with the nervous system and works in together with limbic system structures so as to generate and manage emotions and memories.
The auditory cortex is part of the temporal lobe at each side of the brain. It analyzes information from music such as volume, pitch, and speed. The cerebrum is the largest part of the brain and is located at the front and top of the head. There are four parts of the cerebrum; the inferior frontal gyrus, the dorsolateral frontal cortex, the frontal gyrus, and the motor cortex. Each of the four parts, in their own way, help recall the memory of the song and it’s lyrics.
TAQ 1: a) b) The mammalian nervous system is split into two. The central nervous system consists of the brain and the spinal cord, which coordinates and controls the movement and activities of the body and the peripheral nervous system, made up of the somatic and autonomic system, which forms the connections between the organs and the central nervous system. The brain and the spinal cord work together to aid the coordination of the body. The brain can be divided into three main regions: the forebrain, midbrain and hindbrain. The forebrain interprets sensory information, thought processes and memory and it also monitors the composition of the blood and temperature on the body.
1.Spinal cord - is a long, and tubular shaped structure that contains nervous tissue and cells located at the end of the brainstem and continues down to the bottom of the vertebral column. It used to connect the peripheral nervous system and the brain. It acts as sensory system and transmitted message to the brain. 2.Conus medullaris - is a tapered structure that located in the most distal part of the spinal cord and end with filum terminale. 3.Cauda equina - It makes of spinal nerves and spinal nerve root that located near the first lumbar vertebra of spinal cord.
The vertical meridian representation of the two hemiﬁelds is joined via a large ﬁber system called the corpus callosum. From the optic chiasm there are two separate pathways that lead to the brain. The smaller one goes to the superior colliculus, a nucleus in the brainstem, which then projects to the thalamic pulvinar nucleus. The larger pathway goes through the lateral geniculate nucleus (LGN) of the thalamus and to the occipital cortex or primary visual cortex.
The nervous system has many significant functions such as direction of your movements, focusing of the eyes, pain sensory, contraction of the muscles allowing your heart to pump sending blood and oxygen to all your vital organs and removing harmful toxins. Your brain is the control centre of the body. The most largest and complex part of the brain is the cerebrum, the centre of learning. This controls the way you use language, feel emotions and think. It is divided into two sides which are connected together by nerve bundles called the corpus callosum.
The pons are a part of the metencephalon in the hindbrain. The medulla oblongata is located between the pons and spinal cord. This structure is responsible for basic vital life functions such as breathing, heartbeat, and blood pressure. The midbrain is involved in functions such as vision, hearing, eye movement, and body movement. The pons are involved in motor control and sensory analysis.
The PNS contains somatic nervous system and the autonomic nervous system. The autonomic nervous system controls the function of internal organs like your heart, stomach, cardiac muscle, and your glands. The autonomic nervous system has an effect on the organs, muscles, and glands are all done voluntary. The autonomic nervous system can change the body temperture, send extra blood to a particular area, slow your heartbeat, and pull the stomach secretion. The somatic nervous system is made up of sensory organs and nerves that connects to the skin, also that connects to all the skeleton muscles.
One system of the brain is commonly referred to as the “old brain”. This inner core layer of the brain keeps the body’s basic functions running smoothly. Another system is the limbic system, which includes the amygdala, hypothalamus, and hippocampus. These structures are responsible for memory, motivation, emotion, and learning. The largest part of the brain is the
He says that the outer surface of the brain which is called neocortex is responsible for the reading process. It is divided into four lobes and each lobe has a certain function during the reading process. These four lobes are: the frontal lobe at the front of the head, the occipital lobe at the back of the head, the temporal lobe on the side, and the parietal lobe on the top. While you are reading this now your occipital cortex is active, it is dealing with all the visual information such as the words and the sounds. The frontal lobe of your neocortex is handling with meaning of the text and working to relate what you are reading with your prior knowledge.