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New research sheds light on what goes on inside people’s heads as they make decisions to obtain information about the future. Moderate/severe and penetrating traumatic brain injury (TBI) are associated with an increased risk for subsequent development of brain cancer, according to a study published online Feb. 15 in JAMA Network Open.
Inside the brain es una iniciativa de la Asociación Americana del Alzheimer, según la cual se pretende informar sobre los principios básicos del funcionamiento del cerebro, describir las partes del mismo, y analizar las principales consecuencias que la enfermedad de Alzheimer provoca en él.
- What Is The Brain?
- What Is The Brain Made of?
- How Does The Brain Work?
- Lobes of The Brain and What They Control
- Deeper Structures Within The Brain
- Blood Supply to The Brain
- Cranial Nerves
The brain is a complex organ that controls thought, memory, emotion, touch, motor skills, vision, breathing, temperature, hunger and every process that regulates our body. Together, the brain and spinal cord that extends from it make up the central nervous system, or CNS.
Weighing about 3 pounds in the average adult, the brain is about 60% fat. The remaining 40% is a combination of water, protein, carbohydrates and salts. The brain itself is a not a muscle. It contains blood vessels and nerves, including neurons and glial cells.
The brain sends and receives chemical and electrical signals throughout the body. Different signals control different processes, and your brain interprets each. Some make you feel tired, for example, while others make you feel pain. Some messages are kept within the brain, while others are relayed through the spine and across the body’s vast networ...
Each brain hemisphere (parts of the cerebrum) has four sections, called lobes: frontal, parietal, temporal and occipital. Each lobe controls specific functions. 1. Frontal lobe.The largest lobe of the brain, located in the front of the head, the frontal lobe is involved in personality characteristics, decision-making and movement. Recognition of sm...
Pituitary Gland
Sometimes called the “master gland,” the pituitary gland is a pea-sized structure found deep in the brain behind the bridge of the nose. The pituitary gland governs the function of other glands in the body, regulating the flow of hormones from the thyroid, adrenals, ovaries and testicles. It receives chemical signals from the hypothalamus through its stalk and blood supply.
Hypothalamus
The hypothalamus is located above the pituitary gland and sends it chemical messages that control its function. It regulates body temperature, synchronizes sleep patterns, controls hunger and thirst and also plays a role in some aspects of memory and emotion.
Amygdala
Small, almond-shaped structures, an amygdala is located under each half (hemisphere) of the brain. Included in the limbic system, the amygdalae regulate emotion and memory and are associated with the brain’s reward system, stress, and the “fight or flight” response when someone perceives a threat.
Two sets of blood vessels supply blood and oxygen to the brain: the vertebral arteries and the carotid arteries. The external carotid arteries extend up the sides of your neck, and are where you can feel your pulse when you touch the area with your fingertips. The internal carotid arteries branch into the skull and circulate blood to the front part...
Inside the cranium (the dome of the skull), there are 12 nerves, called cranial nerves: 1. Cranial nerve 1: The first is the olfactory nerve, which allows for your sense of smell. 2. Cranial nerve 2: The optic nervegoverns eyesight. 3. Cranial nerve 3: The oculomotor nervecontrols pupil response and other motions of the eye, and branches out from t...
5 de jul. de 2021 · Anatomy. Cerebrum. Cerebellum. Brainstem. Healthy brain. Summary. The brain connects to the spine and is part of the central nervous system (CNS). The various parts of the brain are...
30 de jul. de 2020 · The brain is one of the most complex and magnificent organs in the human body. Our brain gives us awareness of ourselves and of our environment, processing a constant stream of sensory data. It controls our muscle movements, the secretions of our glands, and even our breathing and internal temperature.
The brain directs our body’s internal functions. It also integrates sensory impulses and information to form perceptions, thoughts, and memories. The brain gives us self-awareness and the ability to speak and move in the world. Its four major regions make this possible: The cerebrum, with its cerebral cortex, gives us conscious control of our ...
The forebrain is the largest and most highly developed part of the human brain: it consists primarily of the cerebrum and the structures hidden beneath it (see "The Inner Brain"). When people see pictures of the brain it is usually the cerebrum that they notice.
