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- The cortex is roughly divided into four major lobes, which are named after the bones of the skull that surround each section of brain. The lobes are paired, meaning that the whole brain contains two of each, a left and a right. In general, the structures are roughly symmetrical.
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Nov 9, 2023 · The brain has three main parts: the cerebrum, cerebellum, and brainstem. Cerebrum. The cerebrum is the largest and most recognizable part of the brain. It consists of grey matter (the cerebral cortex ) and white matter at the center.
Feb 20, 2024 · The three main parts of the brain are the cerebrum, cerebellum, and brainstem, but these portions contain many key sections. The human brain is the epicenter of our nervous system and plays a pivotal role in virtually every aspect of our lives.
Sep 3, 2024 · There are three major brain divisions, with each performing specific functions. The major divisions of the brain are the forebrain (or prosencephalon), midbrain (mesencephalon), and hindbrain (rhombencephalon).
- Regina Bailey
- 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...
Oct 30, 2023 · Labeled brain diagram. First up, have a look at the labeled brain structures on the image below. Try to memorize the name and location of each structure, then proceed to test yourself with the blank brain diagram provided below.
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Nov 1, 2022 · The adult brain is divided into the cerebrum, diencephalon, cerebellum, and brainstem. Lateral and midsagittal views of the brain show the anatomical boundaries of these major brain divisions. Making up most (80-85%) of the brain are the right and left hemispheres of the cerebrum.
Sep 4, 2018 · The human brain is the main Central Nervous System organ, situated in the head, protected by the cranium. Human brain has the same overall construction and anatomy as other mammalian brains, but it has a more developed cerebral cortex. The human brain is particularly complex and extensive.
